# OpenMercantil, free, Gratuito, GET /api/v1/search: Business verification API

> Busca empresas [...] por nombre o CIF usando un indice por prefijos. Devuelve resultados ordenados por relevancia.

OpenMercantil's business verification API on its Gratuito plan. It costs $0.00 per 1,000 companies. OpenMercantil's docs list 1 of the 11 key fields we check: Registered name.
We ran OpenMercantil in [our business verification API benchmark](https://datacircle.dev/best-business-verification-api.txt). We didn't score any OpenMercantil plan.
This plan is free. We rank 903 plans for business verification APIs by price. Half the plans cost $7.895 per 1,000 companies or less.
[CharityAPI's $15 monthly plan](https://datacircle.dev/business-verification-apis/charityapi/15-monthly-paid-get-api-organizations-ein/llms.txt) is the cheapest paid plan per 1,000 companies. CharityAPI's plan covers companies in the United States only. CharityAPI's $15 monthly plan charges nothing per call. You get as many companies as CharityAPI's rate limit allows.
[Scoris's €19 pack](https://datacircle.dev/business-verification-apis/scoris/19-pack/llms.txt) covers any number of companies in 8 countries only. Scoris's €19 pack costs more up front than CharityAPI's $15 monthly plan.
[GovFiles](https://datacircle.dev/business-verification-apis/govfiles/top-up/llms.txt), [Didit](https://datacircle.dev/business-verification-apis/didit/top-up-from-50/llms.txt) and [CompanyData.com](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly/llms.txt) are the best business verification API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/business-verification-apis/openmercantil/free-gratuito-get-api-v1-search
- [Business verification API: the 12 best providers compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://openmercantil.es/precios?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Request: `GET https://openmercantil.es/api/v1/search`
- API key: not needed
- Its API docs: https://openmercantil.es/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#/Search/getSearch
- Sold by: OpenMercantil (https://openmercantil.es?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 9%
- Registered name: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Busca empresas [...] por nombre o CIF usando un indice por prefijos. Devuelve resultados ordenados por relevancia.

## Data

- Countries: Spain
- Keep data: no limit
- Use data: 2. Uso permitido: Consulta personal o profesional de fichas individuales de empresas y personas. Uso programático de la API pública respetando el rate-limit (60 req/min por IP). Reutilización de los datos bajo licencia CC BY 4.0 citando la fuente: BOE/BORME y OpenMercantil como intermediario técnico. Inclusión de fragmentos en investigación, periodismo y análisis con la atribución correspondiente. 3. Uso prohibido: Scraping masivo o automatizado por encima del rate-limit publicado. Reventa o redistribución del dataset presentándolo como «fuente oficial». Construcción de perfiles comerciales o publicitarios sobre personas físicas (RGPD art. 5.1.b). Cualquier intento de explotar vulnerabilidades, evadir limitaciones o degradar el servicio. Uso del servicio para finalidades ilícitas o contrarias al ordenamiento jurídico español.

## Plan

- Pay: €0
- You get: 200 requests a day
- Enough for: 200 calls a day

## Rate limit

- Per day: 200
- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: q. Optional: limit, offset
- Method: GET
- Path: /api/v1/search

## About the plan

- Plan: Gratuito
- Who can get it: anyone

## The 12 fields the plan's answer can hold

slug, legal name, CIF, province, CNAE code, CNAE section, registered capital, first seen, last seen, acts count, matched alias, aliases

## OpenMercantil's plans (4)

- [OpenMercantil, free, Gratuito, GET /api/v1/search](https://datacircle.dev/business-verification-apis/openmercantil/free-gratuito-get-api-v1-search/llms.txt): $0.00 per 1,000, 9% complete
- [OpenMercantil, €57 monthly, Profesional, GET /api/v1/search](https://datacircle.dev/business-verification-apis/openmercantil/57-monthly-profesional-get-api-v1-search/llms.txt): $0.428 per 1,000, 9% complete
- [OpenMercantil, €197 monthly, MAX, GET /api/v1/search](https://datacircle.dev/business-verification-apis/openmercantil/197-monthly-max-get-api-v1-search/llms.txt): $0.148 per 1,000, 9% complete
- [OpenMercantil, contact us, Enterprise, GET /api/v1/search](https://datacircle.dev/business-verification-apis/openmercantil/contact-us-enterprise-get-api-v1-search/llms.txt): 9% complete

## OpenMercantil's calls for this API (2)

- `GET /api/v1/company/{slug}`: [OpenMercantil, free, Gratuito, GET /api/v1/company/{slug}](https://datacircle.dev/business-verification-apis/openmercantil/free-gratuito-get-api-v1-company-slug/llms.txt)
- `GET /api/v1/search`: [OpenMercantil, free, Gratuito, GET /api/v1/search](https://datacircle.dev/business-verification-apis/openmercantil/free-gratuito-get-api-v1-search/llms.txt)

## OpenMercantil's APIs (2)

- [OpenMercantil: similar companies API pricing, 4 plans](https://datacircle.dev/similar-company-apis/openmercantil/free/llms.txt)
- [OpenMercantil: business verification API pricing, 4 plans, GET /api/v1/search](https://datacircle.dev/business-verification-apis/openmercantil/free-gratuito-get-api-v1-search/llms.txt)

## OpenMercantil: business verification API alternatives

- [Dato Capital, €249 monthly](https://datacircle.dev/business-verification-apis/dato-capital/249-monthly/llms.txt): $0.14 per 1,000, 64% complete, stored
- [CNPJa, R$6,749.89 yearly](https://datacircle.dev/business-verification-apis/cnpja/r-6749-89-yearly/llms.txt): $0.148 per 1,000, 36% complete, stored
- [FirmeAPI, RON 499.99 monthly](https://datacircle.dev/business-verification-apis/firmeapi/ron-499-99-monthly/llms.txt): $0.148 per 1,000, 45% complete, 1 week
- [DanskCVRAPI, DKK 299 monthly, Pro, GET /companies/search](https://datacircle.dev/business-verification-apis/danskcvrapi/dkk-299-monthly-pro-get-companies-search/llms.txt): $0.15 per 1,000, 45% complete, 1 minute

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

- https://openmercantil.es/api/documentacion?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://openmercantil.es/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://openmercantil.es/precios?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://openmercantil.es/reutilizacion-y-atribucion?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://openmercantil.es/terminos-de-uso?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://openmercantil.es/uso-razonable?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing