# FCA Data Publication API (FIRDS / FITRS)

**Canonical:** https://apis.io/apis/fca-uk/fca-data-publication-api/  
**Provider:** Financial Conduct Authority — https://apis.io/providers/fca-uk/  
**Base URL:** https://api.data.fca.org.uk  
**Documentation:** https://data.fca.org.uk/#/download

FCA Data Publication API (FIRDS / FITRS) is one of 2 APIs that [Financial Conduct Authority](https://apis.io/providers/fca-uk/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Market Data, Reference Data, MiFID II, Instrument Data, and Regulator. The published artifact set on APIs.io includes API documentation, an API reference, authentication docs, and rate-limit docs.

Anonymous machine-to-machine query interface over the file artefacts the FCA publishes through data.fca.org.uk, documented in the FCA's own FIRDS and FITRS technical specifications. It is an OpenSearch/Elasticsearch query-string search: the index name is the resource and the FCA supports a documented subset of the query_string DSL (q, from, size, sort, pretty, df, default_operator). Two indices respond publicly — fca_data_firds_files, holding UK instrument reference data file records under the UK MiFID regime that replaced ESMA FIRDS after Brexit, and fca_data_fitrs_files, holding UK transparency calculation result files. Each record carries download_link, file_type, file_name, publication_date, last_refreshed and, for FITRS, instrument_type. No credentials are required and no OpenAPI is published; every other index name probed returns 403 Missing Authentication Token. This is markets reference data, not insurance data.

## Machine-readable artifacts (5)

- **Documentation** — https://www.fca.org.uk/publication/systems-information/fca-firds-tech-spec.pdf
- **APIReference** — https://www.fca.org.uk/publication/systems-information/fca-fitrs-tech-spec.pdf
- **Website** — https://data.fca.org.uk/
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/fca-uk/refs/heads/main/authentication/fca-uk-authentication.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/fca-uk/refs/heads/main/rate-limits/fca-uk-rate-limits.yml

## Other Financial Conduct Authority APIs (1)

- [FCA Financial Services Register API](https://apis.io/apis/fca-uk/fca-financial-services-register-api/)

## Tags

Market Data, Reference Data, MiFID II, Instrument Data, Regulator, United Kingdom

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/fca-uk/fca-data-publication-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/fca-uk/.