add ToolSearchToolset and ToolProxyToolset for dynamic tool discovery#5140
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add ToolSearchToolset and ToolProxyToolset for dynamic tool discovery#5140
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theomonnom
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Apr 13, 2026
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* fix: allow multiple AsyncToolsets by deduplicating management tools (livekit#5369) * feat(beta/workflows): add InstructionParts for modular instruction customization (livekit#5077) * add ToolSearchToolset and ToolProxyToolset for dynamic tool discovery (livekit#5140) * Feature - Configurable session close transcript timeout (livekit#5328) * Fix FrameProcessor lifecycle for selector based noise cancellation (livekit#5433) --------- Co-authored-by: Long Chen <longch1024@gmail.com> Co-authored-by: Benjamin Lowe <ben.lowe.uk@googlemail.com> Co-authored-by: Topherhindman <topher.hindman@livekit.io>
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* upstream/main: (31 commits) chore: reduce renovate noise (livekit#5421) Rename e2ee to encryption in JobContext.connect (livekit#5454) feat: add Runway Characters avatar plugin (livekit#5355) Fix FrameProcessor lifecycle for selector based noise cancellation (livekit#5433) Feature - Configurable session close transcript timeout (livekit#5328) add ToolSearchToolset and ToolProxyToolset for dynamic tool discovery (livekit#5140) feat(beta/workflows): add InstructionParts for modular instruction customization (livekit#5077) fix: allow multiple AsyncToolsets by deduplicating management tools (livekit#5369) fix: empty transcript blocks commit_user_turn until timeout (livekit#5429) Feature/krisp viva sdk support (livekit#4370) feat: add service_tier parameter to Responses API LLM (livekit#5346) fix(inworld): do not leak connections when when cancelled (livekit#5427) update: Sarvam STT - add verbose error loggin and remove retry connection (livekit#5373) chore(deps): update github workflows (major) (livekit#5424) (azure openai): ensure gpt-realtime-1.5 compatibility (livekit#5407) chore(deps): update dependency nltk to v3.9.4 [security] (livekit#5418) chore(deps): update dependency aiohttp to v3.13.4 [security] (livekit#5416) chore(deps): update dependency langchain-core to v1.2.28 [security] (livekit#5417) chore: pin GHA by commit (livekit#5415) fix(aws): unwrap doubly-encoded JSON tool arguments from Nova Sonic (livekit#5411) ...
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When agents have many tools (10+), loading all tool definitions into the LLM context upfront degrades accuracy and wastes tokens. This PR adds two toolsets that enable on-demand tool discovery and loading.
ToolSearchToolset— exposes atool_searchfunction. Matched tools are added directly to the LLM's tool list on the next turn, so the model uses native tool calls. Simpler for the model.ToolProxyToolset— exposes exactly two fixed tools:tool_search(returns schemas) andcall_tool(executes by name). The tool list remains unchanged, preserving prompt cache across turns for providers like OpenAI and Anthropic.Both support:
need to merge #5138 first
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