docs(roadmap): file /responses tool-schema compatibility bug as #33

Author: Jobdori

ROADMAP.md

@@ -500,3 +500,5 @@ Model name prefix now wins unconditionally over env-var presence. Regression tes
 33. **OpenAI `/responses` endpoint rejects claw's tool schema: `object schema missing properties` / `invalid_function_parameters`** — dogfooded 2026-04-08 via live user in #claw-code. Repro: startup succeeds, provider routing succeeds (`Connected: gpt-5.4 via openai`), but request fails when claw sends tool/function schema to a `/responses`-compatible OpenAI backend. Backend rejects `StructuredOutput` with `object schema missing properties` and `invalid_function_parameters`. This is distinct from the `#32` model-id passthrough issue — routing and transport work correctly. The failure is at the schema validation layer: claw's tool schema is acceptable for `/chat/completions` but not strict enough for `/responses` endpoint validation. **Sharp next check:** emit what schema claw sends for `StructuredOutput` tool functions, compare against OpenAI `/responses` spec for strict JSON schema validation (required `properties` object, `additionalProperties: false`, etc). Likely fix: add missing `properties: {}` on object types, ensure `additionalProperties: false` is present on all object schemas in the function tool JSON. **Source:** live user in #claw-code 2026-04-08 with `gpt-5.4` on OpenAI-compat backend.
 
 33. **OpenAI `/responses` endpoint rejects claw's tool schema: `object schema missing properties` / `invalid_function_parameters`** — dogfooded 2026-04-08 via live user in #claw-code. Repro: startup succeeds, provider routing succeeds (`Connected: gpt-5.4 via openai`), but request fails when claw sends tool/function schema to a `/responses`-compatible OpenAI backend. Backend rejects `StructuredOutput` with `object schema missing properties` and `invalid_function_parameters`. This is distinct from the `#32` model-id passthrough issue — routing and transport work correctly. The failure is at the schema validation layer: claw's tool schema is acceptable for `/chat/completions` but not strict enough for `/responses` endpoint validation. **Sharp next check:** emit what schema claw sends for `StructuredOutput` tool functions, compare against OpenAI `/responses` spec for strict JSON schema validation (required `properties` object, `additionalProperties: false`, etc). Likely fix: add missing `properties: {}` on object types, ensure `additionalProperties: false` is present on all object schemas in the function tool JSON. **Source:** live user in #claw-code 2026-04-08 with `gpt-5.4` on OpenAI-compat backend.
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+33. **OpenAI `/responses` endpoint rejects claw's tool schema: `object schema missing properties` / `invalid_function_parameters`** — dogfooded 2026-04-08 via live user in #claw-code. Repro: startup succeeds, provider routing succeeds (`Connected: gpt-5.4 via openai`), but request fails when claw sends tool/function schema to a `/responses`-compatible OpenAI backend. Backend rejects `StructuredOutput` with `object schema missing properties` and `invalid_function_parameters`. This is distinct from the `#32` model-id passthrough issue — routing and transport work correctly. The failure is at the schema validation layer: claw's tool schema is acceptable for `/chat/completions` but not strict enough for `/responses` endpoint validation. **Sharp next check:** emit what schema claw sends for `StructuredOutput` tool functions, compare against OpenAI `/responses` spec for strict JSON schema validation (required `properties` object, `additionalProperties: false`, etc). Likely fix: add missing `properties: {}` on object types, ensure `additionalProperties: false` is present on all object schemas in the function tool JSON. **Source:** live user in #claw-code 2026-04-08 with `gpt-5.4` on OpenAI-compat backend.