Bortlesboat/bitcoin-mcp

Give any AI agent Bitcoin superpowers — fee intelligence, mempool analysis, and 50 tools backed by your Bitcoin node or compatible API.

PyPI Downloads Tests License: MIT Python 3.10+ OpenSats

50 standard tools · 6 prompts · 8 resources · Bitcoin Core or compatible API backend · MIT licensed

If bitcoin-mcp is useful to you, consider giving it a star — it helps others discover the project.

pip install bitcoin-mcp

bitcoin-mcp needs a Bitcoin data backend. It auto-detects a local Bitcoin Core/Knots node from its cookie or RPC settings. Without a local node, set SATOSHI_API_URL to a compatible deployment.

Service status: the public Satoshi API previously hosted at bitcoinsapi.com is paused and should not be treated as a working default. Use a local node or an explicitly configured compatible API.

Quick Start

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "bitcoin": {
      "command": "uvx",
      "args": ["bitcoin-mcp"]
    }
  }
}

Claude Code

claude mcp add bitcoin -- uvx bitcoin-mcp

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "bitcoin": {
      "command": "uvx",
      "args": ["bitcoin-mcp"]
    }
  }
}

VS Code

Add to .vscode/mcp.json:

{
  "servers": {
    "bitcoin": {
      "command": "uvx",
      "args": ["bitcoin-mcp"]
    }
  }
}

Zed

Add to your Zed settings.json under context_servers:

{
  "context_servers": {
    "bitcoin": {
      "command": "uvx",
      "args": ["bitcoin-mcp"]
    }
  }
}

See the Zed MCP docs for the current settings location and custom server flow.

Docker

docker build -t bitcoin-mcp .
docker run -i bitcoin-mcp

Or with docker compose:

docker compose up

Pass environment variables to connect to a local Bitcoin Core node or a compatible API:

docker run -i -e BITCOIN_RPC_HOST=host.docker.internal -e BITCOIN_RPC_PORT=8332 bitcoin-mcp
# or
docker run -i -e SATOSHI_API_URL=https://your-api.example bitcoin-mcp

Ask whether to send Bitcoin now

Use this as the first useful activation path after install:

"I need to send a Bitcoin transaction today. Use bitcoin-mcp to decide whether to send now or wait, and show the fee rate you used."

Expected path:

1. The agent calls get_fee_recommendation.
2. The answer gives a clear send now or wait recommendation with fee rates in sat/vB.
3. If the backend is unavailable, configure a local node or set SATOSHI_API_URL before retrying.

After it works, Star this repo and share a short showcase with the prompt, tool call, and outcome so other Bitcoin agent builders can see the path.

Agent Integration

For repos that need Bitcoin tools, add bitcoin-mcp to the agent's MCP config and configure one of its supported backends:

• Local Bitcoin Core/Knots RPC settings: BITCOIN_RPC_HOST, BITCOIN_RPC_PORT, and optional credentials or datadir
• Compatible remote API: SATOSHI_API_URL and, when required, SATOSHI_API_KEY
• Satoshi API source and integration reference: https://github.com/Bortlesboat/bitcoin-api/blob/main/docs/AGENT_INTEGRATION.md

Generated HTTP examples should use canonical Satoshi API /api/v1 paths.

Why bitcoin-mcp?

• Fee intelligence that saves real money — know the cheapest time to send, compare fee tiers, estimate exact costs before broadcasting
• Backend choice — use your own Bitcoin Core/Knots node or an explicitly configured compatible API
• First Bitcoin MCP server on the Anthropic Registry

Top Use Cases

Ask your AI agent:

Prompt	What it does
"What's the cheapest time to send Bitcoin today?"	Fee recommendation with savings breakdown
"Analyze the current mempool congestion"	Real-time mempool depth, fee tiers, pending tx count
"How much would I save waiting 6 blocks vs next block?"	Side-by-side fee comparison across confirmation targets
"Search for this transaction: abc123..."	Full transaction decode with inscription detection
"Give me a situation summary of Bitcoin right now"	Price, fees, mempool, mining, difficulty — one call

Full Tool Reference

All 50 standard tools by category

Fee Intelligence

Tool	Description
get_fee_recommendation	Optimal fee rate with urgency tiers and savings tips
get_fee_estimates	Fee estimates across all confirmation targets
estimate_smart_fee	Fee estimate for a specific confirmation target
compare_fee_estimates	Side-by-side comparison of fee sources
estimate_transaction_cost	Exact cost estimate for a transaction before sending

Blocks & Transactions

Tool	Description
analyze_block	Deep analysis of any block by height or hash
get_block_stats	Statistical breakdown of a block
get_block_count	Current chain height
compare_blocks	Compare two blocks side by side
search_blocks	Search a range of blocks
analyze_transaction	Full transaction analysis with inscription detection
decode_raw_transaction	Decode a raw transaction hex
send_raw_transaction	Broadcast a signed transaction
check_utxo	Check if a UTXO is spent or unspent

Mempool

Tool	Description
analyze_mempool	Full mempool analysis — depth, fees, congestion
get_mempool_info	Mempool size, bytes, fee floor
get_mempool_entry	Details for a specific unconfirmed transaction
get_mempool_ancestors	Ancestor chain for a mempool transaction

