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fix: preserve Cline token usage per invocation - #446
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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>
Cline results put cache read and cache write counts in adapter-private usage extension keys. Consumers reading the standard usage fields saw no cache use and could not tell whether input_tokens included cache, so Harbor accounting recorded every Cline run's input as unknown. Cline counts input as the AI SDK does, with cache reads and writes included, and its output count includes reasoning. Report cache reads as cached_input_tokens, and set input_tokens_include_cache to true when the input count is known. Emit the nemo_fabric.detailed_token_usage.v1 usage extension whenever any counter is known: it repeats those counts, adds cache writes as cache_write_input_tokens, and sets output_tokens_include_reasoning to true. Keep each positive counter on its own, so cache counts survive a response that omits the input total. The descriptor declares that extension instead of the private keys, which no repository consumer reads. Treat a count of 0 as unknown, because Cline turns both a reported 0 and an omitted count into 0 and returns all zeros for an aborted interactive turn. Treat an input total below the sum of its reported cache counts as unknown, because Cline's input includes cache reads and writes, so such a total is inconsistent. Stop reporting cost_usd, because Cline falls back to a catalog-price estimate when the provider reports no cost. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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WalkthroughThis pull request adds invocation-level usage accounting across adapter contracts, Cline, DeepAgents, Fabric Core, and the Python SDK. It also bounds Relay gateway readiness at 30 seconds and guards empty OpenShell environment arrays. ChangesInvocation usage accounting
Operational updates
Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~100 minutes Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation | Resolution |
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| Docstring Coverage |  |
Docstring coverage is 20.88% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 249 functions across 46 files. (1 skipped… | 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 with the allowed lowercase type fix, a concise imperative summary, 46 characters, and no trailing period. It accurately describes the Cline per-invocati…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, detailed scope, validation coverage, reviewer starting points, a related-issues entry using the r… Full details: Title check
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Explanation
The title follows Conventional Commits format with the allowed lowercase type
fix, a concise imperative summary, 46 characters, and no trailing period. It accurately describes the Cline per-invocation token usage change.
Full details: Description check
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Explanation
The pull request description is complete and follows the repository template. It includes an overview, detailed scope, validation coverage, reviewer starting points, a related-issues entry using the required keyword, and both confirmation checkboxes.
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Full details: Docstring Coverage
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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Fern docs preview: https://nvidia-preview-pull-request-446.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>
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/python/src/nemo_fabric_adapter_contract/usage.py:
- Around line 81-82: Update the empty-record branch in usage_from_observations
and its TypeScript counterpart so empty coverage uses SCOPE_UNVERIFIED rather
than MISSING_USAGE, keeping both reducers in parity. Add a gaps assertion to the
empty_coverage fixture that verifies this reason.
Review comments at @adapters/typescript/cline/README.md:
- Line 94: Update the two product references in the Cline documentation—“each
Fabric invocation” and “Fabric core normalizes totals”—to use “NeMo Fabric”;
apply the same wording to the matching phrases in the integration documentation.
Review comments at @adapters/typescript/cline/src/usage.ts:
- Line 86: Update the completed() method so it removes the matching pending
entry before returning when the message has no id. Preserve setting
this.unverified and the existing id-present behavior, so finish() does not
classify a completed call as unfinished work.
- Around line 111-114: Update the delta calculation in finish so a missing
baseline field defaults to zero only when this.records is empty; when completed
records exist, leave the baseline undefined and calculate a delta only if the
baseline is numeric.
Review comments at @crates/fabric-core/src/runtime.rs:
- Around line 4373-4404: Add tests using local_host_plan for the undeclared and
schema-invalid modes, asserting each returns
FabricError::InvalidAdapterExtension and emits no model_usage_invalid event.
Test the partial mode to verify input_tokens is None, output_tokens remains
Some(5), and the input_tokens gap has reason unfinished_work. In the fake-host
result, use the existing os import and remove the leftover pricing_route output
field.
Review comments at @docs/integrations/harness/cline.mdx:
- Line 146: Update the product references in the Cline integration documentation
so “each Fabric invocation” reads “each NeMo Fabric invocation” and “Fabric
core” reads “NeMo Fabric core.”
Review comments at @scripts/contracts/generate_usage_accounting.py:
- Around line 22-25: Update the descriptor collection in synchronize to include
the packaged adapter assets under crates/fabric-cli/assets/adapters, so
generation and --check both keep the DeepAgents packaged descriptor in sync with
the canonical descriptor.
Review comments at
@skills/nemo-fabric-integrate/references/results-and-errors.md:
- Line 58: Update the legacy usage example’s condition to record result.usage
only when result.model_usage is None, so it acts as a fallback when normalized
accounting is absent.
