The hosted MCP server is live at mcp.twmarketdata.com/mcp and connectable today. It is beta, not GA — the surface may change before general availability, and the REST API remains the stable path.
It speaks streamable-HTTP MCP and authenticates with your X-API-Key. With Claude Code:
claude mcp add --transport http tw-market-data \ https://mcp.twmarketdata.com/mcp \ --header "X-API-Key: sk_live_..."
Server tw-market-data (v1.28.1) exposes four tools; an agent discovers them automatically after connecting:
- list_datasets — discovery entry point. Lists the available datasets (id / name / category / tier / one-line description). Use this first to find the right data.
- describe_dataset — full semantics of one dataset: grain (what a row is), field meanings + units, time-correctness rules (point-in-time safety — read before backtesting), relations and agent hints.
- query_dataset — query rows with built-in look-ahead protection. Pass as_of (YYYY-MM-DD) for backtesting: rows are filtered by disclosure date ≤ as_of, so the agent only sees what was public then.
- find_related — traverse the knowledge graph for cross-table / supply-chain reasoning: dataset_id returns join-able datasets; ticker returns its industry value-chain node + peers.
- Same official data and same credits as REST — the MCP tools are a protocol wrapper, not a separate dataset. (Descriptions above are pulled from the live server, not paraphrased.)
English is a semantic rewrite, not a machine translation.
