Adjacent News: what it does, what it costs, where it stops

What it does

The catalog lists 54 indices. Political indices (Presidential, Senate and House, on Republican and Democratic tracks) use a 50 to 150 scale where 100 is neutral and value minus 50 equals the implied win probability in percent, so a reading of 109 is about 59%. NFL Team Indices launched on September 4, 2026.

The docs list six data products: market data (prices, trades, quotes, candles), indices, reference rates (unified series across venues or rolling contracts), news articles linked to markets and indices, CFTC filings with status tracking, and an MCP server.

• Public API: https://api.adjacent.markets/api/v1/public, no auth, CORS-open, 15-minute delay
• MCP server: https://mcp.adjacent.markets/mcp, delayed by default, real-time with an apiKey parameter
• Docs: https://docs.adjacent.markets/ with a machine-readable API catalog
• Latest article at time of checking: The Houthis Are Escalating, September 8, 2026

Pricing

The public tier is free and delayed 15 minutes. The realtime tier uses Bearer tokens created in app settings with scopes your account can grant. The pricing page is a client-rendered route that returned no plan text to our fetch, so realtime prices and quotas are not recorded here.

Venues and data

The API docs name Kalshi and Polymarket as the venues aggregated. Neither the home page nor the docs we fetched state a total market count.

Where it falls short

It is not an alert service. There is no price trigger, whale feed or push channel; you poll the API or read the articles.

Fifteen minutes of delay on the free tier rules it out for anything intraday. The index scale is Adjacent's own construction, so an index level is not a price you can trade.

Who should use it

A researcher or a trader building a pipeline who wants news, filings and prices in one schema, and can live with delayed data or is willing to buy the realtime key.