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feat: record the selected adapter descriptor fingerprint - #444
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A RunResult says which agent and adapter ran, but not which Fabric version, models or MCP servers were behind it, so a rerun weeks later cannot tell what changed. Add an optional, versioned what_ran object. Each fact holds a value, or a state and a reason, plus how Fabric learned it: its source, collector and method. Core fills the facts it holds before it sends the request: its own version, the adapter ID, the requested models, the configured MCP servers with secret-free endpoints, and the environment provider. Core reads no adapter report yet, so adapter-reported facts read unsupported with reason key_not_declared. On the OpenShell host path, the host relabels the task core's facts as task_core, records its own version as host_core_version and sets the environment provider to openshell. A task result without a readable what_ran keeps what_ran absent. The Rust and Python readers apply the same structural checks, tested against one shared vector file. A malformed what_ran reads as absent and never fails the enclosing result. Core gains a direct dependency on sha2 0.10, already in the lockfile, for the string length rule. Rust code that builds RunResult with a struct literal must add the what_ran field. Python's RunResult.to_mapping() now always includes it. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Explain the fact envelope, the four no-value states, the endpoint rule, the OpenShell attribution and the structural read, and keep the integration skill's RunResult table in step with the guide. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Regenerate the Rust library reference with Rust 1.94.0 for the new what_ran module and the RunResult field, and the Python types reference for RunResult.what_ran. Only the pages this change affects are included. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
A plan with many model roles or MCP servers, or very long names, could make what_ran arbitrarily large, and every RunResult carries it. Keep it bounded without ever failing a run. Core keeps the first 16 model roles and 32 MCP servers in sorted key order, and drops entries whose key is longer than 128 characters. While the compact JSON of what_ran is larger than 128 KiB, it drops MCP servers from the end of the sorted order, then model roles. If plan identifiers alone still exceed the budget, what_ran becomes a minimal object with only the schema name, the version and what_ran_truncated. A marker next to each map counts the dropped entries and names the last rule applied. The OpenShell host applies the same bounds again after it attributes the task core's facts, so they hold for a task core of any version. The six what_ran sections become optional in the Rust type so the minimal object can be represented. Every section is still required unless what_ran_truncated is present, and no section may be null. The Rust reader, the generated schema and the Python reader check this against the shared vectors. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Explain the entry caps, the key length rule, the byte budget, the truncation markers and the minimal object, and tell readers to check what_ran_truncated before reading a section. Keep the integration skill's RunResult notes in step. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Regenerate the Rust library reference pages of the what_ran module for TruncatedEntries and the optional sections, and update the Python types reference for RunResult.what_ran. Only the pages this change affects are included. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
what_ran names the adapter by its ID, but two installs can ship different descriptors under one ID. Record which descriptor file a run used, as nemo.fabric.adapter_descriptor/v1: the SHA-256 of the RFC 8785 form of the descriptor as authored, before core fills in defaults. Hashing the authored file keeps the value stable when core starts writing a new default, and it equals the bundled catalog's sha256. Plan resolution fingerprints the first provenance record's file and stores it as ResolvedAdapterDescriptor.descriptor_fingerprint, so the value travels with a plan that crosses the Python SDK as JSON. Core copies it into what_ran.adapter.descriptor_fingerprint as an observed fact. Both fields are optional, so plans and results from an older core still decode. A golden test recomputes every bundled adapter's fingerprint from its source file and compares it with the catalog, and a plan resolution test proves the production path hashes the authored file, not the normalized descriptor. The SDK's descriptor_sha256 admission check is unchanged. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Add descriptor_fingerprint to the what_ran adapter row in the Python SDK guide and to the integration skill's RunResult table. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Regenerate the Rust library reference pages for AdapterFacts and ResolvedAdapterDescriptor with Rust 1.94.0. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
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WalkthroughThe change adds authored adapter descriptor fingerprints and a versioned ChangesExecution provenance and descriptor fingerprints
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant FabricRuntime
participant WhatRanCollector
participant Adapter
participant RunResult
FabricRuntime->>WhatRanCollector: collect facts before the adapter request
FabricRuntime->>Adapter: send invocation request
Adapter-->>FabricRuntime: return invocation result
FabricRuntime->>RunResult: attach collected WhatRan data
Merge Risk: ⚪ Minimal · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 61.54% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 156 functions across 10 files. (6 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, uses the allowed lowercase type feat, provides a concise imperative summary, stays under 72 characters, and matches the main change.Description check The description is complete and relevant. It includes an overview, reviewer starting point, implementation details, compatibility notes, validation results, and completed contribution checks. The rela… 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. Full details: Description check
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Explanation
The description is complete and relevant. It includes an overview, reviewer starting point, implementation details, compatibility notes, validation results, and completed contribution checks. The related issue uses
Depends on #443instead of one of the required action keywords, but the description remains mostly complete.
