> ## 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. # Extract JSON > Pull structured data off any public web page. You supply a JSON Schema describing the object you want and the fields are located on the page and returned under `result`, already typed. ## OpenAPI ````yaml /api-reference/openapi.json post /global/extract/json/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: /global/extract/json/v1: post: tags: - Global - Croma summary: Extract JSON description: >- Pull structured data off any public web page. You supply a JSON Schema describing the object you want and the fields are located on the page and returned under `result`, already typed. operationId: extract_json requestBody: required: true content: application/json: schema: type: object required: - url - json_schema properties: url: type: string format: uri maxLength: 2000 description: >- Public http or https URL of the page to read. Loopback and private addresses are not accepted. json_schema: type: object description: >- JSON Schema for the object to return. Field names and nesting are yours; describe each field so it can be located on the page. effort: type: string enum: - min - standard - max default: standard description: >- Effort to spend on the page: `min` is fastest, `standard` is the balanced default, `max` handles pages that render themselves in the browser. country: type: string pattern: ^([A-Za-z]{2})?$ default: '' description: >- Optional ISO 3166-1 alpha-2 country code (e.g. `CO`) for pages that serve different content by country. Omit for the default route. additionalProperties: false example: url: >- https://www.funcionpublica.gov.co/eva/gestornormativo/norma.php?i=304 json_schema: type: object required: - title properties: title: type: string description: Nombre de la norma. issued_on: type: string description: Fecha de expedición. 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/StructuredDataResponse' '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/global/extract components: schemas: StructuredDataResponse: type: object required: - data properties: data: type: object required: - url - result properties: url: type: string format: uri description: The page that was read, after any redirects. result: type: object additionalProperties: true description: The object described by the `json_schema` you sent. 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. securitySchemes: bearerAuth: type: http scheme: bearer description: 'Use Authorization: Bearer YOUR_API_KEY' ````