Tengu FIRM — MCP Server

One API key. 336 market & quant data tools. Built for AI agents.

Tengu FIRM is a hosted Model Context Protocol server that exposes real-time and historical market data, SEC filings, insider/institutional/ congressional trades, fundamentals, quant signals, cited verdicts, private markets, and macro data — as native agent tools over MCP Streamable HTTP.

• Endpoint: https://firm.tengu.co/mcp
• Transport: MCP Streamable HTTP (JSON-RPC 2.0) — initialize, tools/list, tools/call
• Auth: send your key as the X-API-Key header (or Authorization: Bearer <key>)
• Server: tengu-firm · manifest 2.114
• Get a key (free, no card): https://tengu.co/api

Every tools/call proxies to a firm.tengu.co REST endpoint, so tier gating and credit metering apply exactly as on REST. Data and structured signals — not investment advice.

Connect

claude.ai (recommended for a hosted server)

Settings → Connectors → Add custom connector → URL https://firm.tengu.co/mcp, and set the X-API-Key header to your key.

Claude Desktop / Cursor (via mcp-remote)

Desktop clients launch MCP servers as local processes, so bridge to the remote endpoint with mcp-remote:

{
  "mcpServers": {
    "tengu-firm": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://firm.tengu.co/mcp",
               "--header", "X-API-Key:YOUR_TENGU_API_KEY"]
    }
  }
}

Any remote-capable MCP client

{
  "mcpServers": {
    "tengu-firm": {
      "url": "https://firm.tengu.co/mcp",
      "headers": { "X-API-Key": "YOUR_TENGU_API_KEY" }
    }
  }
}

Verify it's reachable

curl -s -X POST https://firm.tengu.co/mcp \
  -H 'Content-Type: application/json' \
  -H 'X-API-Key: YOUR_TENGU_API_KEY' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' | jq '.result.tools | length'

Tool catalogue

Live discovery (no auth required):

• Capabilities: https://firm.tengu.co/api/capabilities
• OpenAPI 3.1: https://firm.tengu.co/api/openapi.json

Example tools

• tengu_snapshot — live price snapshot for a ticker
• tengu_crypto — real-time crypto quote (439 pairs)
• tengu_insider_clusters — companies where multiple insiders bought around the same time
• tengu_v3_fundamentals_full — full fundamentals (income, balance sheet, cash flow, 100+ metrics)

Data surfaces: real-time + 30yr OHLCV (stocks & crypto) · 100+ fundamentals · SEC filings (10-K/10-Q/8-K) · insider trades (Form 4) · institutional holdings (13F) · congressional trades (STOCK Act) · news sentiment (57 sources) · quant factor scores · cited verdicts · private markets (10.5M companies / 3M deals / 646K investors) · macro (CPI, rates, employment).

Pricing

Start free (no card): https://tengu.co/api

Links

• Homepage: https://tengu.co/api
• Capabilities: https://firm.tengu.co/api/capabilities
• OpenAPI: https://firm.tengu.co/api/openapi.json

License

MIT — see LICENSE. "Tengu" and "FIRM" are marks of Tengu, Inc.