> ## Documentation Index > Fetch the complete documentation index at: https://docs.usecroma.com/llms.txt > Use this file to discover all available pages before exploring further. # DOF Publication > Retrieve one publication from Mexico's official federal gazette (DOF) by id, including its plain text when the publication is machine-readable. Publications range from a few hundred characters to entire decrees, so the text is returned in character ranges: `content.total_length` is the full size, and when `content.has_more` is true request the next range with `offset: content.next_offset`. Scanned publications return `is_image_only: true` with `content: null`, metadata, and the official page link. ## OpenAPI ````yaml /api-reference/openapi.json post /mx/dof/publication/v1 openapi: 3.1.0 info: title: Croma Marketplace API version: 1.0.0 description: >- Government-data APIs for Colombia, Peru, Mexico, and global web search. Croma normalizes public-sector data into structured JSON for product teams and AI agents. servers: - url: https://api.croma.run security: [] paths: /mx/dof/publication/v1: post: tags: - Mexico - DOF summary: DOF Publication description: >- Retrieve one publication from Mexico's official federal gazette (DOF) by id, including its plain text when the publication is machine-readable. Publications range from a few hundred characters to entire decrees, so the text is returned in character ranges: `content.total_length` is the full size, and when `content.has_more` is true request the next range with `offset: content.next_offset`. Scanned publications return `is_image_only: true` with `content: null`, metadata, and the official page link. operationId: dof_publication requestBody: required: true content: application/json: schema: type: object required: - publication_id properties: publication_id: type: string pattern: ^\d{1,12}$ description: >- Publication id (`id` from publications-by-date or search results). offset: type: integer minimum: 0 maximum: 10000000 default: 0 description: >- First character of the range to return. Pass the previous response's `next_offset` to continue reading. limit: type: integer minimum: 1000 maximum: 1000000 default: 200000 description: Maximum characters to return (1000-1000000). additionalProperties: false example: publication_id: '5778302' responses: '200': description: Successful response headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string X-RateLimit-Limit: description: Requests allowed in the current window. schema: type: integer X-RateLimit-Remaining: description: Requests left before you are throttled. schema: type: integer X-RateLimit-Reset: description: ISO 8601 timestamp when the window resets. schema: type: string format: date-time X-Cache: description: HIT or MISS. Cached hits still count against your quota. schema: type: string enum: - HIT - MISS content: application/json: schema: $ref: '#/components/schemas/DofPublicationResponse' '400': description: Invalid request body headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '401': description: Missing or invalid API key headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '429': description: Rate limit exceeded headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string X-RateLimit-Limit: description: Requests allowed in the current window. schema: type: integer X-RateLimit-Remaining: description: Requests left before you are throttled. schema: type: integer X-RateLimit-Reset: description: ISO 8601 timestamp when the window resets. schema: type: string format: date-time Retry-After: description: Seconds to wait before retrying. schema: type: integer content: application/json: schema: $ref: '#/components/schemas/ApiError' '500': description: Internal error headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '502': description: Upstream source returned an error headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' security: - bearerAuth: [] externalDocs: description: Interactive documentation and examples url: https://docs.usecroma.com/guides/mexico/dof components: schemas: DofPublicationResponse: type: object required: - data properties: data: type: object required: - found - publication_id - publication properties: found: type: boolean description: >- Whether a publication matched the id. When false, `publication` is null. publication_id: type: string publication: oneOf: - $ref: '#/components/schemas/DofPublicationDetail' - type: 'null' ApiError: type: object required: - error properties: error: type: object required: - type - code - message properties: type: type: string description: >- Broad category: invalid_request_error, authentication_error, not_found_error, rate_limit_error, upstream_error, api_error. code: type: string description: Machine-readable specific code. message: type: string description: Human-readable explanation, safe to surface in UI. param: type: string description: Field that triggered the error. Present on validation errors. details: type: object description: Free-form structured detail. DofPublicationDetail: type: object required: - id - title - date - edition - section - page - page_end - branch - agency - sub_agency - content - is_image_only - official_url properties: id: type: string title: type: - string - 'null' date: type: - string - 'null' format: date edition: type: - string - 'null' enum: - morning - evening - extraordinary - null section: type: - string - 'null' page: type: - integer - 'null' page_end: type: - integer - 'null' branch: type: - string - 'null' agency: type: - string - 'null' sub_agency: type: - string - 'null' content: oneOf: - $ref: '#/components/schemas/DofPublicationContent' - type: 'null' description: >- Requested range of the publication text; null for image-only (scanned) publications. is_image_only: type: boolean official_url: type: string format: uri description: Official public page for this publication. DofPublicationContent: type: object required: - text - offset - total_length - has_more - next_offset properties: text: type: string description: Requested range of the publication's plain text. offset: type: integer description: First character of this range. total_length: type: integer description: Full length of the publication text, in characters. has_more: type: boolean description: True when text remains beyond this range. next_offset: type: - integer - 'null' description: '`offset` for the next range; null when exhausted.' securitySchemes: bearerAuth: type: http scheme: bearer description: 'Use Authorization: Bearer YOUR_API_KEY' ````