SIEM

The Sistema de Información Empresarial Mexicano: Mexico’s national business directory, operated through the business chambers. Search establishments by commercial name or razón social, narrow by state and SCIAN activity, then pull the declared profile: RFC, activity, address and contact, headcount, foreign trade, and declared products and services.

Search establishments

POST /mx/siem/establishments/v1

Field	Type	Notes
`name`	string	Required. Commercial name or razón social, 2-200 characters. Case-insensitive substring.
`state_code`	integer	INEGI state code (1-32). Omit or `0` to search all states.
`activity_code`	integer	SCIAN activity code (exact match). Omit or `0` to search all activities.
`page`	integer	1-based page number. 10 per page.

curl https://api.croma.run/mx/siem/establishments/v1 \
  -H "Authorization: Bearer $CROMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "name": "OXXO", "state_code": 21 }'

Returns query (the upper-cased name that was searched), establishments, and pagination (total, page, page_size, total_pages).

Field	Notes
`establishment_id`	Opaque id; pass it to the detail endpoint below.
`commercial_name`	Declared commercial name.
`chamber`	Business chamber the establishment registered through.
`state`, `state_code`	State name and INEGI code (1-32).

Establishment detail

POST /mx/siem/establishment/v1

Field	Type	Notes
`establishment_id`	string	Required. The `establishment_id` from the search above.

curl https://api.croma.run/mx/siem/establishment/v1 \
  -H "Authorization: Bearer $CROMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "establishment_id": "3417757" }'

Returns found, establishment_id, and establishment (null when the id is unknown).

Field	Notes
`rfc`	Tax id, when declared.
`legal_name`, `person_name`	Razón social (personas morales) or full name (personas físicas).
`commercial_name`	Declared commercial name.
`main_activity`, `activity_code`	Free-text primary activity and SCIAN code.
`state`, `state_code`, `municipality_code`	State name plus INEGI state and municipality codes.
`status`	Registration status (e.g. `Actualizado`, `Vencido`).
`public_listing`	Whether the establishment opted into public listing.
`registration_date`, `updated_date`, `expiration_date`	Registration dates (`yyyy-mm-dd`).
`location`	Street address, neighborhood, postal code, municipality, cross streets, phone, email, website.
`profile`	Start date, headcount (total and women), export/import flags, government-supplier flag, activities, chamber, business group.
`products`, `services`	Declared products and services.
`export_countries`, `import_countries`	Declared export destinations and import origins.

SIEM is a self-declared, voluntary directory: each establishment decides whether to register and which fields to publish. Treat results as a declared commercial profile, not proof of existence or legitimacy, and treat absence as no signal at all.

These lookups can take longer than a typical request. They are async jobs. By default the request waits inline and returns { data }, or you can poll / use a callback_url.

Full reference

Schemas, response fields, and an interactive playground.

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Countries

Search establishments

Establishment detail

Full reference

​Search establishments

​Establishment detail

Full reference

Search establishments

Establishment detail