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Markdown copyREPLAY: Archive JSON and the free MCP server
Every finished session is free: as JSON from the site with no key, and through the MCP server's free tools for an assistant.
This product serves
Read one session at a time. A visitor that walks many distinct days in an hour is slowed (429 with Retry-After); the whole archive as files is the DATASET licence.
The free MCP server answers the same archive for assistants: see MCP.
Endpoints
| Request | What it gives | Plan | Key scope |
|---|---|---|---|
| GET /api/days | Every finished session | Free | none |
| GET /api/session/{day} | One session's closing measurements | Free | none |
More
- The free MCP server: Twelve free tools over every finished session, with no account: sessions, levels, ladders, the market calendar, the screener and the tickers' books.
Limits
| What | Limit | Notes |
|---|---|---|
| Archive JSON and the session files | Distinct days per address: a visitor that walks many sessions in an hour is slowed | Every finished session is free to read one at a time. Bulk copies are the DATASET licence, which lifts the breadth limit. |
| MCP server, free tools | get_gex_profile: 50 distinct days an hour and 150 in 24 hours per client address | Days already opened in the window keep answering. The other free tools have no per-address limit. |
Measurements of dealer positioning, never a forecast or a trade call. This page is built from FirmTape's public contract, the same files the OpenAPI document is built from; the tests hold them against the route code. Markdown: /docs/developers/replay.md.