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fix: preserve Claude Code usage across incomplete turns - #456
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The Deep Agents adapter summed usage_metadata from the AI messages that reached graph state through the updates stream. Three cases came out wrong: - Deep Agents adds SummarizationMiddleware to every agent and subagent. Its summary call returns only text, so the summary model's message and usage never enter graph state, and an invocation that summarized under-reported input, output and total tokens. - When the invocation raised, including GraphRecursionError, the adapter returned no messages, so usage was None even though model calls had finished. - A count was summed over the calls that reported it and returned as known. ChatOpenAI also turns an omitted Chat Completions count into 0 and derives a missing total, so a partial provider report came out as measured zeros. The adapter now records usage from LangChain's chat-model callbacks, which fire for every chat-model call that runs in the adapter process: the main agent, declarative subagents and summarization. Agent Protocol subagents run remotely and are not included. A new recorder is created for each invocation, so earlier turns are never counted again. It outlives an exception, so a failed invocation still reports the fields that every counted call reported. Each token count and the cost are known only when every counted call in the invocation reported them, and an explicit zero stays a known zero. A request the provider rejects with a 4xx status (other than 408) contributes no usage. A 5xx response, timeout, cancellation or unfinished call leaves the invocation's counts and cost unknown, because the provider may have done work without reporting usage. OpenAI SDK retries happen inside one LangChain call, so a 5xx the SDK retries to success is not visible to the recorder, and only the final response's reported usage counts. When a response carries OpenAI-shaped raw usage, the raw counts decide what was reported: an omitted count stays unknown, the provider's total is used when present, and a derived total counts only when input and output were both reported. The graph tests run the real Deep Agents graph and ChatOpenAI against a scripted Chat Completions endpoint for summarization, parallel task subagents, 400, 408, 503 and timeout failures, the recursion limit, partial reports and explicit zeros. Separate ChatOpenAI.with_retry tests cover 429 then success and 503 then success. The existing usage tests now produce their messages through a LangChain chat-model call so the callbacks fire. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
The Claude adapter copied Claude Code's input_tokens to the top-level usage without a cache flag. Anthropic's input_tokens excludes cache reads and cache writes, so a consumer of the top-level counters saw a small uncached count with nothing saying cache was left out. Harbor's top-level fallback treated it as unknown for the same reason. When Claude Code reports input, cache reads and cache writes, the top-level input is now their sum, cached input is the cache reads, and the include-cache flag is true. This matches the Codex adapter and the inclusive total consumers already derive from the detailed usage extension. The top-level usage has no cache-write field, so reporting uncached input with the flag false would leave cache writes out of any total built from it. The three top-level input fields are reported together only when every count is valid and their sum fits in 64 bits; otherwise all three stay unknown, following the detailed extension's rule. The detailed extension is unchanged. The mock Claude CLI can now return a configured result usage, so an end-to-end case checks the normalized fields for a result with cache reads and cache writes. The existing case keeps the default usage. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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WalkthroughThe change adds invocation-scoped usage accounting across Claude and DeepAgents. Shared contracts preserve unknown values, observations, gaps, model identity, and provider-reported cost. Core and the Python SDK expose normalized model usage and coverage summaries. Relay startup now uses a 30-second readiness deadline. ChangesUsage accounting
Priority: Estimated code review effort: 5 (Critical) | ~90 minutes Merge Risk:
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| Check name | Status | Explanation | Resolution |
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| Docstring Coverage |  |
Docstring coverage is 19.23% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 312 functions across 44 files. | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Title check The title follows Conventional Commits format, uses the allowed lowercase type fix, states the main Claude usage change, and is 55 characters without a trailing period.Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Description check The pull request description is complete and follows the repository template. It includes an overview, reviewer starting point, validation details, related-issue section using the required action keyw… Full details: Description check
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Fern docs preview: https://nvidia-preview-pull-request-456.docs.buildwithfern.com/nemo/fabric |
