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The MiCA Register is a read-only lookup over the EU register of crypto-asset entities, sourced from ESMA. It answers who is licensed, under which category, in which member state, and whether an entity is flagged as non-compliant. Every endpoint here is a query. Nothing on this surface writes.

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Base Path

Requests authenticate with a MiCA API key in the X-API-Key header. It is a separate key from an instance API key and carries no instance scope, because the data is public register data rather than your own. See Authentication.

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Rate Limits

MiCA API keys are rate-limited per key. Exceeding the limit returns 429 with a Retry-After header. See Rate Limits for current thresholds.

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Caching

All responses include Cache-Control headers. List and statistics endpoints cache for 5 minutes, detail endpoints for 10 minutes. The X-Data-Source response header indicates whether the result was served from cache, database, or is empty.

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Endpoints

List Issuers

Retrieve all registered entities with filtering by license type, country, status, and entity type. Supports search, sorting, pagination, and field projection.

Get Issuer

Fetch full details for a single entity by ID.

Search

Full-text search across entity names, LEIs, commercial names, and national authorities.

Statistics

Aggregate breakdowns by license type, country, and status, plus the 10 most recently authorized entities.

License Types

List all license categories with entity counts.

Countries

List all countries with registered entities.

Health

Operational status check for uptime monitoring.