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3ee3394907
Deferred MCP/plugin tools become invisible once the tool_search bridge activates — live benchmarking (48 runs, Claude Haiku 4.5) showed models substituting visible core tools (terminal/web_search/browser) for deferred capabilities or declaring them nonexistent instead of searching: 16/24 task success vs 24/24 with eager loading. Skills never had this failure mode because every skill keeps a ~21-token name+description listing line in the system prompt. This ports that exact pattern to the tool bridge: when tool_search activates, a grouped manifest of every deferred tool (name + first sentence of description, clipped to 60 chars, grouped per MCP server / toolset) is embedded in the tool_search bridge description. - tools/tool_search.py: build_catalog_listing() with deterministic ordering (byte-stable across assemblies -> prompt prefix stays cacheable); token-budget fallbacks full -> names-only -> legacy bare count; bridge_tool_schemas(listing=...) embeds it and instructs the model to skip tool_search when the exact name is visible (one fewer round-trip per use) - config: tools.tool_search.listing auto|on|off (default auto), listing_max_tokens (default 4000, clamped 200..20000); legacy bool shapes keep working - tests: 8 new tests (config parsing/clamps, short-desc clipping, deterministic rendering, budget fallbacks, bridge embedding, assembly on/off paths); full file green (47 passed) - docs: tool-search.md config table + rationale - scripts/tool_search_livetest2.py: benchmark harness v2 with real per-call token accounting (normalize_usage spy) and a third 'listing' mode for A/B/C comparison |
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| reference | ||
| user-guide | ||
| index.mdx | ||
| user-stories.mdx | ||