[FIX] Strip deprecated sampling params for Claude Opus 4.7#1934
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WalkthroughAdds regex-based Anthropic model-id normalization and detection plus a helper that returns a shallow copy of validated params with ChangesSampling parameter cleanup & model detection
Sequence DiagramsequenceDiagram
participant Client as Client
participant Validator as Adapter Validator
participant Stripper as _strip_deprecated_sampling_params
participant Provider as Provider API
Client->>Validator: call validate(params)
Validator->>Stripper: _strip_deprecated_sampling_params(validated)
Stripper-->>Validator: cleaned_params
Validator->>Provider: forward cleaned_params
Provider-->>Client: response
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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| Filename | Overview |
|---|---|
| unstract/sdk1/src/unstract/sdk1/adapters/base1.py | Adds _has_deprecated_sampling_params / _strip_deprecated_sampling_params helpers with a trailing-anchored regex and wires them into all four Anthropic-proxying adapter validate() methods. model_id field on AWSBedrockLLMParameters ensures the AIP ARN fallback path works correctly through Pydantic. |
| unstract/sdk1/tests/test_sampling_strip.py | New test module covering 24 positive / 14 negative detection cases, strip contract, AIP ARN fallback via model_id, debug-log guard behaviour, and end-to-end adapter wiring for all four providers including a dedicated Vertex AI regression test. |
Reviews (6): Last reviewed commit: "[FIX] Narrow strip-skipped breadcrumb to..." | Re-trigger Greptile
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Actionable comments posted: 1
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Verify each finding against the current code and only fix it if needed.
Inline comments:
In `@unstract/sdk1/src/unstract/sdk1/adapters/base1.py`:
- Around line 50-53: VertexAILLMParameters.validate currently returns
validated_data without stripping Anthropic deprecated sampling params; modify
validate to call self._strip_deprecated_sampling_params(validated_data) (like
the other providers do) before returning so temperature/top_p/top_k are removed
for Anthropic/Claude Opus 4.7+ model IDs (e.g., vertex_ai/claude-opus-4-7@...) —
update the return path in VertexAILLMParameters.validate to return the stripped
validated_data.
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@pk-zipstack will we still show the temperature field in the UI for such models?
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Automated review pass (PR Review Toolkit: code-reviewer, silent-failure-hunter, type-design-analyzer, comment-analyzer, code-simplifier, pr-test-analyzer). Findings posted inline; deduplicated against existing greptile/CodeRabbit/maintainer comments. Grouped by line and roughly prioritised (HIGH → LOW/optional).
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Address PR #1934 review: - HIGH: anchor regex no longer admits `v`-prefixed alpha continuations. `(?=$|[-:@/v])` accepted `claude-opus-4-7verbose`/`vnext`/`variant`. Switched to `(?=$|[-:@/]|v\d)` — keeps `v1` / `v9` version tags valid, rejects bare-`v` continuations. - HIGH: `_strip_deprecated_sampling_params` now logs a debug breadcrumb when sampling params are present but no model id field matches. This is the silent-skip path for opaque Bedrock AIP ARNs / Azure Foundry deployments that omit the model id — operators hitting the upstream 400 now have a way to confirm detection was attempted-and-skipped vs never attempted. - MED: helper no longer mutates its input. Returns a shallow copy, matching the file's `result_metadata = adapter_metadata.copy()` style. - MED: docstring