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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/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.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/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxadapters/python/common/README.mddocs/adapter-contract/tutorials/results.mddocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxskills/nemo-fabric-integrate/references/sdk-api-inventory.mdschemas/SCHEMA.mddocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxadapters/typescript/cline/README.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.mdxskills/nemo-fabric-integrate/references/results-and-errors.mddocs/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/model-usage/struct-costamount.mdxdocs/integrations/harness/cline.mdxadapters/python/claude/README.mddocs/reference/api/python-library-reference/nemo_fabric.accounting.mdskills/nemo-fabric-build-adapter/SKILL.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxadapters/python/deepagents/README.mddocs/reference/api/python-library-reference/index.mddocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.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/typescript/scripts/check-package.mjsexamples/openshell/run-demo.shadapters/python/codex/README.mdadapters/python/common/README.mdadapters/typescript/cline/test/runtime.test.mjsadapters/typescript/cline/README.mdadapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.pyadapters/python/claude/README.mdadapters/typescript/cline/cline.fabric-adapter.jsonadapters/typescript/cline/test/usage-source.test.mjsadapters/typescript/cline/test/cline-sdk.test.mjsadapters/python/deepagents/deepagents.fabric-adapter.jsonadapters/python/deepagents/README.mdadapters/typescript/cline/src/runtime.tsadapters/typescript/cline/test/usage.test.mjsadapters/typescript/cline/src/usage.tsadapters/typescript/cline/src/cline-sdk.tsadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/usage.pyadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/adapter.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/adapters/test_adapaters_common_utils.pytests/adapters/test_deepagents_usage_descriptor.pytests/fixtures/usage_accounting/reducer-cases.jsontests/_utils/utils.pytests/scripts/test_openshell_launcher.pytests/adapters/test_adapters_common_relay_gateway.pytests/python/test_usage_reducer_parity.pytests/fixtures/usage_accounting/conformance.jsontests/docs/test_python_api_docs.pytests/python/conftest.pytests/python/test_model_usage.pytests/adapters/test_deepagents_accounting.pytests/adapters/test_deepagents.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...
📄 CodeRabbit inference engine (schemas/SCHEMA.md)
Files:
crates/fabric-core/src/schema.rsschemas/sdk/run-result.schema.jsoncrates/fabric-core/src/measurement.rscrates/fabric-core/src/lib.rsschemas/extensions/usage-accounting.schema.jsoncrates/fabric-core/src/runtime.rscrates/fabric-core/src/pricing.rscrates/fabric-core/src/usage_accounting.rscrates/fabric-core/src/model_usage.rscrates/fabric-core/src/usage_normalization.rs
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/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.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/model-usage/struct-costamount.mdxdocs/reference/api/python-library-reference/nemo_fabric.accounting.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/reference/api/python-library-reference/index.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.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/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.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/enum-gapreason.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-costamount.mdxdocs/integrations/harness/cline.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.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/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.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/enum-gapreason.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-costamount.mdxdocs/integrations/harness/cline.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.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/pricing/struct-ratesnapshot.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/enum-usagedimension.mdxdocs/index.ymldocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencost.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-appliedpricing.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-tokencounts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/adapter-contract/tutorials/results.mddocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountingerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/error/enum-fabricerror.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-permodelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-usagegap.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usageaccounting.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-usagerequest.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/enum-schemaname.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/constant-usage-accounting-extension.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/model-usage/struct-costamount.mdxdocs/integrations/harness/cline.mdxdocs/reference/api/python-library-reference/nemo_fabric.accounting.mddocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-accountedmodel.mdxdocs/reference/api/python-library-reference/index.mddocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/struct-reportedusage.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
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/typescript/cline/README.mdadapters/python/claude/README.mdadapters/python/deepagents/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/lib.rscrates/fabric-core/src/runtime.rs
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/typescript/scripts/check-package.mjsadapters/python/codex/README.mdadapters/python/common/README.mdadapters/typescript/cline/test/runtime.test.mjsadapters/typescript/cline/README.mdadapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.pyadapters/python/claude/README.mdadapters/typescript/cline/cline.fabric-adapter.jsonadapters/typescript/cline/test/usage-source.test.mjsadapters/typescript/cline/test/cline-sdk.test.mjsadapters/python/deepagents/deepagents.fabric-adapter.jsonadapters/python/deepagents/README.mdadapters/typescript/cline/src/runtime.tsadapters/typescript/cline/test/usage.test.mjsadapters/typescript/cline/src/usage.tsadapters/typescript/cline/src/cline-sdk.tsadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/usage.pyadapters/python/deepagents/src/nemo_fabric_adapters/deepagents/adapter.py
Applicability reference: AGENTS.md: # AGENTS.md Keep release policy and the end-to-end maintainer workflow in `RELEASING.md`; keep packaging implementation guidance in `.agents/skills/maintain-packaging/SKILL.md`.