LangChain carries cache reads per model call in usage_metadata.input_token_details.cache_read, and OpenAI raw usage carries them in prompt_tokens_details.cached_tokens, but the adapter never reported cached_input_tokens. Sum cached input per call with the same rule as the other counts: one call without a cache count leaves the sum unknown, and a reported 0 stays 0. Raw OpenAI usage is read first because ChatOpenAI renames the cache key for priority and flex service tiers. Report input_tokens_include_cache=True whenever input tokens are known. LangChain's UsageMetadata.input_tokens counts every input token type; langchain-anthropic adds cache reads and writes back into it, and OpenAI's prompt_tokens already includes cached tokens. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
The adapter drops a model call that the provider rejects with a 4xx status other than 408, because the provider spent no tokens on it. When every call was rejected, or no call started, the call list was empty and the usage was reported as unknown, although the invocation provably spent no tokens. The adapter now reports 0 for every token count and the cost in that case. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Deep Agents routes a subagent spec with graph_id to its async subagent middleware, which starts and updates tasks on a remote Agent Protocol server. Those model calls never reach the adapter's callbacks, so the reported counts left them out while appearing complete. The adapter blocked such subagents only when a tools policy was configured. When the configured subagents include one with graph_id, the adapter now reports the invocation's token counts and cost as unknown. The local sums stay in output.usage. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
The usage notes said that after a 5xx response, timeout, or cancelled call the provider may have done work. The reason the counts stay unknown is narrower: the provider may have billed the call without reporting usage. The README, the recorder docstring, and a test comment now say that. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Apply ruff format to the check added in the previous commit. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
…gent The adapter reports 0 when its callbacks observed no billed model call. That 0 holds for the invocation only when every model call runs through those callbacks. Deep Agents runs declarative subagents and summarization inside the graph, where the run config's callbacks reach them, but an Agent Protocol subagent (graph_id) runs on a remote server that the callbacks never see. The adapter already reports unknown usage for a runtime with such a subagent; this test pins that for an invocation whose only observed call was rejected, and the docstring and README state the condition. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
mnajafian-nv
marked this pull request as draft
October 20, 2026 19:53
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Separate complete invocation totals from available observations and preserve accounting gaps. Add the first collector in Deep Agents. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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Inline comments:
Review comments at @adapter-contract/typescript/src/usage.ts:
- Around line 61-62: Replace the naive reduce in the cost_usd aggregation with
an exact summation method that matches Python math.fsum for finite values,
preserving the existing finite-value and range checks. Add a parity test using
inexact decimal costs, such as repeated 0.1 values, to verify the resulting
cost_usd matches Python.
Review comments at @adapters/python/claude/README.md:
- Line 142: Update the product references in the README prose, including
“Fabric’s shared accounting code” and “Fabric can separately estimate cost,” to
use “NeMo Fabric.” Preserve the existing package identifier and other uses of
“Fabric” that do not refer to the product.
Review comments at @docs/adapter-contract/tutorials/results.md:
- Line 111: Change the “2. Separate Failure Classes” heading in the “To
Normalize Results and Telemetry” section to level three so it remains a step
alongside steps 1, 3, and 4; leave the “Invocation accounting evidence”
subsection unchanged.
Review comments at @docs/integrations/harness/claude.mdx:
- Around line 193-198: Update the product references in the usage-accounting
documentation so standalone “Fabric” becomes “NeMo Fabric,” including the
references to shared accounting code and runtime behavior. Preserve the existing
first-use “NVIDIA NeMo Fabric” wording.
- Around line 213-221: Update the Claude documentation to state that Fabric does
not currently populate model_usage.cost.estimated and catalog pricing is
unavailable; remove the claim that Fabric can estimate cost from model usage and
a price catalog. Keep the surrounding CLI-estimate and pricing-identity details
unchanged.
Review comments at @docs/sdk/python.mdx:
- Around line 1197-1199: Update the collection-scope statement to identify both
the Claude Code and bundled Deep Agents adapters as supplying
nemo_fabric.usage_accounting.v1 evidence, and remove the stray blank line
immediately after the statement.
Review comments at @schemas/SCHEMA.md:
- Around line 50-51: Update the Directory Layout tree to include the extensions
directory and its usage-accounting schema, matching the exported schema
represented by SchemaName::UsageAccounting.
Review comments at
@skills/nemo-fabric-integrate/references/sdk-api-inventory.md:
- Around line 95-96: Move the paragraph describing `summarize_usage` out from
before the Execution Model introduction and place it in a relevant API section,
such as a new Usage Summaries section after Stream Handles or beside
`inspect_adapter`; leave the Execution Model introduction and content focused on
that topic.
Review comments at @tests/adapters/test_deepagents_accounting.py:
- Around line 366-369: Update environment changes in make_runtime_fixture to use
the provided monkeypatch fixture for setting SCRIPTED_MODEL_KEY and removing
OPENAI_PROXY, so pytest restores the original environment after the fixture
runs.