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Full details: Docstring Coverage
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Explanation
Docstring coverage is 61.54% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 156 functions across 10 files. (6 skipped: 6 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Review comments at @crates/fabric-core/src/what_ran.rs:
- Around line 830-837: Update descriptor_fingerprint_fact to label plan-provided
descriptor_fingerprint values as FactSource::Configured instead of
FactSource::Observed, since the runtime does not validate them against the
descriptor that executes. Update related documentation and test vectors to
expect the configured source while preserving the existing missing-fingerprint
behavior.
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Cargo.tomlcrates/fabric-core/Cargo.tomlcrates/fabric-core/src/config.rscrates/fabric-core/src/descriptor_fingerprint.rscrates/fabric-core/src/endpoint.rscrates/fabric-core/src/lib.rscrates/fabric-core/src/runtime.rscrates/fabric-core/src/runtime/openshell.rscrates/fabric-core/src/what_ran.rsdocs/reference/api/python-library-reference/nemo_fabric.types.mddocs/reference/api/rust-library-reference/nemo-fabric-core/config/struct-resolvedadapterdescriptor.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-schema.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-fact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factsource.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factstate.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-adapterfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-environmentfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-fabricfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-factorigin.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-harnessfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-knownfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpruntimefacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpserverfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-missingfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-modelfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-truncatedentries.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-whatran.mdxdocs/sdk/python.mdxschemas/sdk/run-plan.schema.jsonschemas/sdk/run-result.schema.jsonsdk/python/nemo-fabric-runtime/src/nemo_fabric/types.pyskills/nemo-fabric-integrate/references/results-and-errors.mdtests/fixtures/what_ran/reader-vectors.jsontests/python/test_native_sdk.pytests/python/test_sdk_contract.py
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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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docs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-environmentfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/config/struct-resolvedadapterdescriptor.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/index.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-schema.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpruntimefacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factstate.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factsource.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-knownfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-factorigin.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-adapterfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-missingfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-modelfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-harnessfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-truncatedentries.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-whatran.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-fabricfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpserverfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-fact.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/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-environmentfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/config/struct-resolvedadapterdescriptor.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/index.mdxdocs/sdk/python.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-schema.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpruntimefacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factstate.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factsource.mdxdocs/reference/api/python-library-reference/nemo_fabric.types.mddocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-knownfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-factorigin.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-adapterfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-missingfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-modelfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-harnessfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-truncatedentries.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-whatran.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-fabricfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpserverfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-fact.mdx
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/results-and-errors.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/lib.rscrates/fabric-core/src/config.rscrates/fabric-core/src/runtime.rs
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/Cargo.toml
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/Cargo.tomlcrates/fabric-core/src/lib.rscrates/fabric-core/src/config.rscrates/fabric-core/src/runtime/openshell.rscrates/fabric-core/src/runtime.rscrates/fabric-core/src/endpoint.rscrates/fabric-core/src/descriptor_fingerprint.rscrates/fabric-core/src/what_ran.rs
Source excerpt: Establish the release branch and target version.
📄 CodeRabbit inference engine (.agents/skills/draft-release-notes/SKILL.md)
Files:
Cargo.toml
Source excerpt: Confirm the target release version from `upstream/main:Cargo.toml`.
📄 CodeRabbit inference engine (.agents/skills/prepare-code-freeze/SKILL.md)
Files:
Cargo.toml
🧠 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/fn-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-environmentfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/config/struct-resolvedadapterdescriptor.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/index.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-schema.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-version.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpruntimefacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factstate.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factsource.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-knownfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-factorigin.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-adapterfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-missingfact.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-modelfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-harnessfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-truncatedentries.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpserverfacts.mdxdocs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-fact.mdx
🪛 Betterleaks (1.9.0)
crates/fabric-core/src/endpoint.rs
[high] 135-135: Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.
(generic-credential-uri)
[high] 150-150: Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.
(generic-credential-uri)
[high] 166-166: Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.
(generic-credential-uri)
[high] 167-167: Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.
(generic-credential-uri)
[high] 168-168: Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.
(generic-credential-uri)
crates/fabric-core/src/what_ran.rs
[high] 1013-1013: Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.
