Mempool MCP server
The mempool.space website invented the concept of visualizing a Bitcoin node's mempool as projected blocks.
Mempool is not a separate install. One Activepieces MCP server exposes it alongside 760+ other apps, behind a single URL.
- Tools
- 35
- Works with
- Any MCP client
- License
- MIT, open source
- Updated
- September 2026
About the Mempool MCP server
Connect Mempool once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches Mempool and 760+ other apps over a single connection, on our cloud or a self-hosted install.
Tools
Mempool tools your AI can run
Once connected, your assistant can call any of these Mempool actions by asking in plain language.
Get Difficulty Adjustment
Returns details about Bitcoin difficulty adjustment
Get Price
Returns bitcoin latest price in main currencies
Get Historical Price
Returns bitcoin historical price in main currencies
2 fields
Get Address Details
Returns address details including chain and mempool stats
1 field
Get Address Transactions
Returns transaction history (up to 50 mempool + 25 confirmed transactions)
2 fields
Get Address Transactions (Chain)
Returns confirmed transaction history (25 transactions per page)
2 fields
Get Address Transactions (Mempool)
Returns unconfirmed transactions (up to 50)
1 field
Get Address UTXO
Returns unspent transaction outputs for an address
1 field
Validate Address
Validates a Bitcoin address
1 field
Get Mempool Blocks Fees
Returns current mempool as projected blocks with fee rates and sizes
Get Recommended Fees
Returns recommended fee rates for different transaction confirmation targets
Get Block
Returns detailed block information
1 field
Get Block Header
Returns the hex-encoded block header
1 field
Get Block Height
Returns the hash of the block currently at specified height
1 field
Get Block Timestamp
Returns the height and hash of the block closest to the given timestamp
1 field
Get Block Raw
Returns the raw block representation in binary
1 field
Get Block Status
Returns the confirmation status of a block
1 field
Get Block Tip Height
Returns the height of the last block
Get Block Tip Hash
Returns the hash of the last block
Get Block Transaction ID
Returns the transaction at specified index within the block
2 fields
Get Block Transaction IDs
Returns a list of all transaction IDs in the block
1 field
Get Block Transactions
Returns a list of transactions in the block (up to 25 transactions)
2 fields
Get Blocks (Bulk)
Returns details on the range of blocks between minHeight and maxHeight, inclusive, up to 10 blocks
2 fields
Get Transaction
Retrieve transaction details by transaction ID
1 field
Get Transaction Hex
Get the raw transaction in hex format
1 field
Get Transaction Merkleblock Proof
Get the merkle block proof for a transaction
1 field
Get Transaction Merkle Proof
Get the merkle proof for a transaction
1 field
Get Transaction Output Spend Status
Get the spending status of a specific transaction output
2 fields
Get All Transaction Output Spend Statuses
Get the spending status of all outputs in a transaction
1 field
Get Raw Transaction
Get the raw transaction in hex format
1 field
Get Transaction RBF Timeline
Get the Replace-By-Fee (RBF) timeline for a transaction
1 field
Get Transaction Status
Get the confirmation status of a transaction
1 field
Get Transaction Times
Get timing information for a transaction including first seen and block entry times
1 field
Post Transaction
Submit a raw transaction to the network
1 field
Custom API Call
Make a custom API call to a specific endpoint
10 fields
Give your assistant Mempool
Connect Mempool once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 760+ other apps. Free to start.
Mempool MCP, answered.
No. That is the point of it. One Activepieces server exposes Mempool alongside every other piece you connect, so your client keeps a single connection.