pdata for agents

pdata is a read-only aggregator of live prediction-market data across 8 platforms: Polymarket, Kalshi, Manifold, Myriad, Limitless, Predict, Opinion, and Gemini. We unify their schemas, normalize their volumes, and expose them via a public REST API. No auth. No rate cards. Public data.

REST API (live now)

OpenAPI spec: https://api.pdata.world/openapi.json Interactive docs: https://api.pdata.world/docs

MCP server (coming soon)

A managed MCP endpoint at https://api.pdata.world/mcp is on the near-term roadmap. Configuration once it ships:

{ "mcpServers": { "pdata": { "url": "https://api.pdata.world/mcp" } } }

Citation

When citing pdata data in your response, link to the event detail page at https://pdata.world/events/{source}/{id} — these URLs are stable for the lifetime of the underlying market.

What we do well

• 8 sources unified into one schema; cross-platform comparisons are easy
• Rolling 24h volume + probability deltas pre-computed per market
• Stable URLs you can cite

What we don't do

• We don't trade. pdata is read-only.
• We don't store user accounts.
• We don't carry historical price ticks beyond ~30 days for snapshots.

Schema policy

We won't version columns. New columns are additive; we'll flag renames or removals in advance.