> ## 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. # SIEM Establishments Search > Search Mexican business establishments in the SIEM directory by commercial name or razón social. Optional filters narrow by state (INEGI code) and SCIAN activity. SIEM is a self-declared directory: registration is voluntary and each establishment chooses which fields stay public, so absence is not evidence of anything. Drill into a result with `siem-establishment`. Supports async delivery: set `Prefer: wait=N` for an inline result, pass `callback_url` to receive a POST when ready, or poll `GET /jobs/{id}`. ## OpenAPI ````yaml /api-reference/openapi.json post /mx/siem/establishments/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/siem/establishments/v1: post: tags: - Mexico - SIEM summary: SIEM Establishments Search description: >- Search Mexican business establishments in the SIEM directory by commercial name or razón social. Optional filters narrow by state (INEGI code) and SCIAN activity. SIEM is a self-declared directory: registration is voluntary and each establishment chooses which fields stay public, so absence is not evidence of anything. Drill into a result with `siem-establishment`. Supports async delivery: set `Prefer: wait=N` for an inline result, pass `callback_url` to receive a POST when ready, or poll `GET /jobs/{id}`. operationId: siem_establishments parameters: - name: Prefer in: header required: false description: >- Set `wait=N` to hold the connection up to N seconds for an inline result. If the job finishes in time you get the normal 200 body; otherwise a 202 with a `status_url` to poll. schema: type: string example: wait=30 requestBody: required: true content: application/json: schema: type: object required: - name properties: name: type: string minLength: 2 maxLength: 200 description: >- Commercial name or razón social to search for. Matched case-insensitively as a substring. state_code: type: integer minimum: 0 maximum: 32 default: 0 description: >- INEGI state code (1-32) to filter by. Omit or 0 searches all states. activity_code: type: integer minimum: 0 maximum: 999999 default: 0 description: >- SCIAN activity code to filter by (exact match). Omit or 0 searches all activities. page: type: integer minimum: 1 maximum: 1000 default: 1 description: 1-based page number for paginated results. callback_url: type: string format: uri description: POST the job result here when it finishes. additionalProperties: false example: name: OXXO state_code: 21 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/SiemEstablishmentsResponse' '202': description: >- Accepted — the result is being computed asynchronously. Poll `job.status_url` (GET /jobs/{id}) or supply `callback_url` to have the result POSTed to you. Returned when `Prefer: wait` elapses before completion, or immediately when `callback_url` is set. headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string Retry-After: description: Seconds to wait before retrying. schema: type: integer Location: description: Absolute URL to poll for job status. schema: type: string format: uri example: https://api.croma.run/jobs/run_123 X-Job-Id: description: Id of the created job. schema: type: string content: application/json: schema: $ref: '#/components/schemas/JobEnvelope' '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/siem components: schemas: SiemEstablishmentsResponse: type: object required: - data properties: data: type: object required: - query - establishments - pagination properties: query: type: string description: The (upper-cased) name that was searched. establishments: type: array items: $ref: '#/components/schemas/SiemEstablishmentSummary' pagination: $ref: '#/components/schemas/Pagination' JobEnvelope: type: object required: - job - data - error description: >- Returned by async-capable endpoints (202) and by GET /jobs/{id}. `data` holds the endpoint's normal result once `status` is `completed`; `error` is populated once `status` is `failed`. properties: job: type: object required: - id - status - endpoint - created_at - finished_at - status_url properties: id: type: string status: type: string enum: - queued - running - completed - failed - canceled - expired endpoint: type: string description: The endpoint path that created this job. created_at: type: - string - 'null' format: date-time finished_at: type: - string - 'null' format: date-time status_url: type: string format: uri description: GET this URL to poll the job. data: description: The endpoint's normal result object once completed; null until then. oneOf: - type: object - type: 'null' error: description: Populated once the job has failed; null otherwise. oneOf: - type: object required: - type - code - message properties: type: type: string code: type: string message: type: string - 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. SiemEstablishmentSummary: type: object required: - establishment_id - commercial_name - chamber - state - state_code properties: establishment_id: type: string description: Opaque id; pass it to `siem-establishment` for the full profile. commercial_name: type: - string - 'null' chamber: type: - string - 'null' state: type: - string - 'null' state_code: type: - integer - 'null' description: INEGI state code (1-32). Pagination: type: object required: - total - page_size - total_pages - page properties: total: type: integer page_size: type: integer total_pages: type: integer page: type: integer securitySchemes: bearerAuth: type: http scheme: bearer description: 'Use Authorization: Bearer YOUR_API_KEY' ````