> ## Documentation Index > Fetch the complete documentation index at: https://docs.protodesk.io/llms.txt > Use this file to discover all available pages before exploring further. # Link a channel identity to a customer > API-created identities default verified=false. Passing verified=true asserts your system authenticated the identity (recorded with verifiedAt) and allows it to auto-merge. A (channel, identifier) already claimed by another customer returns 409 with the owning customerId. ## OpenAPI ````yaml POST /customers/{customerId}/identities openapi: 3.1.0 info: title: Protodesk API version: 0.1.0 description: > The Protodesk Platform API: sync your customers in, attach your own business objects (orders, bookings, listings) to conversations, post and read messages across channels, and receive every workspace event via signed webhooks or a resumable SSE stream. Authenticate every request with a workspace-scoped API key: `Authorization: Bearer pk_live_...`. Create endpoints accept an `Idempotency-Key` header so retries are always safe. Lists use opaque cursor pagination (`data` / `hasMore` / `nextCursor`). Task-oriented guides: [docs.protodesk.io](https://docs.protodesk.io). servers: - url: https://api.protodesk.io/v1 description: Production - url: http://localhost:8080/v1 description: Local development security: [] tags: - name: Customers description: People or companies contacting a workspace across channels. - name: Conversations description: Customer conversations attached to channels and external business objects. - name: Messages description: Customer, agent, AI, system, and internal messages inside conversations. - name: Channel identities description: >- The same customer across WhatsApp, email, chat, and more — linked identities per channel. - name: Statuses & priorities description: The workspace's conversation statuses and priority levels. - name: Assignments description: >- Who a conversation has been assigned to, over time. Assign via POST /conversations/{conversationId}/assign. - name: Webhooks description: Webhook subscriptions for receiving workspace events. - name: Realtime description: Server-sent event stream of workspace events. - name: API Keys description: Create, list, and revoke workspace API keys. - name: Account description: The workspace and scopes behind your API key. - name: System description: Service metadata and health endpoints. paths: /customers/{customerId}/identities: parameters: - name: customerId in: path required: true schema: type: string post: tags: - Channel identities summary: Link a channel identity to a customer description: > API-created identities default verified=false. Passing verified=true asserts your system authenticated the identity (recorded with verifiedAt) and allows it to auto-merge. A (channel, identifier) already claimed by another customer returns 409 with the owning customerId. operationId: createIdentity requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CreateIdentityRequest' responses: '201': description: Created channel identity. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/ChannelIdentity' '409': description: The identity is already claimed by another customer. headers: X-Request-Id: $ref: '#/components/headers/RequestId' content: application/json: schema: $ref: '#/components/schemas/IdentityConflict' default: $ref: '#/components/responses/Error' security: - ApiKeyAuth: [] components: schemas: CreateIdentityRequest: type: object required: - channel - identifier properties: channel: type: string description: >- Channel the identity belongs to (open string, e.g. whatsapp, slack, email). example: whatsapp identifier: type: string description: The identity value on that channel. example: '+628123456789' verified: type: boolean default: false description: > True asserts your system authenticated this identity, allowing auto-merge. Recorded with verifiedAt. claimedEmail: type: string description: >- A claimed (unverified) email; display and merge-suggestion input only. displayName: type: string avatarUrl: type: string primary: type: boolean default: false ChannelIdentity: type: object required: - id - customerId - channel - identifier - verified - primary - createdAt - updatedAt properties: id: type: string example: cid_x6q5vl75f5d53m7oet2k4r5w6a customerId: type: string channel: type: string example: whatsapp identifier: type: string example: '+628123456789' verified: type: boolean verifiedAt: type: string format: date-time nullable: true claimedEmail: type: - string - 'null' displayName: type: - string - 'null' avatarUrl: type: - string - 'null' lastActiveAt: type: string format: date-time nullable: true primary: type: boolean createdAt: type: string format: date-time updatedAt: type: string format: date-time IdentityConflict: type: object description: > Returned with 409 when a (channel, identifier) is already claimed. The owning customerId is workspace-scoped, so it is safe to return. required: - error - customerId properties: error: $ref: '#/components/schemas/Error' customerId: type: string example: cus_x6q5vl75f5d53m7oet2k4r5w6a Error: type: object required: - code - message - requestId properties: code: type: string example: route.not_found message: type: string example: Not found requestId: type: string example: req_x6q5vl75f5d53m7oet2k4r5w6a ErrorEnvelope: type: object required: - error properties: error: $ref: '#/components/schemas/Error' headers: RequestId: description: Request id for tracing this request in logs and support. schema: type: string example: req_x6q5vl75f5d53m7oet2k4r5w6a RateLimitLimit: description: >- Request budget for the route class (read or write) applied to this request. schema: type: integer example: 40 RateLimitRemaining: description: Requests remaining in the current budget after this request. schema: type: integer example: 39 RateLimitReset: description: Seconds until the budget refills to its full limit. schema: type: integer example: 1 RetryAfter: description: Seconds to wait before retrying, sent with 429 responses. schema: type: integer example: 1 responses: Error: description: >- Error response. All /v1 responses carry RateLimit-Limit, RateLimit-Remaining, and RateLimit-Reset headers. A 429 (rate_limit.exceeded) additionally carries Retry-After. Request bodies exceeding the route-class limit (1KB reads, 64KB writes) return 413 (request.body_too_large). headers: X-Request-Id: $ref: '#/components/headers/RequestId' RateLimit-Limit: $ref: '#/components/headers/RateLimitLimit' RateLimit-Remaining: $ref: '#/components/headers/RateLimitRemaining' RateLimit-Reset: $ref: '#/components/headers/RateLimitReset' Retry-After: $ref: '#/components/headers/RetryAfter' content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: Protodesk API key description: > Use a workspace API key in the Authorization header. Keys use pk_live__ for production and pk_test__ for test mode. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.