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Enforce the product name in user-facing prose: use "NVIDIA NeMo Fabric" on first use and "NeMo Fabric" thereafter.
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docs/reference/api/rust-library-reference/nemo-fabric-core/runtime/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxadapters/python/codex/README.mddocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/python-library-reference/nemo_fabric.capabilities.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-gapreason.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/adapter-contract/tutorials/results.mddocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxskills/nemo-fabric-integrate/references/sdk-api-inventory.mdadapters/python/common/README.mdschemas/SCHEMA.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-costamount.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxskills/nemo-fabric-integrate/references/results-and-errors.mddocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxskills/nemo-fabric-build-adapter/SKILL.mddocs/reference/api/python-library-reference/index.mddocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.mdxadapters/python/deepagents/README.mddocs/reference/api/python-library-reference/nemo_fabric.accounting.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/integrations/harness/claude.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxadapters/python/claude/README.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/python-library-reference/nemo_fabric.types.md
Review adapter and example changes for command correctness, config/schema consistency, artifact handling, and compatibility with the public NeMo Fabric contracts.
⚙️ CodeRabbit configuration file
Files:
adapters/python/codex/README.mdexamples/openshell/run-demo.shadapters/python/common/README.mdadapters/python/deepagents/deepagents.fabric-adapter.jsonadapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.pyadapters/python/deepagents/README.mdadapters/python/claude/claude.fabric-adapter.jsonadapters/python/claude/src/nemo_fabric_adapters/claude/adapter.pyadapters/python/claude/README.mdadapters/python/claude/src/nemo_fabric_adapters/claude/usage.pyadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/adapter.pyexamples/harbor/swebench/adapters/claude/claude.fabric-adapter.jsonadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/usage.py
Do not flag SKILL.md files for missing SPDX headers.
⚙️ CodeRabbit configuration file
Files:
skills/nemo-fabric-build-adapter/SKILL.md
Schemas are generated public contract snapshots.
⚙️ CodeRabbit configuration file
Files:
schemas/SCHEMA.mdschemas/sdk/run-result.schema.jsonschemas/extensions/usage-accounting.schema.json
Tests should cover the behavior promised by the changed API surface, including error paths, lifecycle cleanup, and SDK/native parity where relevant.
⚙️ CodeRabbit configuration file
Files:
tests/_utils/utils.pytests/fixtures/usage_accounting/reducer-cases.jsontests/python/conftest.pytests/adapters/test_deepagents_usage_descriptor.pytests/adapters/test_adapaters_common_utils.pytests/fixtures/usage_accounting/conformance.jsontests/scripts/test_openshell_launcher.pytests/adapters/test_adapters_common_relay_gateway.pytests/docs/test_python_api_docs.pytests/fixtures/claude/usage-evidence.jsontests/adapters/test_deepagents.pytests/adapters/test_claude_usage.pytests/python/test_model_usage.pytests/fixtures/claude/mock-claude-cli.pytests/adapters/test_deepagents_accounting.pytests/python/test_usage_reducer_parity.pytests/e2e/test_claude.pytests/adapters/test_claude_adapter.py
Source excerpt: Treat all files under `docs/reference/api/` as generated output.
📄 CodeRabbit inference engine (.agents/skills/review-doc-style/SKILL.md)
Files:
docs/reference/api/rust-library-reference/nemo-fabric-core/runtime/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/python-library-reference/nemo_fabric.capabilities.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-gapreason.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-costamount.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/python-library-reference/index.mddocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.mdxdocs/reference/api/python-library-reference/nemo_fabric.accounting.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/python-library-reference/nemo_fabric.types.md
Source excerpt: In MDX files, top-of-file comments must use JSX comment delimiters: `{/*` to open and `*/}` to close.
📄 CodeRabbit inference engine (.agents/skills/contribute-docs/SKILL.md)
Files:
docs/reference/api/rust-library-reference/nemo-fabric-core/runtime/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-gapreason.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-costamount.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/integrations/harness/claude.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdx
Source excerpt: Treat these as blocking issues: MDX top-of-file SPDX comments use HTML comment delimiters instead of `{/* ...
📄 CodeRabbit inference engine (.agents/skills/review-doc-style/SKILL.md)
Files:
docs/reference/api/rust-library-reference/nemo-fabric-core/runtime/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-gapreason.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-costamount.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/integrations/harness/claude.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdx
Source excerpt: For links between files under `docs/`, use paths relative to the source file and include the target file's `.mdx` extension.
📄 CodeRabbit inference engine (.agents/skills/review-doc-style/SKILL.md)
Files:
docs/reference/api/rust-library-reference/nemo-fabric-core/runtime/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/index.ymldocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/python-library-reference/nemo_fabric.capabilities.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-gapreason.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/adapter-contract/tutorials/results.mddocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-costamount.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/python-library-reference/index.mddocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.mdxdocs/reference/api/python-library-reference/nemo_fabric.accounting.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/integrations/harness/claude.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/python-library-reference/nemo_fabric.types.md
Applicability reference: AGENTS.md: # AGENTS.md NeMo Fabric ships two tiers of agent skills.
📄 CodeRabbit inference engine (skills/README.md)
Files:
skills/nemo-fabric-integrate/references/sdk-api-inventory.mdskills/nemo-fabric-integrate/references/results-and-errors.mdskills/nemo-fabric-build-adapter/SKILL.md.agents/skills/contribute-adapter/SKILL.md
Applicability reference: AGENTS.md: # AGENTS.md Keep public bindings current when the API changes: `docs/sdk/python.mdx` for the Python SDK; `adapter-contract/python/` and `adapter-contract/typescript/` for the southbound...
📄 CodeRabbit inference engine (schemas/SCHEMA.md)
Files:
schemas/sdk/run-result.schema.jsonschemas/extensions/usage-accounting.schema.json
Source excerpt: Keep `adapter-contract/typescript/package.json` and the root package entries in its `package-lock.json` aligned with the Cargo SemVer release version.
📄 CodeRabbit inference engine (.agents/skills/update-project-version/SKILL.md)
Files:
adapter-contract/typescript/package.json
Source excerpt: [ ] Relevant adapter or example `README.md` files updated when examples or adapters have changed.
📄 CodeRabbit inference engine (.agents/skills/contribute-docs/SKILL.md)
Files:
adapters/python/codex/README.mdadapters/python/common/README.mdadapters/python/deepagents/README.mdadapters/python/claude/README.md
Source excerpt: [ ] Any Rust change ran `just test-rust` Source excerpt: [ ] Any Rust change ran `cargo fmt --all -- --check` Source excerpt: [ ] `crates/fabric-core` changes ran both the Rust and Python suites
📄 CodeRabbit inference engine (.agents/skills/prepare-pr/SKILL.md)
Files:
crates/fabric-core/src/schema.rscrates/fabric-core/src/runtime.rscrates/fabric-core/src/lib.rs
Applicability reference: AGENTS.md: # AGENTS.md Keep public bindings current when the API changes: `docs/sdk/python.mdx` for the Python SDK; `adapter-contract/python/` and `adapter-contract/typescript/` for the southbound adapter contract;...
📄 CodeRabbit inference engine (schemas/SCHEMA.md)
Files:
crates/fabric-core/src/schema.rsschemas/SCHEMA.md
Source excerpt: Follow these repository-specific requirements after applying the public skill: If the new adapter provides a coding harness, update `examples/harbor/swebench/` to support it.
📄 CodeRabbit inference engine (.agents/skills/contribute-adapter/SKILL.md)
Files:
examples/harbor/swebench/adapters/claude/claude.fabric-adapter.json
Source excerpt: [ ] `README.md` or `docs/index.yml` updated when entry points changed
📄 CodeRabbit inference engine (.agents/skills/contribute-docs/SKILL.md)
Files:
docs/index.yml
Source excerpt: Follow these repository-specific requirements after applying the public skill: Place a Python adapter under `adapters/python//` with `LICENSE -> ../../../LICENSE`, `README.md`, `.fabric-adapter.json`, Python pack...
📄 CodeRabbit inference engine (.agents/skills/contribute-adapter/SKILL.md)
Files:
adapters/python/codex/README.mdadapters/python/common/README.mdadapters/python/deepagents/deepagents.fabric-adapter.jsonadapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.pyadapters/python/deepagents/README.mdadapters/python/claude/claude.fabric-adapter.jsonadapters/python/claude/src/nemo_fabric_adapters/claude/adapter.pyadapters/python/claude/README.mdadapters/python/claude/src/nemo_fabric_adapters/claude/usage.pyadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/adapter.pyadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/usage.py
Applicability reference: AGENTS.md: # AGENTS.md NeMo Fabric ships two tiers of agent skills.
