Developer API & MCP

Signal8 API & MCP Pricing

One REST API and a hosted MCP server for SEC filings, insider & congressional trades, institutions, and live market data. Flat monthly pricing with per-minute rate limits and daily request caps, and no per-request charges. Connect Claude, ChatGPT, Cursor, or any MCP client, or call the REST API directly from your app.

Plans

Signal8 Pro unlocks the full REST API and the hosted MCP server at 120 req/min and 10,000 requests/day, and it is the same subscription that unlocks everything else on Signal8. Both plans include the live Try-It console and the hosted MCP server for Claude, Cursor & co. Cancel any time.

Free

No API or MCP access

Full access to the Signal8 web app
Company profiles, quotes, news and SEC filings
Watchlists and alerts

Start free

Recommended

Pro

$59/mo

or $588/yr ($49/mo, Save $120)

120 req/min

10,000 req/day

Developer API and hosted MCP server access
120 req/min
10,000 requests/day, 3 API keys
Every paid endpoint: insiders, compliance, congress, calendar, historical, dilution
Live Try-It + hosted MCP server
Plus everything else in Signal8 Pro: dilution snapshots, Terminal, AI analysis

Get Signal8 Pro

Want to see it in an AI client first? Explore the MCP server.

The Signal8 MCP server is also listed on Smithery.