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The SeeSaw MCP server exposes the full Open API capability set as Model Context Protocol tools — the native way for AI agents (Claude Code, Cursor, VS Code, and others) to explore prediction markets.

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Endpoint

POST https://api.seesaw.fun/mcp
  • Transport: Streamable HTTP, stateless — every request is self-contained, no session to keep alive, safe to retry.
  • Auth: the same Authorization: Bearer sspat_… header as REST, on every request. No OAuth dance.
  • Protocol version: negotiated automatically by your client/SDK.

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One capability set, two faces

The 14 MCP tools and the 14 REST endpoints are the same capabilities: tool results carry the corresponding REST response JSON (as structured content plus a text rendering). If you know one face, you know the other — the REST reference doubles as the schema reference for tool results. Rate limits are also shared: REST calls and tool calls draw from the same per-key budgets (details).

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Set up your client

Claude Code

One claude mcp add command.

Cursor

.cursor/mcp.json snippet.

VS Code

.vscode/mcp.json snippet (note: key is servers).

Other clients

mcp-remote bridge for clients without header support.

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The 14 tools

Ten public-data tools (search, browse, market data, users, leaderboards, zones, contests) and four account tools (profile, positions, settlements, created topics) — see the tools overview for the full map and when to use which.