📄 CodeRabbit inference engine (skills/README.md)
Files:
skills/nemo-fabric-build-adapter/SKILL.md
Source excerpt: Inspect explicit Python versions and internal pins: `rg -n '^version =|nemo-fabric-[a-z-]+(?:\[[^]]+\])?
📄 CodeRabbit inference engine (.agents/skills/update-project-version/SKILL.md)
Files:
pyproject.toml
Source excerpt: Inspect the TypeScript package and lockfile root versions: `rg -n '"version":' adapter-contract/typescript/package{,-lock}.json`
📄 CodeRabbit inference engine (.agents/skills/update-project-version/SKILL.md)
Files:
adapter-contract/typescript/package.json
🧠 Learnings: 2
📚 Learning: 2026-07-24T16:07:22.255Z
Learnt from: AjayThorve
Repo: NVIDIA/NeMo-Fabric PR: 118
File: docs/reference/api/rust-library-reference/nemo-fabric-core/config/struct-adapterdescriptor.mdx:5-5
Timestamp: 2026-07-24T16:07:22.255Z
Learning: In this repo, files generated under `docs/reference/api/**` are NVIDIA NeMo Fabric API reference output. When reviewing changes to these generated pages, do not treat sidebar `position`/ordering updates as direct manual edits—these can be regenerated by running `just docs` after adding public types. Only flag substantive content changes that are not explained by generation.
Applied to files:
docs/reference/api/rust-library-reference/nemo-fabric-core/runtime/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdx
📚 Learning: 2026-08-07T07:15:59.993Z
Learnt from: AnuradhaKaruppiah
Repo: NVIDIA/NeMo-Fabric PR: 186
File: docs/adapter-contract/registration-and-discovery.md:103-104
Timestamp: 2026-08-07T07:15:59.993Z
Learning: Keep documentation files under docs/adapter-contract/ in portable Markdown (.md), not MDX. GitHub and the public authoring skill consume these files directly, and the NVIDIA NeMo Fabric documentation pipeline accepts them without conversion; do not flag the lack of MDX conversion for these files.
Applied to files:
docs/adapter-contract/tutorials/results.md
🪛 ast-grep (0.45.3)
tests/python/conftest.py
[info] 40-40: use jsonify instead of json.dumps for JSON output
Context: json.dumps(descriptor)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
adapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.py
[warning] 131-133: Request-controlled URL passed to urlopen; validate against an allowlist to prevent SSRF.
Context: urllib.request.urlopen(
health_url, timeout=min(1.0, remaining)
)
Note: [CWE-918] Server-Side Request Forgery (SSRF).
(urlopen-unsanitized-data)
tests/fixtures/claude/mock-claude-cli.py
[info] 40-40: use jsonify instead of json.dumps for JSON output
Context: json.dumps(message)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
scripts/contracts/generate_usage_accounting.py
[info] 39-39: use jsonify instead of json.dumps for JSON output
Context: json.dumps(extensions, indent=2)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
tests/adapters/test_deepagents_accounting.py
[info] 538-543: use jsonify instead of json.dumps for JSON output
Context: json.dumps(
{
"description": f"Echo {index}.",
"subagent_type": "general-purpose",
}
)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
[info] 619-619: use jsonify instead of json.dumps for JSON output
Context: json.dumps(chunk)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
[warning] 836-836: Do not make http calls without encryption
Context: "http://api.openai.com/v1"
Note: [CWE-319] Cleartext Transmission of Sensitive Information.
(requests-http)
tests/python/test_usage_reducer_parity.py
[error] 78-84: Command coming from incoming request
Context: subprocess.run(
[node, "--input-type=module", "-e", source, str(module)],
input=json.dumps(VECTORS),
capture_output=True,
text=True,
check=True,
)
Note: [CWE-78] Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
(subprocess-from-request)
[info] 80-80: use jsonify instead of json.dumps for JSON output
Context: json.dumps(VECTORS)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
tests/e2e/test_claude.py
[info] 424-424: use jsonify instead of json.dumps for JSON output
Context: json.dumps(turns)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
tests/adapters/test_claude_adapter.py
[info] 2093-2093: use jsonify instead of json.dumps for JSON output
Context: json.dumps([turn])
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
[warning] 2120-2120: Do not make http calls without encryption
Context: "http://api.anthropic.com"
Note: [CWE-319] Cleartext Transmission of Sensitive Information.
