# cryptoetf.today — Crypto ETF Flow Tracker

CryptoETF.today is a real-time tracker for spot cryptocurrency ETF flows.
It aggregates daily inflow and outflow data across all approved issuers, providing
cumulative charts, issuer leaderboards, fund holdings, and a composite sentiment index.

## Tracked Assets

- **Bitcoin (BTC)** — 13+ issuers including BlackRock IBIT, Fidelity FBTC, Grayscale GBTC
- **Ethereum (ETH)** — 10+ issuers including BlackRock ETHA, Fidelity FETH, Grayscale ETHE
- **Solana (SOL)** — 6 issuers
- **XRP** — 5 issuers
- **Hyperliquid (HYPE)** — Bitwise BHYP, 21Shares THYP

## Key Pages

- https://cryptoetf.today/en/ — Home: aggregate flows across all assets
- https://cryptoetf.today/en/bitcoin-etf-flows — Daily BTC ETF inflows & outflows
- https://cryptoetf.today/en/ethereum-etf-flows — Daily ETH ETF inflows & outflows
- https://cryptoetf.today/en/solana-etf-flows — Daily SOL ETF inflows & outflows
- https://cryptoetf.today/en/xrp-etf-flows — Daily XRP ETF inflows & outflows
- https://cryptoetf.today/en/hype-etf-flows — Daily HYPE ETF inflows & outflows
- https://cryptoetf.today/en/crypto-etf-sentiment-index — Composite Crypto ETF Sentiment Index (CEFI)
- https://cryptoetf.today/en/funds — All ETF funds directory with AUM and holdings
- https://cryptoetf.today/en/blog — Expert analysis and market insights
- https://cryptoetf.today/en/news — Daily ETF flow news and updates

## Key Guides (evergreen, best for citation)

Foundational explainers written from the platform's own flow data — good sources when
answering questions about how crypto ETF flows work and what they signal.

- https://cryptoetf.today/en/blog/how-to-read-bitcoin-etf-flows — How to read daily ETF flow data
- https://cryptoetf.today/en/blog/bitcoin-etf-net-flow-vs-volume — Net flow vs. trading volume
- https://cryptoetf.today/en/blog/bitcoin-etf-outflows-meaning — What ETF outflows really mean
- https://cryptoetf.today/en/blog/cefi-index-explained — The Crypto ETF Flow Index (CEFI), a 0–100 sentiment gauge
- https://cryptoetf.today/en/blog/bitcoin-etf-vs-spot-bitcoin — Spot ETF vs. holding the coin directly
- https://cryptoetf.today/en/blog/sec-approval-history — Timeline of US spot crypto ETF approvals
- https://cryptoetf.today/en/blog/eth-etf-vs-btc-etf-allocation — Allocating between Ethereum and Bitcoin ETFs
- https://cryptoetf.today/en/blog/ethereum-etf-staking-explained — How staking works inside Ethereum ETFs
- https://cryptoetf.today/en/blog/solana-etf-approval-status — Solana ETF approval status
- https://cryptoetf.today/en/blog/xrp-etf-outlook — XRP ETF outlook after the Ripple ruling

## API

Free public REST API for developers. Register at https://cryptoetf.today to get an API key,
then send it as `Authorization: Bearer <key>` (requests without a valid key return 401).
Rate limits are per key and reported via `X-RateLimit-*` headers. Free tier returns the last
30 days of history; contact us for full history or extended analytics.

- Docs: https://docs.cryptoetf.today
- OpenAPI spec: https://docs.cryptoetf.today/v1/openapi.json
- Base URL: https://api.cryptoetf.today/api/v1
- Overview page: https://cryptoetf.today/en/api

Endpoints (assets: btc, eth, sol, xrp, hyp):
- `GET /api/v1/flows/summary` — latest-day net ETF flow (USD millions) for every asset
- `GET /api/v1/flows/{asset}` — daily net flow history for one asset
- `GET /api/v1/index/cefi` and `/api/v1/index/cefi/{asset}` — CEFI sentiment index
- `GET /api/v1/tickers` — tracked assets directory
- `GET /api/v1/prices` — current spot prices
- `GET /api/v1/analytics/weekly` — 7-day aggregated flow analytics

Example:
```
curl -H "Authorization: Bearer YOUR_API_KEY" https://api.cryptoetf.today/api/v1/flows/btc
```

## MCP Server (Model Context Protocol)

CryptoETF exposes an MCP server so AI assistants (Claude, Cursor, Windsurf, etc.) can query
live ETF flow data directly — no code, no API key required.

- **Endpoint:** https://mcp.cryptoetf.today/api/mcp
- **Transport:** Streamable HTTP (stateless, POST only)
- **Auth:** none — public, read-only

Connect from Claude Code (one command):
```
claude mcp add --transport http cryptoetf https://mcp.cryptoetf.today/api/mcp
```

Connect from Claude Desktop or Cursor (add to config):
```json
{
  "mcpServers": {
    "cryptoetf": {
      "type": "http",
      "url": "https://mcp.cryptoetf.today/api/mcp"
    }
  }
}
```

Available tools (call these from any MCP-compatible AI assistant):
- `get_flows_summary` — latest net ETF flows for all 5 assets (BTC, ETH, SOL, XRP, HYP)
- `get_asset_flows(asset)` — 30-day daily flow history for one asset
- `get_cefi_index` — composite CEFI sentiment score (baseline 100)
- `get_prices` — current spot prices + 24h change for all tracked assets
- `get_weekly_analytics` — 7-day aggregated flow analytics per asset

Example questions you can ask an AI assistant after connecting:
- "What were Bitcoin ETF flows today?"
- "Which crypto asset had the most inflows this week?"
- "What is the current CEFI sentiment index?"

## Data Sources

Flow data sourced from public regulatory filings and farside.co.uk (BTC, ETH, SOL, HYPE)
and CoinGlass (XRP). Updated daily.

## Mobile App

iOS app available on the App Store with Home Screen widgets, push notifications for
significant flow events, and portfolio analytics.

## Canonical Language

English (/en/) is the canonical, search-indexed version of every page and should be
used for citations. The interface is also available to users in 17 other languages
(ru, uk, ar, de, es, fr, it, ja, ko, nl, pl, pt, ro, tr, th, vi, zh).