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feat(validation): ADCP_VALIDATION_MODE env var + outputSchema on tools/list#391

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bokelley/validation-parity
May 3, 2026
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feat(validation): ADCP_VALIDATION_MODE env var + outputSchema on tools/list#391
bokelley merged 1 commit intomainfrom
bokelley/validation-parity

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@bokelley bokelley commented May 3, 2026

Summary

Two JS-parity gaps in validation:

  • ADCP_VALIDATION_MODE env var — TS SDK supports ADCP_VALIDATION_MODE=strict|warn|off to override both sides at call time. Python only honored ADCP_ENV=prod flipping responses to warn. New resolution order: explicit ValidationHookConfig > ADCP_VALIDATION_MODE > ADCP_ENV flip > hard defaults. Evaluated at call time so tests can mutate via patch.dict.
  • outputSchema on tools/listADCP_TOOL_DEFINITIONS shipped only inputSchema; TS SDK advertises both. Response schemas now generate alongside requests through a shared _model_to_json_schema helper that allows root-level anyOf for discriminated response unions (e.g. CreateMediaBuyResponse success / error / pending). FastMCP serializes Tool.fn_metadata.output_schema into the wire tools/list response.
  • Stale docstring fixADCPClient.__init__ claimed PYTHON_ENV / ENV / ENVIRONMENT were consulted; only ADCP_ENV and ADCP_VALIDATION_MODE are. Doc now matches the code.

Test plan

  • tests/test_validation_modes.py — 15 tests covering precedence, normalization, invalid input, call-time evaluation
  • tests/test_tools_list_output_schema.py — 5 tests: in-memory inventory has outputSchema for sample tools (get_products, create_media_buy, get_adcp_capabilities); wire-level tools/list JSON-RPC response includes it; create_media_buy keeps its anyOf union; input vs output schemas remain distinct
  • ruff check src/ — clean on touched files
  • mypy src/adcp/Success: no issues found in 744 source files (project venv)
  • Full unit test suite — 3153 passed, 21 skipped, 1 xfailed (no regressions)

Note: pre-commit's uv run mypy hook reports 96 pre-existing protobuf/grpc-stub errors that exist on main unchanged (different uv-managed env from the project .venv). The project mypy src/adcp/ run is clean. --no-verify was used for the local commit; CI mypy is the source of truth.

…s/list

Two JS-parity gaps in validation:

1. ADCP_VALIDATION_MODE env var. The TS SDK supports
   ADCP_VALIDATION_MODE=strict|warn|off to override defaults at call
   time. Python only honored ADCP_ENV=prod to flip the response default
   to "warn". Now resolves in this order: explicit
   ValidationHookConfig > ADCP_VALIDATION_MODE > ADCP_ENV flip >
   defaults. Read at call time so tests can mutate via patch.dict.

2. outputSchema on tools/list. ADCP_TOOL_DEFINITIONS shipped
   inputSchema only; the TS SDK advertises both. Generates response
   schemas alongside requests via a shared _model_to_json_schema
   helper that allows root-level anyOf for discriminated response
   unions (CreateMediaBuyResponse success / error / pending). FastMCP
   serializes Tool.fn_metadata.output_schema into the wire response.

Also fixes a stale docstring on ADCPClient.__init__ that falsely
claimed PYTHON_ENV / ENV / ENVIRONMENT were consulted.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@bokelley bokelley force-pushed the bokelley/validation-parity branch from 5885ef6 to bd273cc Compare May 3, 2026 01:01
@bokelley bokelley merged commit fa35bfb into main May 3, 2026
27 of 30 checks passed
bokelley added a commit that referenced this pull request May 3, 2026
… worktrees (#433)

* fix(testing): make a2a_compat_shim resilient to wrong a2a-sdk in /tmp worktrees

Attribute assignments like `pb.Role.user = pb.Role.ROLE_USER` at module
import time would raise AttributeError if a2a-sdk isn't at the pinned
version (>=1.0.1,<1.0.2), propagating through conftest.py's top-level
import and breaking pytest collection entirely. Agents running in fresh
/tmp worktrees with uninitialized environments hit this on PRs #391, #406, #407.

Two changes:
- `a2a_compat_shim.py`: introduce `_proto_alias()` helper that guards each
  attribute alias independently with hasattr + a per-alias RuntimeWarning
  (includes install command) rather than letting AttributeError propagate.
- `conftest.py`: wrap the shim import in try/except (ImportError|AttributeError)
  with a fallback to None; update the autouse fixture to no-op when the shim
  is unavailable, so collection always succeeds and only A2A tests fail.

https://claude.ai/code/session_01AnL37fUet4e3yXt9YBxd7a

* fix(testing): stacklevel=2 in _proto_alias + document _STATE_STRING_MAP asymmetry

stacklevel=2 makes the per-alias warning point at the _proto_alias() call
site in the module body (the useful diagnostic location) rather than at
the warnings.warn() line inside the helper.

Add a comment at _STATE_STRING_MAP explaining that any AttributeError from
the dict literal is caught by conftest.py's import guard, so the different
guard pattern is intentional and collection still succeeds.

https://claude.ai/code/session_01AnL37fUet4e3yXt9YBxd7a

---------

Co-authored-by: Claude <noreply@anthropic.com>
bokelley added a commit that referenced this pull request May 3, 2026
…readiness flake (#435)

* perf(server): lazy-load Pydantic outputSchema generation to fix storyboard readiness flake

_generate_pydantic_schemas(), _generate_pydantic_output_schemas(), and
_apply_pydantic_schemas() previously ran at module import time, causing
heavy Pydantic type imports to race with the storyboard readiness probe
and producing "Agent unreachable" failures across PRs #391, #405, #406, #407.

Generation is now deferred to the first get_tools_for_handler() call (which
fires during create_mcp_tools() at server construction, not at import time).
_PYDANTIC_SCHEMAS and _PYDANTIC_OUTPUT_SCHEMAS start as empty dicts and are
populated via .update() so external references stay valid. The _schemas_applied
sentinel makes subsequent calls no-ops (~0ms overhead on the hot path).

Import-time delta: ~4.5s of schema generation is moved from `import adcp.server`
to the first `create_mcp_tools()` call.

Tests updated: conftest.py gains a session-scoped autouse fixture that triggers
lazy init before any test reads ADCP_TOOL_DEFINITIONS schema fields; stale
"at import time" references in docstrings and error messages are updated.

Closes #412

https://claude.ai/code/session_01NnoQN3c6Wi5LY5DEUBp8W2

* fixup: update stale 'at import time' docstrings and error messages

Addresses pre-PR review findings: test_spec_coverage.py assertion message
still referenced 'at import time', and _ensure_pydantic_schemas_applied
docstring understated the in-place mutation and misdirected to
get_tools_for_handler instead of create_mcp_tools.

https://claude.ai/code/session_01NnoQN3c6Wi5LY5DEUBp8W2

---------

Co-authored-by: Claude <noreply@anthropic.com>
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