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Early access · REST API and MCP connector

Reliable business reference data, one API key away.

All APIs is one subscription to the reference data your business checks every day (postal codes, company identities, IBAN and SIRET checks), served as a REST API for your apps and as an MCP connector for your AI agents.

Read the API reference Ask for early access
  • 99.9 % monthly SLA
  • Refreshed at each new edition
  • 100 free calls a month
Confirm a company by its SIREN
$ curl https://api.all-apis.net/v1/companies/fr/900000027

{
  "siren": "900000027",
  "name": "ATELIER NUMERIQUE",
  "legalCategoryCode": "5710",
  "activityCode": "62.01Z",
  "createdOn": "2010-06-15",
  "isActive": true
}

Why businesses choose All APIs

Every form, onboarding flow and AI agent needs the same trusted facts. We gather them once, keep them fresh and serve them the same way.

One key, one contract, one bill

Stop wiring a new provider for every data source. One subscription covers every domain, and every domain we add next.

A contract that stays put

Fields carry clear business names such as isActive. Source changes never reach your code, and a breaking change only ships under a new /v2 route.

Checks you can explain

Each trust answer lists the checks run and whether they passed, never an opaque score, so your team can justify every decision.

No surprise invoice

Capped plans stop with a clear 429 answer instead of billing overage. Pay as you go runs under the spending limit you set.

Our commitments

They apply from the public launch of the REST API and the MCP connector.

99.9 %

Monthly availability

At most 43 min 49 s of downtime in a month, shown on our public status page.

0

Live dependency

Every answer comes from our own snapshots, never proxied live to a third-party service: an upstream outage or rate limit never reaches you.

Per source

Fresh data

Each source is refreshed at its own publication pace, and each new edition is validated before it serves a single answer.

Dated

Known freshness

The catalog gives the refresh date of each domain. Questions about our data? Contact us.

APIs offered

Version 1 covers France; more countries are on the roadmap. Each domain answers over REST and through the MCP connector.

geography

Postal codes and cities

Find the cities behind a French postal code, or the postal codes of a city, matched the way mail is addressed.

  • GET /v1/geography/fr/postal-codes/{postalCode}/cities
  • GET /v1/geography/fr/cities?name=

Refreshed as soon as a new edition is out

companies

Company identity

Confirm a French company by its SIREN or find it by name: legal name, legal category, activity code, creation date and whether it is still active.

  • GET /v1/companies/fr/{siren}
  • GET /v1/companies/fr?name=

Refreshed every month

trust

IBAN, SIREN, SIRET and email checks

Is this value plausible? Each answer gives a level and the checks behind it, such as format, country length and checksum.

  • POST /v1/trust/iban
  • POST /v1/trust/fr/siren
  • POST /v1/trust/fr/siret
  • POST /v1/trust/email

Pure algorithms: no data leaves the request

mcp

MCP connector for AI agents

The source of truth for your AI agents: add https://mcp.all-apis.net/mcp as a remote connector and they look up real companies, places and checks instead of guessing them. Its tools look data up and never change anything.

  • list_api_domains
  • find_french_cities_by_postal_code
  • find_french_company_by_siren
  • assess_iban_trust

Same answers as the REST API

Every operation, parameter and answer is in the API reference; the live list of domains is /v1/catalog.

Pricing

Start free, then pick the volume you need. Prices exclude VAT. Early access: Pro and pay as you go are indicative.

Plan Price Calls per month
Free 0 € 100, capped
Starter 20 € excl. VAT / month 100,000, capped
Pro 90 € excl. VAT / month 1,000,000, capped
Pay as you go 0.30 € excl. VAT / 1,000 calls Your own spending limit

Capped plans never overspend: calls beyond the cap answer 429 until the 1st of next month. One MCP tool call counts as one API call.

Start with 100 free calls a month

Tell us which data you need to check: we send you a key as soon as the API opens.

Ask for early access Read the API reference