bitcoin-mcp

Give any AI agent Bitcoin superpowers — fee intelligence, mempool analysis, and 49 tools. Zero config, one command.

49 tools · 116 tests · 6 prompts · 7 resources · Zero config · MIT licensed

pip install bitcoin-mcp

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"]
    }
  }
}

Why bitcoin-mcp?

• Fee intelligence that saves real money — know the cheapest time to send, compare fee tiers, estimate exact costs before broadcasting
• Zero config — works instantly with the free hosted Satoshi API, or connect your own Bitcoin Core node
• 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 49 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_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
query_remote_api	Query the Satoshi API directly

Get More Requests (Free)

bitcoin-mcp works immediately with 1,000 requests/day (anonymous). Register for a free API key to get 10,000/day (10x):

1. Visit bitcoinsapi.com
2. Register for a free key (takes 10 seconds)
3. Set the SATOSHI_API_KEY environment variable in your MCP config

Configuration

All environment variables are optional. bitcoin-mcp falls back to the free hosted Satoshi API when no local node is configured.

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	Override hosted API URL	https://bitcoinsapi.com
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

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

Links

• Satoshi API — the hosted backend powering zero-config mode
• 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. It is the most comprehensive Bitcoin MCP server available, bridging AI agents and Bitcoin infrastructure through the Model Context Protocol.

Related projects:

• Satoshi API — Bitcoin fee intelligence API (powers zero-config mode)
• baip-python — Bitcoin Agent Identity Protocol
• bitcoin-fee-observatory — Fee market analytics dashboard

License

MIT