> ## Documentation Index > Fetch the complete documentation index at: https://docs.oncanary.com/llms.txt > Use this file to discover all available pages before exploring further. # Generate a Canary label > Generate an opaque Canary QR payload for a record ## OpenAPI ````yaml /openapi.yaml post /identifiers/generate openapi: 3.1.0 info: title: Canary API version: '1.0' description: > Build integrations around Canary work orders, requests, equipment, inventory, meters, custom fields, and scannable identifiers. ## Authentication All API requests require authentication using an API key. Include your API key in the `Authorization` header: ``` Authorization: Bearer sk_live_your_api_key_here ``` ## Rate Limits - **Live keys**: 1,000 requests per minute - **Test keys**: 100 requests per minute Both key prefixes access the same organization data. The prefix selects the rate-limit bucket. Successful authenticated responses include rate limit headers: - `X-RateLimit-Limit`: Maximum requests per window - `X-RateLimit-Remaining`: Requests remaining in current window - `X-RateLimit-Reset`: Unix timestamp when the window resets ## Pagination Canary-native list endpoints use ID cursors and the standard `data`/`meta` envelope. MaintainX-compatible request endpoints use their compatibility response wrappers and encoded offset cursors. Follow each operation's response schema. Native list responses include: - `data`: Array of items - `meta.pagination.cursor`: Cursor for the next page (if `has_more` is true) - `meta.pagination.has_more`: Whether more items exist Use the cursor value in your next request: `?cursor=` servers: - url: https://api.oncanary.com/v1 description: Production - url: http://localhost:3000/api/v1 description: Local Development security: - bearerAuth: [] tags: - name: Meters description: Meters track equipment usage and readings - name: Meter Readings description: Record and retrieve meter readings - name: Work Orders description: Maintenance work orders - name: Work Requests description: Requests that can be reviewed and converted into work orders - name: Work Request Portals description: Public request portal configuration - name: Assets description: Equipment and machinery - name: Locations description: Physical places where assets, parts, and meters are assigned - name: Parts description: Spare parts and inventory records - name: Identifiers description: Scannable identifiers for assets, locations, and parts - name: Custom Fields description: Typed custom-field definitions shared by maintenance resources paths: /identifiers/generate: post: tags: - Identifiers summary: Generate a Canary label description: Generate an opaque Canary QR payload for a record operationId: generateIdentifier requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/GenerateIdentifierRequest' responses: '201': description: Canary identifier generated content: application/json: schema: $ref: '#/components/schemas/IdentifierResponse' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '409': $ref: '#/components/responses/Conflict' '429': $ref: '#/components/responses/RateLimited' components: schemas: GenerateIdentifierRequest: type: object required: - target properties: target: $ref: '#/components/schemas/IdentifierTarget' is_primary: type: boolean IdentifierResponse: allOf: - $ref: '#/components/schemas/SingleResponse' - type: object properties: data: $ref: '#/components/schemas/Identifier' IdentifierTarget: type: object required: - type - id properties: type: $ref: '#/components/schemas/IdentifierEntityType' id: type: string SingleResponse: type: object required: - data - meta properties: data: type: object meta: type: object required: - request_id - api_version properties: request_id: type: string api_version: type: string Identifier: type: object required: - id - system - value - source - is_primary - created_at - scan_values properties: id: type: string system: type: string value: type: string source: type: string enum: - canary - customer - import - migration is_primary: type: boolean created_at: type: string format: date-time scan_values: type: array items: $ref: '#/components/schemas/IdentifierScanValue' ProblemDetails: type: object description: RFC 7807 Problem Details required: - type - title - status - detail - request_id - code example: type: https://api.oncanary.com/errors/validation_error title: Validation Error status: 400 detail: Request validation failed request_id: req_01JAY8FVDM6CH4R3X9Q2T7K5NP code: validation_error properties: type: type: string format: uri title: type: string status: type: integer detail: type: string request_id: type: string code: type: string validation_errors: type: array items: type: object required: - field - message properties: field: type: string message: type: string IdentifierEntityType: type: string enum: - asset - location - part IdentifierScanValue: type: object required: - id - payload properties: id: type: string payload: type: string format_hint: type: - string - 'null' responses: BadRequest: description: Bad Request headers: X-Request-ID: $ref: '#/components/headers/RequestId' content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' Unauthorized: description: Unauthorized - Invalid or missing API key headers: X-Request-ID: $ref: '#/components/headers/RequestId' content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' Forbidden: description: >- Forbidden - `insufficient_scope` when the API key lacks the scope, or `module_disabled` when the organization module is disabled headers: X-Request-ID: $ref: '#/components/headers/RequestId' content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' NotFound: description: Resource not found headers: X-Request-ID: $ref: '#/components/headers/RequestId' content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' Conflict: description: Resource state conflicts with the requested operation headers: X-Request-ID: $ref: '#/components/headers/RequestId' content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' RateLimited: description: Rate limit exceeded headers: X-Request-ID: $ref: '#/components/headers/RequestId' Retry-After: description: Seconds until rate limit resets schema: type: integer content: application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' headers: RequestId: description: Unique request identifier to include with support requests schema: type: string example: req_01JAY8FVDM6CH4R3X9Q2T7K5NP securitySchemes: bearerAuth: type: http scheme: bearer description: Organization API key with an `sk_live_` or `sk_test_` prefix ````