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OpenAPI Specification

openapi: 3.2.0
info:
  title: AnchorID Links API
  version: 1.0.0
  description: 'Anchord''s multi-tenant identity resolution + safe-write gate (v1). Read-only — never writes back to external systems. Guard/write endpoints are evaluation-only: they return a decision, the caller executes.'
servers:
- url: https://api.anchord.ai/api
  description: Production
- url: https://staging.api.anchord.ai/api
  description: Staging (testing environment)
security:
- bearerAuth: []
tags:
- name: Links
paths:
  /v1/entities/{entity_id}/links:
    post:
      tags:
      - Links
      summary: Link a source record to an entity
      description: Returns 201 on new link, 200 on idempotent re-link. Returns 409 ENTITY_MERGED if the entity has been merged.
      parameters:
      - $ref: '#/components/parameters/EntityId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - source_record_id
              properties:
                source_record_id:
                  type: string
                  format: uuid
                confidence:
                  type: number
                  minimum: 0
                  maximum: 1
                  description: Default 0 if omitted.
                linked_by:
                  $ref: '#/components/schemas/LinkSource'
                  description: Default "manual" if omitted.
      responses:
        '200':
          description: Idempotent (link already exists or reactivated).
          content:
            application/json:
              schema:
                type: object
                required:
                - link
                - request_id
                properties:
                  link:
                    $ref: '#/components/schemas/Link'
                  request_id:
                    type: string
        '201':
          description: New link created.
          content:
            application/json:
              schema:
                type: object
                required:
                - link
                - request_id
                properties:
                  link:
                    $ref: '#/components/schemas/Link'
                  request_id:
                    type: string
        '404':
          description: Entity or source record not found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '409':
          description: Entity has been merged.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      code:
                        type: string
                        enum:
                        - ENTITY_MERGED
                      canonical_entity_id:
                        type: string
                        format: uuid
                      message:
                        type: string
                  request_id:
                    type: string
      operationId: postV1EntitiesByEntityIdLinks
      x-operation-id-source: derived
    delete:
      tags:
      - Links
      summary: Unlink a source record from an entity
      description: Soft-deletes the link (sets unlinked_at). Returns the updated link object. Returns 409 ENTITY_MERGED if the entity has been merged.
      parameters:
      - $ref: '#/components/parameters/EntityId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - source_record_id
              properties:
                source_record_id:
                  type: string
                  format: uuid
      responses:
        '200':
          description: Link removed or did not exist.
          content:
            application/json:
              schema:
                type: object
                properties:
                  link:
                    $ref: '#/components/schemas/Link'
                  message:
                    type: string
                  request_id:
                    type: string
        '404':
          description: Entity not found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '409':
          description: Entity has been merged.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: object
                    properties:
                      code:
                        type: string
                        enum:
                        - ENTITY_MERGED
                      canonical_entity_id:
                        type: string
                        format: uuid
                      message:
                        type: string
                  request_id:
                    type: string
      operationId: deleteV1EntitiesByEntityIdLinks
      x-operation-id-source: derived
components:
  schemas:
    ErrorResponse:
      type: object
      required:
      - error
      - request_id
      properties:
        error:
          type: object
          required:
          - code
          - message
          properties:
            code:
              type: string
            message:
              type: string
            details:
              type: object
              additionalProperties: true
        request_id:
          type: string
    Link:
      type: object
      properties:
        id:
          type: string
          format: uuid
        entity_id:
          type: string
          format: uuid
        source_record_id:
          type: string
          format: uuid
        confidence:
          type: number
          nullable: true
        linked_by:
          $ref: '#/components/schemas/LinkSource'
        linked_at:
          type: string
          format: date-time
          nullable: true
        unlinked_at:
          type: string
          format: date-time
          nullable: true
    LinkSource:
      type: string
      enum:
      - resolution
      - auto_resolve
      - reconcile
      - manual
      - merge
      - api
      - manual_review
      description: 'How a source record was linked to an entity (provenance). resolution = query-time resolve, auto_resolve = post-ingest exact match, reconcile = deferred fuzzy reconciliation, manual = user action, merge = entity merge/dedup, api = public link API, manual_review = review confirm.

        '
  parameters:
    EntityId:
      name: entity_id
      in: path
      required: true
      schema:
        type: string
        format: uuid
      description: Canonical entity id (UUID).
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer