API Documentation

Complete documentation for all 8 free tools in our Blockchain MCP Server.

1. get_block_number

Get the current latest block number on Base.

Parameters: None
Returns: string — Latest block number
2. get_gas_price

Get current gas price on Base.

Parameters: None
Returns: string — Gas price in wei
3. get_balance

Get ETH balance of an address on Base.

Parameters:
• address (string, required) — Ethereum address
Returns: string — ETH balance
4. get_transaction

Get transaction details by hash on Base.

Parameters:
• tx_hash (string, required) — Transaction hash
Returns: object — Transaction details
5. get_address_label

Get a human-readable label for an EVM address (100K+ entity labels).

Parameters:
• address (string, required) — Ethereum address
Returns: string — Address label
6. get_usdc_balance

Get USDC balance of an address on Base (stablecoin balance).

Parameters:
• address (string, required) — Ethereum address
Returns: string — USDC balance
7. explain_transaction_simple

Explain a transaction in plain English: who sent what to whom, with address labels.

Parameters:
• tx_hash (string, required) — Transaction hash
Returns: string — Plain English explanation
8. search_labels_by_category

Search all labeled addresses by category (e.g. exchange, bridge, protocol, scam).

Parameters:
• category (string, required) — Category to search
Returns: string — Up to 50 matching addresses

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