big xyt website screenshot

big xyt

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.

big xyt publishes 3 APIs on the APIs.io network. Tagged areas include Financial, Market Data, Tick Data, Trading, and Analytics.

big xyt’s developer surface includes authentication, developer portal, documentation, engineering blog, support, and 7 more developer resources.

23.2/100 emerging ▬ flat Agent 10/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
3 APIs
FinancialMarket DataTick DataTradingAnalyticsEquitiesETFsTransaction Cost AnalysisLiquidityOrder Book

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 23.2/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 7.0 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 8.8 / 10
Agent readiness — 10/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/big-xyt: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

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 Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Big Xyt Authentication

oauth2 · 1 scheme

SECURITY

Big Xyt Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 1

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: big-xyt
url: https://raw.githubusercontent.com/api-evangelist/big-xyt/refs/heads/main/apis.yml
name: big xyt
kind: company
description: 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.
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/big-xyt.png
tags:
- Financial
- Market Data
- Tick Data
- Trading
- Analytics
- Equities
- ETFs
- Transaction Cost Analysis
- Liquidity
- Order Book
created: '2026-07-21'
modified: '2026-07-22'
specificationVersion: '0.19'
apis:
- aid: big-xyt:big-xyt-api
  name: big xyt API
  tags:
  - Tick Data
  - Market Data
  - Analytics
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.big-xyt.com/en/api/api
  properties:
  - url: https://docs.big-xyt.com/en/api/api
    type: Documentation
  - url: https://xythub.github.io/
    type: Portal
  description: 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 infrastructure. Publicly listed on the xythub.github.io
    landing page, but the reference documentation at docs.big-xyt.com is login-gated (HTTP 403 unauthenticated), so endpoints
    and base URLs are not publicly documented. Legacy public docs (2018, github.com/xythub) described an HTTPS REST service
    using OAuth 2.0 password-grant bearer tokens with Protocol Buffers payloads and official Python, R, Java, and C# client
    libraries.
- aid: big-xyt:liquidity-cockpit-api
  name: Liquidity Cockpit API
  tags:
  - Liquidity
  - Market Share
  - Equities
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.big-xyt.com/en/security-analytics/api
  properties:
  - url: https://docs.big-xyt.com/en/security-analytics/api
    type: Documentation
  - url: https://liquidity-cockpit.com/
    type: Website
  description: 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 named on the xythub.github.io landing page with a product
    site at liquidity-cockpit.com, but the API reference at docs.big-xyt.com is login-gated (HTTP 403 unauthenticated), so
    no endpoints or base URL are publicly documented.
- aid: big-xyt:tca-api
  name: TCA API
  tags:
  - Transaction Cost Analysis
  - Execution Analytics
  - Best Execution
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.big-xyt.com/en/execution-analytics/api
  properties:
  - url: https://docs.big-xyt.com/en/execution-analytics/api
    type: Documentation
  description: Execution analytics API spanning basic Transaction Cost Analysis - benchmarking trades and orders for best
    execution, compliance, and client reporting - through full API access to quantitative modelling functions for exchanges
    and sell-side and buy-side analysts. Publicly named on the xythub.github.io landing page, but the API reference at docs.big-xyt.com
    is login-gated (HTTP 403 unauthenticated), so no endpoints or base URL are publicly documented.
common:
- type: DomainSecurity
  url: security/big-xyt-domain-security.yml
- type: Authentication
  url: authentication/big-xyt-authentication.yml
- type: LLMsTxt
  url: llms/big-xyt-llms.txt
- type: Login
  url: https://platform.xyt.one/
- type: Website
  url: https://xyt.one/
- type: Portal
  url: https://xythub.github.io/
- type: Documentation
  url: https://docs.big-xyt.com/
- type: GitHubOrganization
  url: https://github.com/xythub
- type: LinkedIn
  url: https://www.linkedin.com/company/big-xyt/
- type: Blog
  url: https://xyt.one/insights
- type: PrivacyPolicy
  url: https://xyt.one/privacy-policy
- type: Support
  url: https://xythub.github.io/support.html
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com