# OpenMercantil

**Canonical:** https://apis.io/providers/openmercantil/  
**Website:** https://openmercantil.es/  
**APIs profiled:** 18

OpenMercantil is an independent public-data API for Spanish company intelligence. It indexes the Boletin Oficial del Registro Mercantil (BORME) and cross-references it with 80+ official public sources (BOE, CNMV, CNMC, AEAT, AEPD, PLACSP, TED EU, BDNS, OEPM, EPO, WIPO, CENDOJ, GLEIF, OpenSanctions, ICIJ and more) to expose company and person search, structured company reports, BORME registry event timelines, documentary officer mentions, CNAE sector navigation and ratios, daily BORME summaries, public-procurement notices and rankings, documentary risk signals, a corporate relationship graph, a Spanish mercantile-law corpus that bridges registry acts to the governing BOE norm, account-plane datasets and HMAC-signed outbound webhooks, and CSV/JSON bulk exports. The live OpenAPI 3.1 contract (v1.9.3) declares 118 paths and 139 operations. The public read plane is free and anonymous with no API key, rate-limited at 60 req/min and 200 req/day per IP, with paid Profesional, MAX and Enterprise tiers raising the quota. Derived data is CC BY 4.0 and every response carries its own source and attribution metadata. The project is informational and does not replace official Registro Mercantil certificates.

## Kin Score — 87.3 / 100 (exemplar)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 87.3).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 77.4 |
| Governance | 55.3 |
| Contract Governance | 55.3 |
| Operational Transparency | 94.7 |
| Developer Ergonomics | 56.5 |
| Commercial Clarity | 100.0 |
| Access Clarity | 100.0 |

Regulatory layer — **Government & Public Sector**: 85.2 (matched via tags).

## Agent readiness — 55.8 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | verified |
| Error Semantics | verified |
| OpenAPI Examples | partial |
| Rate Limit Signal | verified |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium (free trial) · Open access — onboarding: open, pricing: freemium, trial: yes (confidence: high).

## APIs (18)

- **OpenMercantil API Credentials API** — Account API credential management: list, create, rotate and revoke opaque omk_* API keys. Secrets are returned once and recoverable only via an identical Idempotency-Key replay ...
- **OpenMercantil Billing API** — Session-bound Stripe checkout, invoices and portal contracts. External actions are bounded, idempotent and never exposed through the public MCP.
- **OpenMercantil BORME API** — Daily BORME publications, multi-source timeline and registry events
- **OpenMercantil Companies API** — Company reports and registry events
- **OpenMercantil Datasets API** — Bulk exports (CSV / JSON / aggregated stats)
- **OpenMercantil Graph API** — Corporate and person-to-company relationship graphs. Every emitted record retains the source-specific terms authorized by the active public source catalog; no blanket relicensin...
- **OpenMercantil Integrations API** — Public read-only connector catalog. Never exposes credentials, OAuth tokens, webhook secrets or operator actions.
- **OpenMercantil Legal API** — Spanish mercantile-law layer (derecho mercantil): legislation corpus + article texts + act→norm bridge. Distributes the consolidated BOE legal corpus structured by OpenMercantil...
- **OpenMercantil Persons API** — Documentary mentions of natural persons in BORME (officer roles). Persons treated as documentary mentions only — no DNI, no contact data, no scoring.
- **OpenMercantil Public Procurement API** — Public procurement awards (PLACSP) and grants (BDNS)
- **OpenMercantil Risk Signals API** — Documentary risk signals from public sources (AEPD, CNMC, concursos, AEAT moroso, CENDOJ)
- **OpenMercantil Search API** — Company and person search endpoints
- **OpenMercantil Sectors API** — CNAE sector aggregates, ratios and company listings
- **OpenMercantil Sources API** — Source catalog metadata, freshness and integration status
- **OpenMercantil Support API** — Customer-support writes. Anonymous creation requires explicit privacy consent; replies require an authenticated owner session and CSRF. Ticket data is never exposed through the ...
- **OpenMercantil System API** — Service health and metadata
- **OpenMercantil User API** — Authenticated Panel Pro endpoints — segments, lists, notes, tags, exports, audit. Requires session cookie (browser) and X-CSRF-Token header for mutations.
- **OpenMercantil Webhooks API** — Account outbound webhooks: register, update, rotate the HMAC signing secret and delete event subscriptions. Three subscribable event types; deliveries are signed and fail closed...

## Agentic access (1)

- **Openmercantil Agentic Access** — 36 operations · 2 acting

## Security (4)

- **Openmercantil Authentication** — apiKey/http · 3 schemes
- **Openmercantil Domain Security** — TLSv1.3 · HSTS
- **Openmercantil Vulnerability Disclosure** — disclosure policy published
- **Openmercantil Trust Center** — trust center published

## Plans (1)

- **Openmercantil Plans Pricing**

## Tags

BDNS, BORME, Business Registry, CIF, CNAE, CNMV, CSV, Company Data, Company Search, Corporate Registry, DCAT-AP, Daily Summary, Geocoding, JSON, Legal Data, Mercantile Law, OEPM, Open Data, Open Government Data, OpenAPI, OpenSanctions, PLACSP, Public Procurement, Public Records, Public-Interest Data, REST API, Registry Timeline, Risk Signals, Sanctions, Spain, Spanish Companies, Spanish Open Data, Tenders, Trust Score, Webhook

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/openmercantil/). Scores are computed from the provider's own public artifacts under a published rubric.