(requests-http)
🪛 Clippy (1.99.0)
crates/fabric-core/src/runtime.rs
[warning] 2327-2327: redundant closure
(warning)
🪛 SkillSpector (2.12.0)
skills/nemo-fabric-build-adapter/SKILL.md
[warning] 1: [TR2] Shadow Command Trigger: Shadow Command Trigger: description clause 'ng adapter or target descriptors, mapping AgentConfig into an agent harness or custom-agent runtime, implementing start/invoke/stop, declaring schemas and capabilities, packaging discovery metadata, or assessing adapter conformance' conflicts with built-in command 'stop'
Remediation: Choose triggers that do not conflict with built-in commands or other skills. Prefix with a unique namespace if necessary.
(Trigger Abuse (TR2))
.agents/skills/contribute-adapter/SKILL.md
[warning] 10: [AS3] Skill Enumeration: Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
Remediation: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
(Agent Snooping (AS3))
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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Inline comments:
Review comments at @scripts/contracts/generate_usage_accounting.py:
- Line 25: Update synchronize() to scan the Harbor example adapter descriptor
family under examples/harbor/swebench, including claude.fabric-adapter.json, so
its usage-accounting declaration is synchronized with the existing descriptor
roots.
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📒 Files selected for processing: 11
adapter-contract/typescript/src/usage.tsadapter-contract/typescript/test/usage-reducer.test.jsadapters/python/common/README.mdadapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.pyadapters/python/deepagents/README.mddocs/reference/api/python-library-reference/nemo_fabric.types.mddocs/sdk/python.mdxscripts/contracts/generate_usage_accounting.pysdk/python/nemo-fabric-runtime/src/nemo_fabric/types.pytests/adapters/test_adapters_common_relay_gateway.pytests/python/test_model_usage.py
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📚 Code guidelines: 3
schemas/SCHEMA.md — auto-discovered
.agents/skills/review-doc-style/SKILL.md — configured
.agents/skills/contribute-docs/SKILL.md — configured
📓 Path-based instructions: 11
Review Python SDK changes for typed API consistency, import-time dependency neutrality, async/session behavior, and parity with the native extension.
⚙️ CodeRabbit configuration file
Files:
sdk/python/nemo-fabric-runtime/src/nemo_fabric/types.py
Review documentation for technical accuracy against the current API, command correctness, and consistency with generated schemas.
⚙️ CodeRabbit configuration file
Files:
docs/sdk/python.mdxdocs/reference/api/python-library-reference/nemo_fabric.types.md
Enforce the product name in user-facing prose: use "NVIDIA NeMo Fabric" on first use and "NeMo Fabric" thereafter.
⚙️ CodeRabbit configuration file
Files:
adapters/python/deepagents/README.mdadapters/python/common/README.mddocs/sdk/python.mdxdocs/reference/api/python-library-reference/nemo_fabric.types.md
Review adapter and example changes for command correctness, config/schema consistency, artifact handling, and compatibility with the public NeMo Fabric contracts.
⚙️ CodeRabbit configuration file
Files:
adapters/python/deepagents/README.mdadapters/python/common/README.mdadapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.py
Tests should cover the behavior promised by the changed API surface, including error paths, lifecycle cleanup, and SDK/native parity where relevant.
⚙️ CodeRabbit configuration file
Files:
tests/adapters/test_adapters_common_relay_gateway.pytests/python/test_model_usage.py
Applicability reference: AGENTS.md: # AGENTS.md Keep public bindings current when the API changes: `docs/sdk/python.mdx` for the Python SDK; `adapter-contract/python/` and `adapter-contract/typescript/` for the southbound adapter contract;...
📄 CodeRabbit inference engine (schemas/SCHEMA.md)
Files:
adapter-contract/typescript/test/usage-reducer.test.jsdocs/sdk/python.mdx
Source excerpt: Treat all files under `docs/reference/api/` as generated output.
📄 CodeRabbit inference engine (.agents/skills/review-doc-style/SKILL.md)
Files:
docs/reference/api/python-library-reference/nemo_fabric.types.md
Source excerpt: In MDX files, top-of-file comments must use JSX comment delimiters: `{/*` to open and `*/}` to close.
📄 CodeRabbit inference engine (.agents/skills/contribute-docs/SKILL.md)
Files:
docs/sdk/python.mdx
Source excerpt: Treat these as blocking issues: MDX top-of-file SPDX comments use HTML comment delimiters instead of `{/* ...
