Building an AI agent? Start with /llms.txt for the full site index.
Overview
A machine-readable API contract for client generation, API testing and agent endpoint discovery.
The left-hand navigation lists every dataset page, and Quick Start walks through building a first request.
For agents and internal tools, the OpenAPI spec, llms.txt and the MCP server are the programmatic entry points.
TW Market Data describes its publicly available API contract in OpenAPI 3.x.
The public machine-readable artifact is /openapi.json.
The spec is updated as coverage grows and datasets are productised. For field-level detail, the endpoint's own docs page governs.
