US Spot Bitcoin & Ethereum ETF Flows

ETF Flows MCP Server — Spot Bitcoin & Ethereum ETF Flows for AI Assistants

Give Claude, ChatGPT, Cursor, VS Code or any MCP client daily net flows for every US spot Bitcoin and Ethereum ETF — IBIT, FBTC, GBTC, ARKB, ETHA, FETH, ETHE and more.

• 🌐 Live data pages: Bitcoin ETF flows today · Ethereum ETF flows today · IBIT flows
• 🔌 Remote MCP server (no install): https://yasinozen.com/etf-flows/mcp
• 📄 REST API docs: yasinozen.com/etf-flows/api

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Quick start: remote server (recommended)

Claude → Settings → Connectors → Add custom connector → https://yasinozen.com/etf-flows/mcp

Claude Code

claude mcp add --transport http etf-flows https://yasinozen.com/etf-flows/mcp

Cursor / Windsurf / VS Code (mcp.json)

{
  "mcpServers": {
    "etf-flows": {
      "url": "https://yasinozen.com/etf-flows/mcp",
      "headers": { "X-API-Key": "YOUR_KEY" }
    }
  }
}

The key is optional. Clients that cannot send headers can use https://yasinozen.com/etf-flows/mcp?api_key=YOUR_KEY. One-click install links for Cursor and VS Code are on the setup page.

Tools

Tool	Description
get_etf_flow_summary	Latest day, 7/30-day, month-to-date, YTD and cumulative flows, streaks and top funds (remote server)
get_latest_etf_flows	Daily totals for the most recent trading days, optional per-fund breakdown
get_etf_flows_by_date_range / query_etf_flows_by_date_range	Daily totals between two dates
get_fund_flows	Daily flows and cumulative total for one ETF (e.g. IBIT)
get_pro_access_info	Plans and how to get a key

Example prompts: “Summarize spot Bitcoin ETF flows this week”, “Did IBIT have outflows in the last 10 days?”, “Compare Ethereum ETF flows in August and September.”

Run locally (stdio)

Requires uv.

{
  "mcpServers": {
    "etf-flows": {
      "command": "uv",
      "args": ["--directory", "/absolute/path/to/free-etf-flows-mcp", "run", "python", "mcp_server.py"],
      "env": { "ETF_FLOWS_API_KEY": "YOUR_KEY" }
    }
  }
}

Plans

	Preview (no key)	Free key	Pro ($9.99/mo)
History	7 trading days	90 trading days	Full, since Jan 2024
Delay	1 day	1 day	Same day
Per-fund data	–	✓	✓
CSV export	–	–	✓
Rate limit	10/min	30/min	120/min

👉 Get a free key · Upgrade to Pro

Data

Daily figures are sourced from the public ETF flow tables of Farside Investors and normalized to US dollars (parenthesized values become negative). See the methodology. This project is independent and not affiliated with Farside Investors or any ETF issuer. Not investment advice.

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Built by Yasin Özen ·