Mazen Tamer Salah b51d83b16d fix(agent): index api_call so RAG tool selection can retrieve it (#3923) ...

* fix(agent): index api_call so RAG tool selection can retrieve it

api_call exists in FUNCTION_TOOL_SCHEMAS and the agent's system prompt
advertises configured API integrations, but the tool had no entry in
BUILTIN_TOOL_DESCRIPTIONS. RAG tool selection embeds those descriptions and
retrieves the top-K per message, so a tool without one can never be selected:
the agent claims it can call Home Assistant/Miniflux/Gitea/etc. and then
never receives the api_call schema (unless the Personal Assistant
ASSISTANT_ALWAYS_AVAILABLE path applies).

Add a retrieval-rich description for api_call, plus an ast-based parity test
asserting every FUNCTION_TOOL_SCHEMAS tool has an index description so the
next added tool cannot silently drift the same way.

Fixes #3794

* fix(agent): route API-integration intent to api_call at selection time

Addresses review (RaresKeY) on #3923: indexing api_call in the ToolIndex
description was necessary but not sufficient — the #3794 repro ('Use the
api_call tool to call Home Assistant GET /api/states') matched no domain in
_classify_agent_request, classified as low-signal, so the agent loop skipped
retrieval entirely and the schema filter sent only ALWAYS_AVAILABLE
(manage_memory/ask_user/update_plan). api_call never reached the model.

- _classify_agent_request: detect API-integration intent (api_call,
  integration(s), Home Assistant/Miniflux/Gitea/Linkding/Jellyfin) -> new
  'integrations' domain, so the turn is no longer low-signal.
- _DOMAIN_TOOL_MAP['integrations'] = {api_call}: deterministically seeds
  api_call into relevant tools after retrieval, independent of embeddings.
- _DOMAIN_RULES['integrations']: rule pack (required — _domain_rules_for_tools
  indexes _DOMAIN_RULES[domain] directly).
- tool_index _KEYWORD_HINTS: parity hint for the retrieval / keyword-fallback
  paths.
- Regression drives the real classifier -> domain-map -> FUNCTION_TOOL_SCHEMAS
  filter chain and asserts api_call is advertised for the #3794 prompt.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-18 08:43:25 +00:00

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