21btc.cc Bitcoin Data

cc.21btc/bitcoin-dataVersion 1.1.0

Live Bitcoin price, ETF flows, treasuries, on-chain metrics, fees, derivatives & wiki search.

Status

Responds65 msNov 14, 2026, 13:41 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 13:41 UTC
Latency: 65 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: EU hosting detected (detected, not a legal statement)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://21btc.cc/mcpResponds65 msNov 14, 2026, 13:41 UTC

No sign-in

Claude Code

claude mcp add --transport http bitcoin-data https://21btc.cc/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: bitcoin-data
Remote MCP server URL: https://21btc.cc/mcp

Cursor

{
  "mcpServers": {
    "bitcoin-data": {
      "url": "https://21btc.cc/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"bitcoin-data","type":"http","url":"https://21btc.cc/mcp"}'

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Tools

14 tools

Tools of 21btc.cc Bitcoin Data
	Description		Read-only	Idempotent	Open world
`get_changelog`Recent shipped changes to 21btc.cc with dates and links. Same data as the /changelog page and its RSS feed. Read-only.	Recent shipped changes to 21btc.cc with dates and links. Same data as the /changelog page and its RSS feed. Read-only.	No	Yes	Yes	No
`get_derivatives`BTC perpetual futures on Binance, Bybit, OKX and Deribit: open interest (BTC and USD), mark price, funding rate per interval and annualised, a 30-day Binance open interest history and recent OKX liquidations. Public keyless exchange APIs, cached 60 seconds. Liquidations cover one exchange only; no free all-exchange total exists. Not advice. Read-only.	BTC perpetual futures on Binance, Bybit, OKX and Deribit: open interest (BTC and USD), mark price, funding rate per interval and annualised, a 30-day Binance open interest history and recent OKX liquidations. Public keyless exchange APIs, cached 60 seconds. Liquidations cover one exchange only; no free all-exchange total exists. Not advice. Read-only.	No	Yes	Yes	Yes
`get_etf_flows`US spot Bitcoin ETFs: BTC held, fee, latest/5d/20d/cumulative flows (USD millions). Same data as GET /api/v1/etf. Read-only.	US spot Bitcoin ETFs: BTC held, fee, latest/5d/20d/cumulative flows (USD millions). Same data as GET /api/v1/etf. Read-only.	No	Yes	Yes	Yes
`get_events`Upcoming Bitcoin-only conferences with dates, city, official URL, ticket offer (price only where verified on the official page) and the 21btc.cc event page where one exists. Dates in the venue's local time. Read-only.	Upcoming Bitcoin-only conferences with dates, city, official URL, ticket offer (price only where verified on the official page) and the 21btc.cc event page where one exists. Dates in the venue's local time. Read-only.	No	Yes	Yes	No
`get_fees`Recommended Bitcoin transaction fees in sat/vB (fastest, 30 minutes, 1 hour, economy, minimum) and mempool size, from mempool.space. Read-only.	Recommended Bitcoin transaction fees in sat/vB (fastest, 30 minutes, 1 hour, economy, minimum) and mempool size, from mempool.space. Read-only.	No	Yes	Yes	Yes
`get_holder_distribution`How many Bitcoin addresses hold at least 0.1, 1, 10, 100, 1,000 and 10,000 BTC and how coins split across holder classes. Addresses, not people. Source: BitInfoCharts and four cross-checks, with an as-of date. Read-only.	How many Bitcoin addresses hold at least 0.1, 1, 10, 100, 1,000 and 10,000 BTC and how coins split across holder classes. Addresses, not people. Source: BitInfoCharts and four cross-checks, with an as-of date. Read-only.	No	Yes	Yes	No
`get_holders`Bitcoin holders: companies, funds, governments (BTC, 7-day change). Same data as GET /api/v1/holders. Read-only.	Bitcoin holders: companies, funds, governments (BTC, 7-day change). Same data as GET /api/v1/holders. Read-only.	No	Yes	Yes	Yes
`get_network_stats`Bitcoin network now: block height, hashrate (EH/s), difficulty and the next difficulty adjustment, mempool size, average block time, halving countdown. Sources: mempool.space, blockchain.info, Blockchair. Read-only.	Bitcoin network now: block height, hashrate (EH/s), difficulty and the next difficulty adjustment, mempool size, average block time, halving countdown. Sources: mempool.space, blockchain.info, Blockchair. Read-only.	No	Yes	Yes	Yes
`get_price`Live BTC price in USD and 7 other currencies (official FX reference rates). Same data as GET /api/v1/price. Read-only.	Live BTC price in USD and 7 other currencies (official FX reference rates). Same data as GET /api/v1/price. Read-only.	No	Yes	Yes	Yes
`get_rainbow_model`Rainbow model fit parameters and today's deviation (a model, not a forecast). Same data as GET /api/v1/rainbow. Read-only.	Rainbow model fit parameters and today's deviation (a model, not a forecast). Same data as GET /api/v1/rainbow. Read-only.	No	Yes	Yes	Yes
`get_risk_score`Risk On/Off composite score (0–100) with every input, formula and source. Same data as GET /api/v1/risk. Read-only.	Risk On/Off composite score (0–100) with every input, formula and source. Same data as GET /api/v1/risk. Read-only.	No	Yes	Yes	Yes
`get_stock_to_flow`Stock-to-flow ratio and PlanB 2019 model value (a model, not a forecast). Same data as GET /api/v1/stock-to-flow. Read-only.	Stock-to-flow ratio and PlanB 2019 model value (a model, not a forecast). Same data as GET /api/v1/stock-to-flow. Read-only.	No	Yes	Yes	Yes
`get_volatility`Annualised realised volatility over 7/30/90/365 days and by year. Same data as GET /api/v1/volatility. Read-only.	Annualised realised volatility over 7/30/90/365 days and by year. Same data as GET /api/v1/volatility. Read-only.	No	Yes	Yes	Yes
`search_site`Search the site's pages, Bitcoin glossary terms, wiki articles, blog posts, videos, pools, wallets and hacks. Matches English and Russian. Returns title, kind, URL and a short summary. Use kind=glossary for definitions. Read-only.	Search the site's pages, Bitcoin glossary terms, wiki articles, blog posts, videos, pools, wallets and hacks. Matches English and Russian. Returns title, kind, URL and a short summary. Use kind=glossary for definitions. Read-only.	No	Yes	Yes	No

Details

Registry status: Active
Published: Oct 28, 2026
Updated: Oct 28, 2026
Website: https://21btc.cc/mcp⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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