fix(llms): native structured outputs for current claude models, and snowflake CVE floor - #7182
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NATIVE_STRUCTURED_OUTPUT_MODELS only listed 4.5-era prefixes, so Opus 5,
Sonnet 5, Fable 5 and Opus 4.8 fell through to the forced-tool-call
fallback. That path also overwrites params["tools"], so a call combining
tools with a response_model silently lost the caller's tools.
_infer_provider_from_model documented a pattern-matching fallback it never
performed, so a Claude release newer than the constants list resolved to
"openai". Bedrock ('.' in model) and Azure (every OpenAI prefix) are left
out of that fallback because they would capture gpt-* models.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
joaomdmoura
added
the
llm-generated
📝 WalkthroughWalkthroughProvider inference routes unlisted Bedrock Anthropic IDs to Bedrock. Anthropic native structured outputs include additional Claude models. Tests cover synchronous, asynchronous, streaming, tool preservation, and fallback behavior. Snowflake Connector versions are constrained to a security-fixed release. ChangesProvider inference and structured outputs
Dependency security
Sequence Diagram(s)sequenceDiagram
participant LLM
participant AnthropicCompletion
participant AnthropicBetaAPI
participant PydanticAnswer
LLM->>AnthropicCompletion: submit structured-output request
AnthropicCompletion->>AnthropicBetaAPI: send JSON-schema format request
AnthropicBetaAPI-->>AnthropicCompletion: return structured response
AnthropicCompletion->>PydanticAnswer: validate response
PydanticAnswer-->>LLM: return validated result
Suggested reviewers: Merge Risk: 🔵 Low · up to The PR changes Claude structured-output routing and raises the Snowflake connector floor; the only current-head issue is a stale dependency override comment that says 4.6.0 while the lockfile resolves 4.7.2. This is a bounded maintainability risk and is mergeable with owner follow-up. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 18 functions across 4 files. (1 skipped: 1 unsupported.) Full details: Description checkExplanation The description gives detailed technical context, scope, tests, known failures, and follow-up work. However, it omits the required "## Related issue" section and issue reference, does not use the required section headings, and does not include the verification checklist from the template. Resolution Add the required "## Related issue" section with an existing open issue reference, then organize the content under "## Summary", "## Verification", and "## Additional context". Include the required verification checklist and mark the applicable items.
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Inline comments:
In `@lib/crewai/src/crewai/llm.py`:
- Line 669: Update the provider-selection logic around _matches_provider_pattern
to detect Bedrock-format anthropic.claude-*-v1:0 model IDs before the Anthropic
prefix-matching loop, routing them to BedrockCompletion even when absent from
BEDROCK_MODELS. Add a regression test covering an unlisted Bedrock Anthropic ID
and verify it does not select AnthropicCompletion.
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"anthropic.claude-*" is Bedrock's namespace, not the Anthropic API, and it
satisfies the anthropic prefix pattern. Settle it before the pattern loop so
an unlisted Bedrock id picks BedrockCompletion. The region-prefixed form
("us.anthropic.claude-*") was resolving to openai, so this repairs that too.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Update — this check is now green; leaving the analysis below for the record. The full matrix passes on I previously described that failure as deterministic, on the basis of two consecutive runs failing in shard 6 (3.11, then 3.12). That was an over-claim. The third run has an identical test set — the dependency commit adds no tests, so collection and the What still holds, and is worth keeping in mind independently of this PR:
So that test is order/environment sensitive, and the even-by-count splitting means any PR adding a batch of tests reshuffles which tests it runs alongside. That is pre-existing and structural rather than specific to this PR, and it deserves its own ticket — but it is not blocking here. The other item from the original comment is resolved rather than deferred: |
GHSA-5cc2-282f-jjq2 (CRITICAL): the connector does not verify TLS hostnames, so a network attacker can impersonate the Snowflake endpoint. Fixed in 4.7.1. crewai-tools[snowflake] declares "snowflake-connector-python>=3.12.4", which the lock had resolved to 4.6.0. Following the existing convention, the security floor goes in [tool.uv] override-dependencies rather than the source declaration, matching how cryptography is handled. Relocking also refreshes numpy/humanfriendly/nvidia environment markers, which re-resolution under the relative exclude-newer window produces regardless of this change. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Inline comments:
In `@pyproject.toml`:
- Line 237: Update the comment near the dependency override to clarify that
version 4.6.0 was the pre-override resolution, or revise it to match the current
uv.lock resolution of snowflake-connector-python 4.7.2.