documents the contract change — returned dict may omit the `temperature` key. Consumers must use `.get("temperature")`. Grepped platform-service / SDK / workers / backend for direct `["temperature"]` reads; only one consumer accesses it and uses `.get()` already, so no caller-side change needed today. - LOW: comment drift — `substring-matched` → `regex-searched`; misleading route-prefix bullet rewritten as "leading text passes through because the regex is anchored only at the trailing edge"; docs URL switched from `platform.claude.com` (console host) to `docs.claude.com` (canonical docs host); docstring extends top_p/top_k strip rationale; redundant Foundry inline comment removed (helper docstring covers it). - MED: new `tests/test_sampling_strip.py` (57 cases) pins - 23 positive id formats (native, Bedrock foundation/cross-region/ARNs, Vertex `@<date>`, Azure deployments, dot/underscore separators, `v\d` version tags) - 18 negatives including prefix collisions (`4-70`, `4-75`, `4-79`, `4-71-...`) and bare-`v` continuations (`4-7verbose`/`vnext`/`variant`) - copy-not-mutate, all-three-params strip, AIP fallback via both `model` and `model_id`, double-opaque limitation + debug log, quiet-no-op for non-deprecated models - parametrized end-to-end strip across all four adapters (Anthropic, Bedrock, Azure AI Foundry, Vertex AI) — locks the Vertex AI gap that surfaced in this PR's review. All 278 sdk1 tests pass (221 pre-existing + 57 new). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Actionable comments posted: 1
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Inline comments:
In `@unstract/sdk1/tests/test_sampling_strip.py`:
- Around line 158-160: The docstrings in test_sampling_strip.py (the three
multiline literals immediately preceding the inp definitions around the sections
noted) must follow D205/D209: ensure each docstring has a single-line summary,
then a blank line, then the body (if any), and place the closing triple quotes
on their own line; update the three offending docstrings (the one above the inp
= {...} at the first location and the two others referenced) to add the required
blank line after the summary and move the closing triple quotes to a separate
line.
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Address review feedback on the Opus 4.7 sampling-param strip: - VertexAILLMParameters.validate() now returns the stripped dict, so Claude Opus 4.7 routed through Vertex AI (vertex_ai/claude-opus-4-7@...) no longer sends temperature/top_p/top_k. - Model pattern is now an anchored regex (`claude-opus-4-7(?=$|[-:@/v])`) so prefix collisions like claude-opus-4-70, claude-opus-4-75 do not silently strip sampling params from unrelated future models. The allowed delimiters cover every real id format: date suffix, Vertex @<date>, ARN paths, v1:0 version tag, and end-of-string. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Address PR #1934 review: - HIGH: anchor regex no longer admits `v`-prefixed alpha continuations. `(?=$|[-:@/v])` accepted `claude-opus-4-7verbose`/`vnext`/`variant`. Switched to `(?=$|[-:@/]|v\d)` — keeps `v1` / `v9` version tags valid, rejects bare-`v` continuations. - HIGH: `_strip_deprecated_sampling_params` now logs a debug breadcrumb when sampling params are present but no model id field matches. This is the silent-skip path for opaque Bedrock AIP ARNs / Azure Foundry deployments that omit the model id — operators hitting the upstream 400 now have a way to confirm detection was attempted-and-skipped vs never attempted. - MED: helper no longer mutates its input. Returns a shallow copy, matching the file's `result_metadata = adapter_metadata.copy()` style. - MED: docstring documents the contract change — returned dict