# BMLL Reference Data API

**Canonical:** https://apis.io/apis/bmll-technologies/bmll-reference-data-api/  
**Provider:** BMLL Technologies — https://apis.io/providers/bmll-technologies/  
**Base URL:** https://reference.data.bmlltech.com  
**Documentation:** https://pypi.org/project/bmll/

BMLL Reference Data API is one of 4 APIs that [BMLL Technologies](https://apis.io/providers/bmll-technologies/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Reference Data, Instruments, Markets, and Listings. The published artifact set on APIs.io includes API documentation.

Query reference data for the instruments, listings, and markets in the BMLL universe (equities, ETFs, futures, options), including availability by data type (LOB, listing/instrument/market-level metrics, DataFeed) and ETF constituent data. Documented publicly through the bmll Python SDK (ReferenceDataClient); the host is live but requires entitled key-pair credentials (probed 403 without auth).

## Machine-readable artifacts (3)

- **Documentation** — https://pypi.org/project/bmll/
- **Portal** — https://data.bmlltech.com
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/bmll-technologies/refs/heads/main/apis.yml

## Other BMLL Technologies APIs (3)

- [BMLL Time-Series API](https://apis.io/apis/bmll-technologies/bmll-time-series-api/)
- [BMLL Market Data API](https://apis.io/apis/bmll-technologies/bmll-market-data-api/)
- [BMLL APIv2 Query API](https://apis.io/apis/bmll-technologies/bmll-api-v2/)

## Tags

Reference Data, Instruments, Markets, Listings

---

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