Get complexity analyzer config

Returns the full complexity analyzer runtime config, including the semantic embedding configuration, the llm fallback classifier configuration, and per-tier reference phrase lists. Returns built-in defaults if none have been configured.

GET /api/routing/complexity-analyzer-config

Error

A valid request URL is required to generate request examples

200

{
  "keywords": {
    "simple_keywords": [
      "<string>"
    ],
    "medium_keywords": [
      "<string>"
    ],
    "complex_keywords": [
      "<string>"
    ]
  },
  "tier_boundaries": {
    "simple_medium": 123,
    "medium_complex": 123
  },
  "semantic": {
    "provider": "<string>",
    "embedding_model": "<string>",
    "timeout": "<string>",
    "min_similarity": 1,
    "message_history_count": 5,
    "count_toward_budgets": true,
    "vector_store": "embedded",
    "fallback": "none"
  },
  "llm": {
    "provider": "<string>",
    "model": "<string>",
    "timeout": "<string>",
    "prompt": "<string>",
    "message_history_count": 5,
    "count_toward_budgets": true
  },
  "session": {
    "enabled": true
  }
}

Authorizations

ManagementBearerAuthBasicAuth

Authorization · string · header · required

Management API authentication for /api/* endpoints. Use the Authorization header with Bearer <token>, where <token> is one of:

• a Bifrost management API key,
• a dashboard session token issued by POST /api/session/login,
• base64 of <admin-username>:<admin-password> (legacy equivalent of BasicAuth).

Virtual keys (sk-bf-*) and the x-api-key header are not accepted on management APIs - the sole exception is GET /api/governance/virtual-keys/quota, which is virtual-key-only.

Response

200

application/json

Complexity analyzer config retrieved successfully

Full runtime configuration for complexity routing analysis.

keywords · object · required

Reference phrases for semantic complexity classification, one list per tier. Each request is embedded and takes the tier of its nearest phrase. Entries should be whole example prompts rather than individual keywords. Each phrase is limited to 2000 characters, the normalized lists may contain at most 750 phrases combined, and the same phrase cannot appear in two tiers. The field names predate semantic classification and are kept for backward compatibility.

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tier_boundaries · object · deprecated

Deprecated score thresholds for the retired lexical complexity classifier. This block is optional and ignored by semantic classification, but remains accepted for backward compatibility. When supplied, values must satisfy 0 < simple_medium < medium_complex < 1.

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semantic · object

Embedding configuration for semantic complexity classification. When absent, no complexity tier is published and rules referencing complexity_tier fall through. The provider must have an enabled key.

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llm · object

Chat-completion (LLM) fallback classifier settings. The block is inert unless semantic.fallback selects llm; the classifier runs only after semantic classification produces no tier. Tier names (SIMPLE, MEDIUM, COMPLEX) and the response format are fixed: the gateway always appends a non-editable reinforcement stating them.

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session · object

Session-aware complexity routing. When enabled and a request carries a supported session identity, Bifrost retains the highest tier observed across normally sequential turns for 24 hours of inactivity. Overlapping requests for the same session are best-effort and resolve by last writer wins.

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