may omit the `temperature` key. Consumers must use `.get("temperature")`. Grepped platform-service / SDK / workers / backend for direct `["temperature"]` reads; only one consumer accesses it and uses `.get()` already, so no caller-side change needed today. - LOW: comment drift — `substring-matched` → `regex-searched`; misleading route-prefix bullet rewritten as "leading text passes through because the regex is anchored only at the trailing edge"; docs URL switched from `platform.claude.com` (console host) to `docs.claude.com` (canonical docs host); docstring extends top_p/top_k strip rationale; redundant Foundry inline comment removed (helper docstring covers it). - MED: new `tests/test_sampling_strip.py` (57 cases) pins - 23 positive id formats (native, Bedrock foundation/cross-region/ARNs, Vertex `@<date>`, Azure deployments, dot/underscore separators, `v\d` version tags) - 18 negatives including prefix collisions (`4-70`, `4-75`, `4-79`, `4-71-...`) and bare-`v` continuations (`4-7verbose`/`vnext`/`variant`) - copy-not-mutate, all-three-params strip, AIP fallback via both `model` and `model_id`, double-opaque limitation + debug log, quiet-no-op for non-deprecated models - parametrized end-to-end strip across all four adapters (Anthropic, Bedrock, Azure AI Foundry, Vertex AI) — locks the Vertex AI gap that surfaced in this PR's review. All 278 sdk1 tests pass (221 pre-existing + 57 new). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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🧹 Nitpick comments (1)
unstract/sdk1/tests/test_sampling_strip.py (1)
243-245: ⚡ Quick winMake
top_p/top_kstrip assertions non-vacuous in adapter wiring tests.At Line 243 and Line 249, only
temperatureis passed in, so checks fortop_pandtop_kpass even if strip wiring regresses for those keys.Patch suggestion
@@ - result = cls.validate({"model": model, "temperature": 0.5, **extra}) + result = cls.validate( + {"model": model, "temperature": 0.5, "top_p": 0.9, "top_k": 40, **extra} + ) @@ -def test_vertex_validate_strips_temperature_for_opus_4_7() -> None: - result = VertexAILLMParameters.validate(_vertex_metadata("claude-opus-4-7@20260101")) +def test_vertex_validate_strips_temperature_for_opus_4_7() -> None: + result = VertexAILLMParameters.validate( + { + **_vertex_metadata("claude-opus-4-7@20260101"), + "top_p": 0.9, + "top_k": 40, + } + )Also applies to: 249-251
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@unstract/sdk1/tests/test_sampling_strip.py` around lines 243 - 245, The test is only passing "temperature" into cls.validate so assertions that deprecated sampling keys like "top_p" and "top_k" are stripped are vacuous; update the adapter wiring tests that call cls.validate (the calls that produce the local variable result and then iterate over _DEPRECATED_SAMPLING_PARAMS) to include explicit values for top_p and top_k (e.g., top_p: 0.9, top_k: 50) in the input dict along with temperature so the loop asserting those keys are removed from result is non-vacuous and will catch regressions in the strip wiring.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@unstract/sdk1/tests/test_sampling_strip.py`:
- Around line 243-245: The test is only passing "temperature" into cls.validate
so assertions that deprecated sampling keys like "top_p" and "top_k" are
stripped are vacuous; update the adapter wiring tests that call cls.validate
(the calls that produce the local variable result and then iterate over
_DEPRECATED_SAMPLING_PARAMS) to include explicit values for top_p and top_k
(e.g., top_p: 0.9, top_k: 50) in the input dict along with temperature so the
loop asserting those keys are removed from result is non-vacuous and will catch
regressions in the strip wiring.