📄 CodeRabbit inference engine (.agents/skills/review-doc-style/SKILL.md)
Files:
docs/sdk/python.mdx
Source excerpt: For links between files under `docs/`, use paths relative to the source file and include the target file's `.mdx` extension.
📄 CodeRabbit inference engine (.agents/skills/review-doc-style/SKILL.md)
Files:
docs/sdk/python.mdxdocs/reference/api/python-library-reference/nemo_fabric.types.md
Source excerpt: [ ] Relevant adapter or example `README.md` files updated when examples or adapters have changed.
📄 CodeRabbit inference engine (.agents/skills/contribute-docs/SKILL.md)
Files:
adapters/python/deepagents/README.mdadapters/python/common/README.md
🪛 ast-grep (0.45.3)
tests/python/test_model_usage.py
[info] 496-496: use jsonify instead of json.dumps for JSON output
Context: json.dumps(rates)
Note: [CWE-116] Improper Encoding or Escaping of Output.
(use-jsonify)
🔇 Additional comments: 11
adapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.py: 1
135-139: LGTM!adapter-contract/typescript/src/usage.ts: 1
147-152: LGTM!adapter-contract/typescript/test/usage-reducer.test.js: 1
50-56: LGTM!docs/reference/api/python-library-reference/nemo_fabric.types.md: 1
2090-2096: LGTM!Also applies to: 2512-2518
sdk/python/nemo-fabric-runtime/src/nemo_fabric/types.py: 1
2541-2545: LGTM!Also applies to: 2584-2584, 2815-2819
tests/adapters/test_adapters_common_relay_gateway.py: 1
242-253: LGTM!tests/python/test_model_usage.py: 1
489-489: LGTM!Also applies to: 495-499, 501-516, 518-537
adapters/python/common/README.md: 2
129-132: LGTM!
136-139: LGTM!adapters/python/deepagents/README.md: 1
244-249: LGTM!Also applies to: 251-267, 269-275, 277-281
docs/sdk/python.mdx: 1
1158-1158: LGTM!Also applies to: 1195-1229, 1231-1242
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Use the system Bash path so macOS tests exercise Bash 3.2 even when PATH contains a newer Bash. This keeps the empty-array regression meaningful in CI. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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Overview
Claude Code's terminal usage can fill missing fields with zero or represent cumulative process usage. After a crash, a substitute result can therefore look like measured zero spend.
Read partial-message usage before that information is lost. Retain available counts for each invocation and distinguish complete accounting from observations left by crashes, compaction or child work.
Dependencies: #442 supplies the shared accounting contract and normalizer. The diff against
mainincludes unmerged prerequisites.Details
Track message IDs, final output updates and the query that owns each report. Send the observations through shared accounting in #442. Keep terminal usage and process-wide
modelUsageas diagnostics rather than using them to fill missing normalized counts. Raw stream fragments are not added to public events.A failed terminal result can retain complete stream counts. A substitute crash result retains observations without certifying a complete total. Verified refusals before a model query establish zero model work. Actual child dispatch, compaction and reported retries leave gaps when the stream cannot establish coverage; merely enabling delegation does not create a gap.
An explicit injected user echo excludes that turn's frames without clearing earlier owned calls or retry gaps. Wait for the invocation's own terminal result. Late child messages and injected turns cannot transfer usage into a later invocation.
Claude Code's CLI cost is an estimate, so it is not reported as provider cost. Retain the diagnostic estimate only while its cumulative baseline remains valid. Shared catalog pricing requires independently established model identity and a matching rate.
Validation
The TypeScript adapter checks remain blocked by the shared dependency audit tracked in #484.
Regression tests cover streamed usage updates, reported zero versus omission, failed completed turns, crashes, retries and child messages. The focused usage module passes, including injected-turn regressions. Runtime and mock-CLI cases check that interrupted work retains observations and cannot move token counts or CLI estimates into another invocation.
Where should the reviewer start?
Start with
adapters/python/claude/src/nemo_fabric_adapters/claude/usage.pyand the adapter query loop. Reviewtests/adapters/test_claude_usage.pyfor omitted fields, crashes, compaction, child work and query ownership.Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)
Relates to: none
I confirm this contribution is my own work, or I have the right to submit it under this project's license.
I searched existing issues and open pull requests, and this does not duplicate existing work.