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Explore the API

Start with the question you are trying to answer. This guide points you to the right data and shows the requests that come next.

A typical first request

Most projects follow the same path:
  1. Find an event, market, index, or rate.
  2. Save its id from the response.
  3. Request the detail or price history for that id.
  4. Use the returned data in your chart, report, alert, or agent.
The API returns stable ids. Pass them from one request into the next instead of guessing a ticker or rebuilding a venue-specific identifier.
Market data
Find markets and events, then read prices, trades, quotes, and candles.
Indices
Track a value built from many prediction markets.
Reference rates
Combine prices across venues or across contracts that roll over time.
News
Find articles and connect them to markets, indices, and filings.
Filings
Browse CFTC industry filings, changes, attachments, and related records.
MCP server
Let an AI agent find and read Adjacent data through four focused tools.

Pick a starting point

You are exploring a topic. Start with Market data. Search for an event, inspect its markets, and follow the price history.
You need a broader signal. Start with Indices. An index combines many markets into one value and provides its composition and weights.
You need market context. Start with News. Search stored articles, read the source record, and find related markets.
You need regulatory context. Start with Filings. Browse CFTC filings and connect them to the markets and articles they relate to.
You are comparing venues. Start with Reference rates. A rate puts prices for the same underlying market into one series.
You are connecting an AI agent. Start with MCP server. The agent can search by topic and use the returned id for detail or price history.
You need verified on-chain data. Start with Oracles. The SEDA proxy provides signed responses for supported index data.

Choose your data access

Use the public tier to try the API without an account. It returns a 15-minute-delayed snapshot of core market, event, index, and rate data.
Use an API key for realtime data, deeper history, news, semantic search, and MCP access. The key also gives you higher request limits and access to the full market and filing catalogs.

What you can build

Use market data for a research notebook, market monitor, or search experience. Use indices and rates when your product needs one series instead of a list of markets. Use MCP when an AI agent needs to choose its next lookup.
The public tier is a good place to test an idea. It requires no token and returns data delayed by 15 minutes. Add an API key when you need realtime values, deeper history, news, or higher request limits.

Go deeper