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The pre-commit.ci auto-fix moved the closing `"""` to its own line but left the multi-line summary intact, so D205 still flagged three docstrings on test_sampling_strip.py:158/177/234. Rewrite the three as single-line summary + blank + body so D205 actually passes. Also let ruff normalize the import block. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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🧹 Nitpick comments (1)
unstract/sdk1/tests/test_sampling_strip.py (1)
248-250: ⚡ Quick winMake adapter regression assertions non-vacuous for
top_p/top_k.These tests assert all deprecated params are stripped, but only
temperatureis provided.top_pandtop_kchecks can pass even if adapter stripping regresses.Proposed patch
def test_validate_strips_temperature_for_opus_4_7( name: str, cls: type, extra: dict[str, Any] ) -> None: @@ - result = cls.validate({"model": model, "temperature": 0.5, **extra}) + result = cls.validate( + {"model": model, "temperature": 0.5, "top_p": 0.9, "top_k": 40, **extra} + ) for param in _DEPRECATED_SAMPLING_PARAMS: assert param not in result, f"{name}: {param} should be stripped" @@ def test_vertex_validate_strips_temperature_for_opus_4_7() -> None: - result = VertexAILLMParameters.validate(_vertex_metadata("claude-opus-4-7@20260101")) + payload = _vertex_metadata("claude-opus-4-7@20260101") + payload.update({"top_p": 0.9, "top_k": 40}) + result = VertexAILLMParameters.validate(payload) for param in _DEPRECATED_SAMPLING_PARAMS: assert param not in result, f"vertex: {param} should be stripped"Also applies to: 254-256
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@unstract/sdk1/tests/test_sampling_strip.py` around lines 248 - 250, The assertions checking that deprecated sampling params are stripped are vacuous because only "temperature" is passed; update the test calls to pass values for top_p and top_k (e.g., include "top_p": 0.9 and "top_k": 40 in the extra dict) when calling cls.validate so that _DEPRECATED_SAMPLING_PARAMS checks for "top_p" and "top_k" are exercised; apply the same change to the second occurrence (the block at lines 254-256) to make both adapter-regression assertions non-vacuous.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@unstract/sdk1/tests/test_sampling_strip.py`:
- Around line 248-250: The assertions checking that deprecated sampling params
are stripped are vacuous because only "temperature" is passed; update the test
calls to pass values for top_p and top_k (e.g., include "top_p": 0.9 and
"top_k": 40 in the extra dict) when calling cls.validate so that
_DEPRECATED_SAMPLING_PARAMS checks for "top_p" and "top_k" are exercised; apply
the same change to the second occurrence (the block at lines 254-256) to make
both adapter-regression assertions non-vacuous.
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SonarCloud flagged four `== 0.5` checks against temperature reads in test_sampling_strip.py as "Do not perform equality checks with floating point values". Switch to `pytest.approx(0.5)` to match the project convention (test_gemini_adapter.py:42 uses the same form). Reword one trailing comment as a leading comment to keep the assertion under the 90-char line limit. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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LGTM on the sampling-strip fix. The trailing-edge anchor, the model_id fallback, the four-adapter wiring, and the new test suite all address the prior round of review feedback. The one remaining outstanding concern on this PR — greptile-apps P1 (debug breadcrumb fires for every non-Opus-4.7 call because BaseChatCompletionParameters.temperature has Field(default=0.1), so model_dump() always emits it) — is a real, valid point and worth addressing before merge, but it is already posted and does not need duplication from me. Nothing additional to raise.
Greptile flagged that `BaseChatCompletionParameters.temperature` declares `default=0.1`, so Pydantic's `model_dump()` always emits `temperature` — the previous `elif any(p in result for p in _DEPRECATED_SAMPLING_PARAMS)` fired for every routine call through these adapters (claude-3-5-sonnet, claude-opus-4-6, gpt-4o, …), producing log noise that mimicked a failed strip attempt. Replace the guard with `_looks_like_opaque_aip_arn(...)` keyed off the `application-inference-profile` substring — the one concrete case where the model id is genuinely unrecoverable from the string and the upstream will 400 if the underlying foundation model is Opus 4.7+. Add a regression test (`test_strip_does_not_log_when_sampling_params_present_ but_model_not_opaque`) that locks the no-noise invariant for the routine case. The existing test that exercises the breadcrumb path (`test_strip_skipped_when_both_fields_opaque_and_logs_debug`) still passes because both fields hold AIP ARNs. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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What
