DepthFeed MCP Server

Give Claude, Cursor, Codex, and ChatGPT live prediction-market order-book data.

DepthFeed runs a remote Model Context Protocol (MCP) server so AI agents can pull Polymarket, Kalshi, and Limitless order-book depth and price data straight into a session — no SDK, no glue code. Listed in the official MCP registry as com.depthfeed/depthfeed.

https://api.depthfeed.com/mcp

It's a remote, Streamable-HTTP server and keyless to start: add the endpoint and your agent can query BTC Polymarket markets immediately. Add a DepthFeed API key (Authorization: Bearer df_…) to unlock all 7 assets (BTC/ETH/SOL/XRP/DOGE/BNB/HYPE), Kalshi, Limitless, the full order-book ladder, and deep history — the same plan gating as the REST API.

Install

Claude Code

claude mcp add --transport http depthfeed https://api.depthfeed.com/mcp
# with a key:
claude mcp add --transport http depthfeed https://api.depthfeed.com/mcp \
  --header "Authorization: Bearer df_YOURKEY"

Cursor — ~/.cursor/mcp.json (or .cursor/mcp.json)

{ "mcpServers": { "depthfeed": { "url": "https://api.depthfeed.com/mcp" } } }

VS Code (Copilot agent mode)

code --add-mcp '{"name":"depthfeed","type":"http","url":"https://api.depthfeed.com/mcp"}'

Claude Desktop — Settings → Connectors → Add custom connector → paste the URL.

ChatGPT — Settings → Connectors → enable Developer Mode → add the URL.

OpenAI Codex — ~/.codex/config.toml

[mcp_servers.depthfeed]
url = "https://api.depthfeed.com/mcp"
# bearer_token_env_var = "DEPTHFEED_TOKEN"   # optional, for a key

Any MCP-capable client works (Windsurf, Cline, Zed, …) — add https://api.depthfeed.com/mcp as a remote/custom MCP server.

Tools

All tools are read-only and return the same JSON as the DepthFeed REST API.

Tool	Returns
polymarket_all_markets	All currently discoverable Polymarket markets across supported assets
polymarket_search_markets	Polymarket up/down crypto markets for a coin
polymarket_get_market	A single Polymarket market by id or slug
polymarket_get_snapshots	Polymarket order-book history (time series)
kalshi_search_markets	Kalshi crypto markets (paid)
kalshi_get_orderbook	Latest Kalshi yes/no depth by ticker (paid)
kalshi_get_snapshots	Kalshi yes/no depth history (paid)
limitless_search_markets	Open Limitless markets on Base (paid)
limitless_get_orderbook	Latest Limitless L2 depth by slug (paid)
limitless_get_snapshots	Limitless L2 depth history (paid)
screener	Cross-venue top-of-book snapshot for all assets
whoami	The session's plan, limits, and coin access

Live example (no key)

# List tools
curl -sS https://api.depthfeed.com/mcp -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

# Keyless BTC Polymarket markets
curl -sS https://api.depthfeed.com/mcp -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"polymarket_search_markets","arguments":{"coin":"btc","limit":3}}}'

Links

• Website: https://depthfeed.com
• MCP landing page: https://depthfeed.com/mcp
• Guide: https://depthfeed.com/resources/prediction-market-mcp-server
• API docs: https://depthfeed.com/docs
• Python clients: polymarket-price-data · kalshi-price-data

Contributing and support

• Propose documentation or integration improvements in CONTRIBUTING.md.
• Ask usage questions through DepthFeed support.
• Report security concerns privately using SECURITY.md.

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Independent research project. Not affiliated with or endorsed by Polymarket, Kalshi, Limitless, Binance, or any exchange.