# big xyt

**Canonical:** https://apis.io/providers/big-xyt/  
**Website:** https://xyt.one/  
**APIs profiled:** 3

big xyt AG (now branded simply xyt, with big-xyt.com redirecting to xyt.one) is an independent, majority employee-owned market data analytics firm headquartered in Frankfurt am Main, Germany. It sells tick-data-driven market intelligence covering equities, ETFs, listed derivatives, FX, and fixed income across 120+ venues, processing 12bn+ messages per day with roughly ten years of history at nanosecond precision and market-by-order granularity. Products include the Liquidity Cockpit (market share and liquidity analytics), Transaction Cost Analysis against its SMART benchmark, pre-trade cost modeling, a Datashop of analysis-ready datasets and APIs, and an xyt AI natural-language query layer. Three API products are publicly named - the big xyt API, Liquidity Cockpit API, and TCA API - but their reference documentation sits behind a login at docs.big-xyt.com (HTTP 403 unauthenticated), and access is sales-gated via a book-a-demo motion with no self-serve signup, public pricing, or public OpenAPI.

## Kin Score — 17.3 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 17.3).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 38.1 |
| Commercial Clarity | 17.1 |
| Access Clarity | 17.1 |

Regulatory layer — **Securities & Market Data**: 26.7 (matched via tags).

## Agent readiness — 8.5 (agent-aware)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (3)

- **big xyt API** — The core big xyt (xyt hub) API gives trading firms and exchanges programmatic access to normalised and raw tick data and analytics across 120+ venues without in-house tick data ...
- **Liquidity Cockpit API** — API access to the Liquidity Cockpit, big xyt's dark and lit liquidity, market share, and market quality analytics for navigating fragmented equity market structure. Publicly nam...
- **TCA API** — Execution analytics API spanning basic Transaction Cost Analysis - benchmarking trades and orders for best execution, compliance, and client reporting - through full API access ...

## Security (2)

- **Big Xyt Authentication** — oauth2 · 1 scheme
- **Big Xyt Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Financial, Market Data, Tick Data, Trading, Analytics, Equities, ETFs, Transaction Cost Analysis, Liquidity, Order Book

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