> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nasiko.com/llms.txt
> Use this file to discover all available pages before exploring further.

# List every configured tier→model mapping, ordered by provider and tier.



## OpenAPI

````yaml /api-reference/openapi.json get /api/model-registry
openapi: 3.1.0
info:
  title: Nasiko API
  description: >-
    HTTP API for the Nasiko OpenRuntime: agents, coding harnesses, TokenOps,
    routing, MCP, and secrets. Spec is generated from annotated routes; some
    surfaces are documented on the hand-written pages alongside this file.
  license:
    name: ''
  version: 0.1.0
servers: []
security: []
tags:
  - name: secrets
    description: Encrypted per-user agent secrets
  - name: catalog
    description: >-
      Agent catalog: registration, discovery, versions, per-agent secrets, and
      source import
  - name: agents
    description: >-
      Agent lifecycle: deployments, LLM routing config, update/rollback,
      upload-and-deploy
  - name: orchestrator
    description: >-
      A2A dispatch: routing-engine/ReAct orchestrator and direct agent chat,
      plus routing stats
  - name: users
    description: >-
      User management: CRUD, roles, credentials, accessible agents
      (superuser-only)
  - name: usage
    description: Per-user token usage and cost reporting
  - name: observability
    description: Sessions, traces, spans, agent logs, and FinOps reporting
  - name: llm-router
    description: LLM routing presets, provider/model catalog, and tier→model registry
  - name: mcp
    description: >-
      MCP gateway: agent-facing JSON-RPC tool calls, connector
      registration/upload/sharing, credentials & OAuth, and per-agent tool
      permissions
paths:
  /api/model-registry:
    get:
      tags:
        - llm-router
      summary: List every configured tier→model mapping, ordered by provider and tier.
      operationId: list_mappings
      responses:
        '200':
          description: All configured mappings
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ModelMappingListEnvelope'
        '401':
          description: Missing or invalid session
components:
  schemas:
    ModelMappingListEnvelope:
      type: object
      description: >-
        `crate::mcp::ApiResponse` envelope around a list of [`ModelMapping`]
        rows.
      required:
        - data
        - status_code
        - message
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/ModelMapping'
        message:
          type: string
        status_code:
          type: integer
          format: int32
          minimum: 0
    ModelMapping:
      type: object
      description: A single `(provider, tier)` → model row.
      required:
        - provider
        - tier
        - model
      properties:
        model:
          type: string
        provider:
          type: string
        tier:
          type: integer
          format: int32
          description: 'Model strength tier: 1 = strongest … 3 = smallest.'

````