{ "_note": "kb#128 (A2A-16): human-readable source of truth for the auto_router route set. NOT loaded from this path at runtime -- litellm-config.yaml's `auto_router` deployment inlines this same `routes` array as a literal JSON string via litellm_params.auto_router_config. Reason (verified hands-on 2026-07-26 against litellm:main-latest): the auto_router_config_path loader (AutoRouter._load_semantic_routing_routes -> SemanticRouter.from_json) unconditionally builds a raw semantic_router encoder from encoder_type/encoder_name and requires a real provider API key even for a local model name like bge-m3 -- this IS the open Auto Router v2 embedding bug the task brief warned about. The auto_router_config (inline-string) loader (_load_auto_router_routes_from_config_json) only reads the `routes` key and builds Route objects directly, with zero encoder bootstrap -- confirmed working end-to-end: real litellm.embedding(model=ollama/bge-m3) calls, zero metered API spend, 'hi there' -> ollama/gemma3:4b, a refactor/dependency-injection prompt -> kimi-agent. Keep the two `routes` arrays in sync by hand when editing either.", "encoder_type": "litellm", "encoder_name": "bge-m3", "routes": [ { "name": "ollama/gemma3:4b", "description": "Simple, short, low-stakes requests — greetings, quick factual lookups, formatting, one-line questions.", "utterances": [ "hi", "hello", "what time is it", "what's the weather", "thanks", "what does this word mean", "summarize this in one sentence", "give me a quick yes or no", "format this as a list", "what is 2 plus 2" ], "score_threshold": 0.5 }, { "name": "kimi-agent", "description": "Complex reasoning, multi-step planning, coding, or anything needing tool use and deep context.", "utterances": [ "write a function that parses this log file and extracts errors", "refactor this class to use dependency injection", "think through the tradeoffs of these two architectures step by step", "debug why this docker container keeps crashing", "plan out the migration from cognee to hindsight across five tasks", "analyze this design document and find inconsistencies", "write a SQL query that joins these three tables and aggregates by month", "review this pull request for security issues" ], "score_threshold": 0.5 } ] }