(generic-credential-uri)
🔇 Additional comments: 40
Cargo.toml: 1
39-42: LGTM!crates/fabric-core/Cargo.toml: 1
20-22: LGTM!crates/fabric-core/src/config.rs: 1
24-24: LGTM!Also applies to: 429-435, 501-504, 613-615, 1873-1886, 2496-2499, 2555-2566, 2974-2978, 4376-4400, 4469-4469
crates/fabric-core/src/descriptor_fingerprint.rs: 1
1-372: LGTM!schemas/sdk/run-plan.schema.json: 1
2676-2682: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/config/struct-resolvedadapterdescriptor.mdx: 1
12-12: LGTM!Also applies to: 26-29
crates/fabric-core/src/endpoint.rs: 1
1-232: LGTM!crates/fabric-core/src/lib.rs: 1
10-18: LGTM!schemas/sdk/run-result.schema.json: 1
3-33: LGTM!Also applies to: 116-128, 242-660, 788-881, 971-981
docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-schema.mdx: 1
1-15: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/constant-what-ran-version.mdx: 1
1-15: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-fact.mdx: 1
1-109: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factsource.mdx: 1
1-123: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/enum-factstate.mdx: 1
1-130: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/index.mdx: 1
1-55: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-adapterfacts.mdx: 1
1-107: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-environmentfacts.mdx: 1
1-99: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-fabricfacts.mdx: 1
1-103: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-factorigin.mdx: 1
1-107: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-harnessfacts.mdx: 1
1-103: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-knownfact.mdx: 1
1-103: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpfacts.mdx: 1
1-103: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpruntimefacts.mdx: 1
1-115: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-mcpserverfacts.mdx: 1
1-113: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-missingfact.mdx: 1
1-107: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-modelfacts.mdx: 1
1-107: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-truncatedentries.mdx: 1
1-105: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/what-ran/struct-whatran.mdx: 1
1-139: LGTM!docs/sdk/python.mdx: 1
970-970: LGTM!Also applies to: 1000-1088
docs/reference/api/rust-library-reference/nemo-fabric-core/index.mdx: 1
155-155: LGTM!docs/reference/api/rust-library-reference/nemo-fabric-core/fn-version.mdx: 1
5-5: LGTM!crates/fabric-core/src/runtime.rs: 1
35-35: LGTM!Also applies to: 156-164, 1926-1930, 2185-2185, 4437-4437, 5462-5580
crates/fabric-core/src/runtime/openshell.rs: 1
436-436: LGTM!Also applies to: 520-529, 861-1002
docs/reference/api/rust-library-reference/nemo-fabric-core/runtime/struct-runresult.mdx: 1
12-12: LGTM!Also applies to: 78-81
sdk/python/nemo-fabric-runtime/src/nemo_fabric/types.py: 1
9-10: LGTM!Also applies to: 1968-2164, 2189-2197, 2215-2215, 2233-2236, 2272-2272
docs/reference/api/python-library-reference/nemo_fabric.types.md: 1
1446-1446: LGTM!Also applies to: 1471-1471
tests/fixtures/what_ran/reader-vectors.json: 1
1-1053: LGTM!tests/python/test_native_sdk.py: 1
421-429: LGTM!tests/python/test_sdk_contract.py: 1
11-11: LGTM!Also applies to: 2005-2077
skills/nemo-fabric-integrate/references/results-and-errors.md: 1
24-24: LGTM!Also applies to: 50-60
Core copies the fingerprint from the resolved plan, where discovery recorded it, and cannot check it again at collection time because the hash covers the authored file, which the plan does not keep. A configured fact is one that comes from the resolved plan, so label it configured instead of observed, for the value and for both missing states. The collector stays host_core and the method stays nemo.fabric.adapter_descriptor/v1. Update the reader vector base, the tests, the Python SDK guide, the generated schema and the AdapterFacts reference page to match. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
Core computes the descriptor fingerprint once, when plan resolution selects the descriptor, and what_ran copies it from the resolved plan. Nothing recomputes or checks it at invocation, so it identifies the selected descriptor, not what executed. Say so in the plan and what_ran field docs, the module docs, the Python SDK guide and the integration skill, instead of calling it the descriptor the run used. Regenerate the run plan and run result schemas and the affected reference pages. Signed-off-by: mnajafian-nv <mnajafian@nvidia.com>
mnajafian-nv
changed the title
2 tasks done
mnajafian-nv
marked this pull request as draft
October 22, 2026 23:41
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Overview
Today
what_rannames the adapter by its ID, but two installs can ship different descriptors under that ID, and nothing tells them apart. The bundled catalog records a SHA-256 per descriptor, but core does not currently produce that value.This PR adds
what_ran.adapter.descriptor_fingerprint, asha256:<hex>fact with methodnemo.fabric.adapter_descriptor/v1. It identifies the descriptor selected during plan resolution, by authored contents, not file. It is copied from the resolved plan as a configured fact and never recomputed at invocation, so it is not an execution attestation. The SDK'sdescriptor_sha256keeps its value and its admission-check role.Compatibility:
ResolvedAdapterDescriptorinRunPlangains an optionaldescriptor_fingerprint. Old serialized plans decode through a serde default, and Python plan mappings keep the field. External Rust code that buildsResolvedAdapterDescriptorwith a struct literal must add the new public field.Details
json.dumps, not RFC 8785. The two agree for descriptors without floats, integers beyond 2^53 or keys outside the Basic Multilingual Plane. That condition is sufficient, not necessary.not_applicable(no_adapter). A plan without a fingerprint, such as one from an older core, readsunavailable(not_in_plan). Standalone adapter inspection leaves the field absent.Validation
cargo test -p nemo-fabric-core --locked: 214 passed, including the golden test against all 16 catalog digests, RFC 8785 vectors and standalone inspection.generate_adapter_catalog.py --check: current. Schema regeneration: no drift.cargo fmt --check,cargo clippyandgit diff --check: pass.Where should the reviewer start?
authored_descriptor_sha256incrates/fabric-core/src/descriptor_fingerprint.rs.Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)
Depends on feat: include execution facts in run results #443.
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.
Summary by CodeRabbit
New Features
Documentation
Tests