{"openapi":"3.1.0","info":{"title":"POST /api/v1/invitations/{token}/accept","version":"1.0.0","description":"Accept a pending invitation"},"servers":[{"url":"https://api.ondayzero.com","description":"Production"}],"paths":{"/api/v1/invitations/{token}/accept":{"post":{"tags":["invitations"],"summary":"Accept a pending invitation","description":"Process a pending invitation for the authenticated user. Adds the user to the firm (and grants business access for client invitations) then marks the invitation as accepted. Idempotent: returns success if already accepted.","operationId":"accept_invitation","parameters":[{"name":"token","in":"path","required":true,"schema":{"type":"string","title":"Token"}},{"name":"authorization","in":"header","required":false,"schema":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Authorization"}}],"responses":{"201":{"description":"Successful Response","content":{"application/json":{"schema":{"$ref":"#/components/schemas/SuccessEnvelope_AcceptInvitationResponse_"}}}},"400":{"description":"Bad Request - Invalid input","content":{"application/json":{"example":{"error":"validation_error","message":"Validation failed: due_date: Input should be a valid date","errors":{"due_date":"Input should be a valid date"},"code":"GEN_002","request_id":"3f0e7c2a-9b4d-4e1a-8c6f-2d5b7a1e9c30"},"schema":{"$ref":"#/components/schemas/ErrorResponse"}}}},"401":{"description":"Unauthorized - Missing or expired token, an MCP OAuth token used against the REST API, or no access to this business","content":{"application/json":{"example":{"error":"unauthorized","message":"Authentication required","code":"AUTH_001","request_id":"3f0e7c2a-9b4d-4e1a-8c6f-2d5b7a1e9c30"},"schema":{"$ref":"#/components/schemas/ErrorResponse"}}}},"404":{"description":"Not Found - Resource does not exist","content":{"application/json":{"example":{"error":"not_found","message":"Resource not found","code":"NOT_FOUND_001","request_id":"3f0e7c2a-9b4d-4e1a-8c6f-2d5b7a1e9c30"},"schema":{"$ref":"#/components/schemas/ErrorResponse"}}}},"422":{"description":"Validation Error","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorResponse"},"example":{"error":"validation_error","message":"Validation failed: amount: Input should be a valid integer","errors":{"amount":"Input should be a valid integer"},"code":"GEN_002","request_id":"3f0e7c2a-9b4d-4e1a-8c6f-2d5b7a1e9c30"}}}}},"x-fastapi-operation-id":"accept_invitation_api_v1_invitations__token__accept_post"}}},"components":{"schemas":{"AcceptInvitationResponse":{"properties":{"status":{"type":"string","title":"Status"},"invitation_type":{"anyOf":[{"type":"string","enum":["client","staff"]},{"type":"null"}],"title":"Invitation Type"},"firm_name":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Firm Name"},"role":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Role"},"message":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Message"}},"type":"object","required":["status"],"title":"AcceptInvitationResponse"},"SuccessEnvelope_AcceptInvitationResponse_":{"properties":{"success":{"type":"boolean","title":"Success","default":true},"message":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Message"},"code":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Code"},"data":{"anyOf":[{"$ref":"#/components/schemas/AcceptInvitationResponse"},{"type":"null"}]}},"additionalProperties":true,"type":"object","title":"SuccessEnvelope[AcceptInvitationResponse]"},"ErrorResponse":{"title":"ErrorResponse","type":"object","description":"Envelope returned by every non-2xx response. Branch on `code` (stable) rather than `message` (human-readable, may change).","required":["error","message","code"],"properties":{"error":{"type":"string","description":"Error category: `validation_error`, `unauthorized`, `forbidden`, `not_found`, `conflict`, `rate_limited`, `server_error`, or `service_unavailable`."},"message":{"type":"string","description":"Human-readable explanation, safe to show to end users."},"code":{"type":"string","description":"Stable machine-readable code in `CATEGORY_NNN` form (e.g. `NOT_FOUND_006`, `AUTH_010`, `GEN_002`)."},"request_id":{"type":"string","description":"Correlation id for support requests. Echoes the `x-request-id` request header when one was supplied."},"errors":{"type":"object","additionalProperties":{"type":"string"},"description":"Field-level validation messages keyed by field name. Present on 400/422 validation failures only."}}}},"securitySchemes":{"BearerAuth":{"type":"http","scheme":"bearer","bearerFormat":"API Token","description":"API token authentication. Format: `Bearer dz_...`"}}},"security":[{"BearerAuth":[]}]}