Mining

Tool	Description
get_mining_info	Current mining difficulty, hashrate, block reward
analyze_next_block	Preview of the next block template
get_mining_pool_rankings	Top mining pools by recent blocks
get_difficulty_adjustment	Time and percentage of next difficulty change
get_halving_countdown	Blocks and estimated time until next halving

Network & Status

Tool	Description
get_blockchain_info	Chain state, verification progress, softfork status
get_network_info	Node version, connections, relay info
get_node_status	Connection status and node health
get_peer_info	Connected peer details
get_chain_tips	Active and stale chain tips
get_chain_tx_stats	Transaction throughput over N blocks
get_utxo_set_info	UTXO set size and total supply
get_supply_info	Circulating supply, inflation rate, percent mined
get_situation_summary	Aggregated overview — price, fees, mempool, mining
get_btc_price	Current BTC/USD price
get_market_sentiment	Fear/greed index and market indicators

Address & UTXO

Tool	Description
get_address_utxos	UTXOs for an address
validate_address	Validate and classify a Bitcoin address

Indexed Address (requires blockchain indexer)

Tool	Description
get_address_balance	Total received/sent/balance, tx count, first/last seen
get_address_history	Paginated transaction history with net value change
get_address_transactions	Transaction history with per-transaction value details
get_indexed_transaction	Enriched tx with resolved input addresses + spent status
get_indexer_status	Sync progress, ETA, blocks/sec

Security

Tool	Description
analyze_psbt_security	Security analysis of a Partially Signed Bitcoin Transaction
explain_inscription_listing_security	Security guide for ordinal inscription listings

Utility

Tool	Description
search_blockchain	Universal search — address, txid, block hash, or height
generate_keypair	Generate a new Bitcoin keypair
explain_script	Decode and explain a Bitcoin script
decode_bolt11_invoice	Decode a Lightning Network BOLT11 invoice
describe_rpc_command	Help text for any Bitcoin Core RPC command
list_rpc_commands	List all available RPC commands
decode_xpub	Decode and inspect an extended public key

Optional Remote API Tool

query_remote_api is registered only when SATOSHI_API_URL is set and the l402 extra is installed. It queries canonical /api/v1 routes on that explicitly configured endpoint.

Configuration

Configure either a local Bitcoin Core/Knots node or a compatible remote API. If neither is available, bitcoin-mcp exits its connection check with a setup error instead of silently selecting an unavailable public service.

CLI Flags

bitcoin-mcp supports the following runtime flags:

Flag	Values	Default	Description
--transport	stdio, sse, streamable-http	stdio	MCP transport to run
--host	hostname / IP	127.0.0.1 for HTTP transports	Bind host for sse and streamable-http
--port	integer	8000 for HTTP transports	Bind port for sse and streamable-http
--log-level	DEBUG, INFO, WARNING, ERROR	INFO	Server log verbosity

Example:

bitcoin-mcp --transport sse --host 127.0.0.1 --port 8000 --log-level DEBUG

Variable	Description	Default
BITCOIN_RPC_HOST	Bitcoin Core RPC host	127.0.0.1
BITCOIN_RPC_PORT	Bitcoin Core RPC port	Auto by network
BITCOIN_NETWORK	mainnet, testnet, signet, or regtest	mainnet
SATOSHI_API_URL	Compatible Satoshi API base URL	None
SATOSHI_API_KEY	API key for authenticated access	None

To connect to a local Bitcoin Core node:

{
  "mcpServers": {
    "bitcoin": {
      "command": "uvx",
      "args": ["bitcoin-mcp"],
      "env": {
        "BITCOIN_RPC_HOST": "127.0.0.1",
        "BITCOIN_RPC_PORT": "8332"
      }
    }
  }
}

Prompts & Resources

6 built-in prompts for common workflows: analyze_fee_environment, investigate_transaction, monitor_mempool_fees, taproot_adoption_report, network_health_report, track_transaction

8 resources for context injection: bitcoin://connection/status, bitcoin://node/status, bitcoin://fees/current, bitcoin://fees/history, bitcoin://mempool/snapshot, bitcoin://protocol/script-opcodes, bitcoin://protocol/address-types, bitcoin://protocol/sighash-types

Links

• Satoshi API source — optional compatible backend implementation (public hosted service currently paused)
• Anthropic MCP Registry — io.github.Bortlesboat/bitcoin-mcp
• PyPI
• GitHub
• Full tool documentation

Examples

See the examples/ folder for documented usage patterns:

• Fee Analysis — find optimal send timing
• Mempool Monitor — track congestion
• Transaction Investigation — decode and analyze transactions
• Block Analysis — inspect and compare blocks

Support This Project

bitcoin-mcp is free, open-source Bitcoin infrastructure. Support development through OpenSats.

Contributing

Contributions are welcome. See CONTRIBUTING.md for guidelines, including how to add new tools and the PR checklist.

Please report security vulnerabilities privately — see SECURITY.md.

About

bitcoin-mcp is created and maintained by Andrew Barnes, bridging AI agents and Bitcoin infrastructure through the Model Context Protocol.

Related projects:

• Satoshi API — Bitcoin fee intelligence API, 108 endpoints, usable as a self-hosted compatible backend
• ChainPulse — AI-powered Bitcoin network intelligence CLI
• BAIP-1 — Bitcoin Agent Identity Protocol
• bitcoin-fee-observatory — Fee market analytics dashboard

License

MIT