Agentic Control Plane Delegation API

openapi: 3.2.0
info:
  title: Agentic Control Plane — Gateway Delegation API
  version: 0.1.0
  description: 'The public, gsk_-key-authenticated surface of the ACP gateway: agent profiles, run summaries,

    self-introspection (cost / usage / decisions / traces), delegation-chain child-key minting,

    scoped-token issuance, the governed model proxy, and the MCP endpoint.


    **Rate limits.** Rate-limited endpoints return IETF draft-7 `RateLimit` / `RateLimit-Policy`

    headers on every response and a 429 with the same headers when exceeded.


    **Errors.** Three envelopes coexist and are documented per-endpoint: `{ error: string }` on

    /api/v1/*, `{ error: ''validation_failed'', details }` on schema-validated bodies, and the

    OpenAI-compatible `{ error: { message, type, param, code } }` on the model proxy.


    **Feature-flagged surfaces.** `/api/v1/keys/child`, `/api/v1/scoped-tokens`, and

    `/v1/sandbox-tenants` are deployment-flagged; when disabled they 404.


    Human docs: https://agenticcontrolplane.com/agents/configure-as-code — agent-facing site

    index: https://agenticcontrolplane.com/llms.txt'
  contact:
    name: Agentic Control Plane
    email: hello@agenticcontrolplane.com
    url: https://agenticcontrolplane.com/contact
servers:
- url: https://api.agenticcontrolplane.com
security:
- ApiKeyAuth: []
tags:
- name: delegation
  description: 'Agent-to-agent delegation: scope-narrowed child API keys (ADCS).'
paths:
  /api/v1/keys/child:
    post:
      tags:
      - delegation
      operationId: mintChildKey
      summary: Mint a scope-narrowed child API key
      description: 'The delegation-chain primitive (ADCS): a parent key mints a child key bound to a delegatable agent profile. Scopes intersect with the parent''s, budget clamps to the parent''s remaining, TTL caps at 24h, `originSub` is preserved for end-to-end audit. Feature-flagged; 404 when disabled. Rate limited per tenant.'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - profileId
              properties:
                profileId:
                  type: string
                  description: Delegatable agent profile the child is bound to.
                scopes:
                  type: array
                  items:
                    type: string
                  description: Optional further narrowing; cannot widen beyond the parent.
                maxBudgetCents:
                  type: integer
                  minimum: 0
                  maximum: 1000000
                ttlSeconds:
                  type: integer
                  minimum: 60
                  maximum: 86400
                  default: 3600
                reason:
                  type: string
                  maxLength: 200
                  description: Free-text audit label.
              additionalProperties: false
      responses:
        '200':
          description: The child key (returned once).
          content:
            application/json:
              schema:
                type: object
                properties:
                  ok:
                    type: boolean
                additionalProperties: true
        '400':
          description: Validation failed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationError'
        '401':
          description: Missing, malformed, invalid, or revoked gsk_ API key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Profile not delegatable.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Profile not found / feature disabled.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Delegation cycle detected.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: Rate limited. Standard draft-7 RateLimit / RateLimit-Policy headers are set; retry after the window resets.
          headers:
            RateLimit:
              schema:
                type: string
              description: IETF draft-7 rate-limit header.
            RateLimit-Policy:
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Server error.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      description: 'Default error shape on /api/v1/*: a single machine-readable-ish message string.'
      required:
      - error
      properties:
        error:
          type: string
    ValidationError:
      type: object
      description: Returned (HTTP 400) when a zod-validated body or query fails. `details` is the zod treeified error.
      required:
      - error
      properties:
        error:
          type: string
          enum:
          - validation_failed
        details:
          type: object
          additionalProperties: true
  securitySchemes:
    ApiKeyAuth:
      type: http
      scheme: bearer
      description: 'Workspace API key (`gsk_{slug}_…`) as a Bearer token. Mint keys in the console: https://cloud.agenticcontrolplane.com'