3xpl.com JSON API MCP server

Overview

3xpl API in form of a Model Context Protocol (MCP) server.

Allows LLMs to interact with data on 48 blockchains.

This repository can also be an example of 3xpl JSON API usage, see details in the code.

List of available tools

name	description	status
resolve_ens_domain	resolves an ENS domain to a regular address	✅
detect_blockchains	retrieve a list of blockchains on which a transaction/address is present	✅
get_latest_block	get latest block height in specified blockchain	✅
get_average_fee_24h_usd	retrieves average transaction fee for last 24 hours in specified blockchain in US dollars.	✅
get_mempool_events_count	get the number of unconfirmed events(transfers, inputs/outputs, not transactions) at the moment in the memory pool of provided blockchain	✅
get_events_count_24h	retrieve number of events(transfers, inputs/outputs, not whole transactions) in last 24h for provided blockchain	✅
get_block_overview	extract short summary about a block in provided blockchain	✅
get_address_overview	extract short summary about an address in provided blockchain	✅
get_transaction_overview	extract short summary about a transaction in provided blockchain(to be improved)	✅
aggregate_block_transactions	aggregate transactions in a block	⏳
aggregate_transaction_transfers	aggregate individual transfers in a transactions	⏳
aggregate_address_balances	aggregate balances for an address with	⏳
aggregate_address_transactions	aggregate confirmed transactions for an address	⏳
aggregate_address_mempool	aggregate pending transactions for an address	⏳

List of available prompts

name	description
get_blockchain_info	makes LLM dig deeper into data for providing the most fulfilled response.

Lists will expand soon, stay tuned!

Installation

# get the repository
git clone https://github.com/exekerey/3xpl-mcp.git
cd 3xpl-mcp

# create and activate virtual environment
uv venv 
source .venv/bin/activate

# install dependencies
uv pip install -e .

MCP configuration:

{
  "mcpServers": {
    "3xpl_API": {
      "command": "uv",
      "args": [
        "run",
        "--with",
        "mcp[cli]",
        "mcp",
        "run",
        "{:path_to_cloned}/3xpl_mcp/main.py"
      ],
      "env": {
        "THREEXPL_API_KEY": ""
      }
    }
  }
}

*Note: Set your API key from 3xpl to use the main API. If the THREEXPL_API_KEY field in the config file is left blank, the MCP server will use the sandbox API, which has rate limits.

*Note 2: if MCP server doesn't start you might need to provide full path to uv in the command field.

Contribution

Feel free to open issues for bugs or suggestions.
Pull requests are also welcome – just make sure to provide description of your changes.