feat: add sandbox callback verifier#2849
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Ramon Nogueira (ramon-langchain) wants to merge 4 commits into
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feat: add sandbox callback verifier#2849Ramon Nogueira (ramon-langchain) wants to merge 4 commits into
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Summary
Adds a Python SDK verifier for JWKS-signed LangSmith sandbox callback requests. The verifier resolves the LangSmith API URL and API key using normal SDK defaults, fetches and caches JWKS internally, fetches and caches the tenant ID when not supplied, and validates the JWT against the exact raw callback body.
The returned claims expose
identity, parsed from the signed body hash, including tenant ID, organization ID, sandbox ID, and optional LangSmith user ID. The verifier requires an expected sandbox ID unless callers explicitly opt intounsafely_allow_any_sandbox_id=True.Related PR:
Release Note
Add a sandbox callback verifier utility for Python applications receiving signed LangSmith sandbox callbacks.
Test Plan
uv run ruff format langsmith/sandbox/_callback_verifier.py langsmith/sandbox/__init__.py tests/unit_tests/sandbox/test_callback_verifier.pyuv run ruff check langsmith/sandbox/_callback_verifier.py tests/unit_tests/sandbox/test_callback_verifier.py langsmith/sandbox/__init__.py --fixuv run mypy langsmith/sandbox/_callback_verifier.pyTEST=tests/unit_tests/sandbox/test_callback_verifier.py make tests