_has_deprecated_sampling_params(model)and_strip_deprecated_sampling_params(validated)helpers inunstract/sdk1/.../adapters/base1.py. The helpers substring-match the model id againstclaude-opus-4-7(case-insensitive, with./_normalized to-) and poptemperature/top_p/top_kfrom the validated metadata when matched.AnthropicLLMParameters.validate(),AWSBedrockLLMParameters.validate(), andAzureAIFoundryLLMParameters.validate().modelandmodel_id, so Bedrock callers routing through an Application Inference Profile (AIP) are covered when the standard model id appears in either field.Why
Anthropic deprecated
temperature,top_p, andtop_kstarting with Claude Opus 4.7. Sending any of them now returns a 400 from Anthropic and from every provider that proxies it (Bedrock, Azure AI Foundry, Vertex AI). The Azure AI Foundry path is what surfaced first in the connector test:Pydantic's
model_dump()onBaseChatCompletionParametersre-emits the defaulttemperature=0.1even when the caller never set one, so we cannot rely on "don't pass it" — we have to actively pop it after validation.Reference: https://platform.claude.com/docs/en/about-claude/models/whats-new-claude-4-7
How
base1.py:_SAMPLING_DEPRECATED_MODEL_PATTERNS = ("claude-opus-4-7",)and_DEPRECATED_SAMPLING_PARAMS = ("temperature", "top_p", "top_k"). The pattern table is the single point of extension — if Anthropic deprecates sampling on more models later, we add an entry here._has_deprecated_sampling_paramslowercases the input and normalizes.and_separators to-before substring-matching, which covers every encoding of the id we found:claude-opus-4-7,anthropic/claude-opus-4-7anthropic.claude-opus-4-7-<date>-v1:0, with optionalbedrock/converse/.../bedrock/invoke/...route prefixesus.,eu.,apac.,global.variantsvertex_ai/claude-opus-4-7@<date>_strip_deprecated_sampling_paramschecks bothmodelandmodel_id(Bedrock's separate AIP ARN field) and pops the three sampling params if either one matches.AnthropicLLMParameters.validate(),AWSBedrockLLMParameters.validate(),AzureAIFoundryLLMParameters.validate()— return_strip_deprecated_sampling_params(validated)instead ofvalidated.Coverage gap (documented in helper docstring)
Two cases the string-based detector cannot cover:
arn:aws:bedrock:...:application-inference-profile/abcd1234. The string carries no model id. Mitigation: callers should keep the standard model id in eithermodelormodel_id. If both fields hold opaque ARNs, the strip won't fire.claude-opus-4-7. Mitigation: rename the deployment to include the model id, or — if this becomes common — add an explicit UI flag.Can this PR break any existing features. If yes, please list possible items. If no, please explain why. (PS: Admins do not merge the PR without this section filled)
No.
claude-opus-4-7after normalization. Every other Anthropic / Bedrock / Azure AI Foundry model retains itstemperature/top_p/top_kexactly as before — verified by directvalidate()calls againstclaude-3-5-sonnet,claude-opus-4-6,claude-sonnet-4-7,gpt-4o, etc.top_p/top_kare not declared fields on the parameter classes today, so Pydantic was already dropping them silently for non-deprecated models. The defensive pop on the validated dict is a no-op for them in the normal path.Database Migrations
Env Config
Relevant Docs
thinking.budget_tokensalso removed (out of scope here).Related Issues or PRs
Dependencies Versions
Notes on Testing
@-suffixed, Azure deployments, mixed case, dot/underscore separators). All match. Negatives —claude-opus-4-6,claude-sonnet-4-7,claude-haiku-4-5,gpt-4o,gemini-2.0-flash, opaque AIP ARN,None, empty string — all correctly do not match.modelwhen standard id is inmodeland AIP ARN is inmodel_id; confirmed strip viamodel_idwhen AIP ARN is inmodeland standard id is inmodel_id; confirmed limitation when both fields hold opaque ARNs.AnthropicLLMParameters.validate(),AWSBedrockLLMParameters.validate(),AzureAIFoundryLLMParameters.validate()— temperature stripped for Opus 4.7 inputs, retained for older Claude / non-Claude inputs.pytest tests/ --ignore=tests/file_storage --ignore=tests/patches: 221 pass. (The unrelated import error intests/patches/test_litellm_cohere_timeout.pyis pre-existing onmain.)ruff format --checkclean on the modified file.Screenshots
N/A — backend SDK change.
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