📄 CodeRabbit inference engine (RELEASING.md)
Files:
pyproject.toml
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: 1
📚 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/system-stats/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/struct-modelusage.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/pricing/struct-pricingbasis.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/resource-snapshot/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/schema/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/usage-accounting/enum-usagedimension.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/model-usage/index.mdx
🪛 ast-grep (0.45.3)
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)
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/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)
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)
🪛 LanguageTool
adapters/typescript/cline/README.md
[style] ~97-~97: The words ‘observations’ and ‘observed’ are quite similar. Consider replacing ‘observed’ with a different word.
Context: ...n omitted output count does not discard observed input or cache counts. Cline 0.0.83 fil...
(VERB_NOUN_SENT_LEVEL_REP)
docs/integrations/harness/cline.mdx
[style] ~149-~149: The words ‘observations’ and ‘observed’ are quite similar. Consider replacing ‘observed’ with a different word.
Context: ...n omitted output count does not discard observed input or cache counts. Cline 0.0.83 fil...
(VERB_NOUN_SENT_LEVEL_REP)
🪛 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'
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(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.
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(Agent Snooping (AS3))
Keep packaged adapter declarations in the canonical usage-schema synchronization and drift check. Prevent the check from passing with a stale packaged schema. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Return the documented JSON-compatible rate snapshot instead of exposing a frozen internal mapping. Preserve optional cache rates and snapshot isolation. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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Review Python SDK changes for typed API consistency, import-time dependency neutrality, async/session behavior, and parity with the native extension.
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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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🪛 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: 10
adapter-contract/typescript/src/usage.ts: 1
147-152: LGTM!adapter-contract/typescript/test/usage-reducer.test.js: 1
50-55: LGTM!adapters/python/common/src/nemo_fabric_adapters/common/relay_gateway.py: 1
135-139: LGTM!adapters/python/common/README.md: 1
129-132: LGTM!tests/adapters/test_adapters_common_relay_gateway.py: 1
242-252: LGTM!tests/python/test_model_usage.py: 1
489-489: LGTM!Also applies to: 495-498, 501-515, 518-537
adapters/python/deepagents/README.md: 1
244-249: LGTM!docs/reference/api/python-library-reference/nemo_fabric.types.md: 1
2090-2095: LGTM!Also applies to: 2512-2517
scripts/contracts/generate_usage_accounting.py: 1
25-25: LGTM!sdk/python/nemo-fabric-runtime/src/nemo_fabric/types.py: 1
2541-2544: LGTM!Also applies to: 2584-2584, 2815-2818
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Review comments at @adapters/typescript/cline/src/usage.ts:
- Line 115: Update the baseline lookup in the usage aggregation flow so the
first call without a baseline treats missing prior usage as zero and preserves
positive usage-updated values. Keep requiring an explicit baseline for calls
after a completed call; use the existing call-order state to distinguish the
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- Around line 86-90: Update the ID-less completion branch in afterModel to
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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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20-20: LGTM!Also applies to: 38-54, 58-58
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>
mnajafian-nv
marked this pull request as ready for review
October 23, 2026 15:30
mnajafian-nv
marked this pull request as draft
October 23, 2026 15:53
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
mnajafian-nv
marked this pull request as ready for review
October 23, 2026 16:55
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>
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Overview
Cline can expose useful token counts without proving they cover every provider attempt. Its model hooks hide internal retries, and its metrics can replace omitted fields with zero.
Collect the available counts for each NVIDIA NeMo Fabric invocation without labeling them as complete totals. Preserve partial evidence after interruption and explain why coverage remains unknown.
Dependencies: #442 supplies the shared accounting contract and normalizer. The diff against
mainincludes unmerged prerequisites.Details
Associate each logical model call with its invocation. Positive input, output and cache counts remain observations when Cline 0.0.83 cannot establish field presence or coverage of every physical request. Compaction and unfinished calls leave explicit gaps.
A completed call without a message ID still closes its pending call and retains its metrics as observations. For an unfinished first call, retain the available cumulative counts. For later unfinished calls, retain only differences supported by a known baseline so earlier calls are not counted again.
Freeze the snapshot at return; late reports cannot enter another invocation. Shared accounting in #442 owns normalization. Zeros inserted by Cline do not establish a reported zero, and Cline's cost metric is not promoted to provider-reported cost. The integration example uses legacy usage only when model accounting is absent.
Validation
Regression tests cover zero-filled fields, missing message IDs, unfinished-call baselines, compaction, duplicate reports and frozen snapshots. Source tests exercise the pinned Cline hooks and retry behavior; those tests skip when the required source package is unavailable.
Where should the reviewer start?
Start with
adapters/typescript/cline/src/usage.tsand its hooks incline-sdk.ts. Reviewtest/usage.test.mjsfor unfinished-call baselines and missing IDs, thentest/usage-source.test.mjsfor the pinned source limits.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.