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NATIVE_STRUCTURED_OUTPUT_MODELS, so aresponse_modelon those models is sent asoutput_format: {type: json_schema}under thestructured-outputs-2025-11-13beta instead of falling through to the forced-tool-call fallback._MAX_OUTPUT_TOKENS_BY_PREFIXalready knew about these models; this gate did not.params["tools"] = [structured_tool], overwriting the tools set in_prepare_completion_params, so a call combining tools with aresponse_modelsilently dropped the caller's tools on every non-listed model._infer_provider_from_modelnow falls through to_matches_provider_patternfor anthropic and gemini. Its docstring already promised pattern matching, but the body only checked the hardcoded constants and returned"openai", so a Claude release newer thanANTHROPIC_MODELSresolved to the OpenAI provider. Bedrock and Azure are deliberately excluded from that loop — their patterns ("." in model, and every OpenAI prefix) would capturegpt-3.5-turboandgpt-4o. Bedrock'santhropic.claude-*namespace is settled before the loop instead, so an unlisted Bedrock id picksBedrockCompletion; the region-prefixed form (us.anthropic.claude-*) was resolving to openai and is fixed by the same guard.extra_body["output_format"]actually reach the client, plus that the caller's tools survive on the native path. The forced-tool fallback is pinned for an unsupported model (claude-3-5-haiku-20241022), and the routing change pins its existing callers:gpt-3.5-turbo,gpt-4.1,gpt-4o,o1and unknown strings still resolve to openai. Unlisted Bedrock Anthropic ids are pinned tobedrockacross the bare and region-prefixed forms. All 22 new tests fail without the corresponding fix and pass here.docs/edge/en/concepts/llms.mdxdeliberately links Anthropic's live models overview rather than enumerating model IDs, and the structured-output note is provider-generic.get_context_window_sizestill reports 200K for Opus 5), no redesign of the forced-tool fallback's tool clobbering, no bedrock/azure pattern inference, noclaude-mythos-5, and Opus 4.6 / 4.7 are not added — Anthropic's supported-model list does not name them and failing closed to the working fallback beats a 400.🤖 Generated with Claude Code
Note
Medium Risk
Changes affect which SDK handles LLM calls and how structured outputs are requested for newer Claude models; mis-routing would break agents at runtime, but new tests cover the routing matrix and API paths.
Overview
Enables native JSON-schema structured outputs for Claude Fable 5, Opus 5, Sonnet 5, and Opus 4.8 (including alternate ID spellings) by extending
NATIVE_STRUCTURED_OUTPUT_MODELS, soresponse_modeluses the structured-outputs beta instead of the forced-tool fallback. Tests lock in sync/async and streaming paths, caller tools on the native path, and fallback behavior for older models.Provider routing in
_infer_provider_from_modelnow matches the documented behavior: Bedrock-styleanthropic.claude-*IDs (including region prefixes) resolve to bedrock before pattern checks, and unlistedclaude-*/gemini-*names fall through to anthropic / gemini via_matches_provider_patternwithout misrouting OpenAI models.Also bumps
snowflake-connector-pythonto ≥4.7.1 (TLS verification CVE) in workspace overrides and the lockfile.Reviewed by Cursor Bugbot for commit 58a4924. Bugbot is set up for automated code reviews on this repo. Configure here.