finance MCP Server
MCP server with 29 tools for block chain data — token lookups, wallet balances,live chain queries across 10+ networks using micro payment on x402, and full API documentation search.
Discovered via github-topic:mcp and last synced 3mo ago.
1. Install the package
npx @one-source/mcp
2. Add to claude_desktop_config.json
{
"mcpServers": {
"-one-source-mcp": {
"command": "npx",
"args": [
"@one-source/mcp"
]
}
}
}Config file location: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) / %APPDATA%\Claude\claude_desktop_config.json (Windows)
Contract type detection via ERC165
Token total supply
Chain ID, block number, gas price
Refund unused `batch` channel balance back to your wallet on demand
—
`https://skills.onesource.io`
ETH + multiple ERC20 balances
Contract bytecode
ERC20 allowance check
NFT owner via ownerOf
Gas estimation
View or switch the x402 payment scheme — `exact` (per-call) vs `batch` (payment channel: one deposit funds many off-chain calls, settled with a single claim)
Variable
—
ERC1155 balance via RPC
Transaction + receipt via RPC
Transaction count
—
—
Purpose
NFT metadata via tokenURI
ENS name/address resolution
Avalanche C-Chain
`10`
ERC20 balance via balanceOf
ERC20 Transfer logs via eth_getLogs
Block details by number via RPC
Proxy contract detection
Report bugs to Slack (or GitHub Issues fallback)
Default
—
ERC721 token enumeration
Latest block number
Simulate eth_call
Description
Event logs via eth_getLogs
EIP-155 chain ID
Read storage slot
Ethereum mainnet (default)
Pending block from mempool
Server health, version, auth status, setup instructions
Config file path
—
Transaction receipt
Ethereum Sepolia testnet
`exact`
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