MCP server giving AI agents direct, on-chain access to DeFi data — Aave v3 positions, Chainlink prices, Uniswap v3 swap simulation. No centralized API.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add defi --env POLYGON_RPC_URL='<POLYGON_RPC_URL>' --env ARBITRUM_RPC_URL='<ARBITRUM_RPC_URL>' -- uvx defi-mcp~/.codex/config.toml
[mcp_servers.defi]
command = "uvx"
args = ["defi-mcp"]
env = { POLYGON_RPC_URL = "<POLYGON_RPC_URL>", ARBITRUM_RPC_URL = "<ARBITRUM_RPC_URL>" }
# codex mcp add defi --env POLYGON_RPC_URL='<POLYGON_RPC_URL>' --env ARBITRUM_RPC_URL='<ARBITRUM_RPC_URL>' -- uvx defi-mcp~/.cursor/mcp.json
{
"mcpServers": {
"defi": {
"command": "uvx",
"args": [
"defi-mcp"
],
"env": {
"POLYGON_RPC_URL": "<POLYGON_RPC_URL>",
"ARBITRUM_RPC_URL": "<ARBITRUM_RPC_URL>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"defi": {
"type": "stdio",
"command": "uvx",
"args": [
"defi-mcp"
],
"env": {
"POLYGON_RPC_URL": "<POLYGON_RPC_URL>",
"ARBITRUM_RPC_URL": "<ARBITRUM_RPC_URL>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"defi": {
"command": "uvx",
"args": [
"defi-mcp"
],
"env": {
"POLYGON_RPC_URL": "<POLYGON_RPC_URL>",
"ARBITRUM_RPC_URL": "<ARBITRUM_RPC_URL>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"defi": {
"command": "uvx",
"args": [
"defi-mcp"
],
"env": {
"POLYGON_RPC_URL": "<POLYGON_RPC_URL>",
"ARBITRUM_RPC_URL": "<ARBITRUM_RPC_URL>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"defi": {
"command": "uvx",
"args": [
"defi-mcp"
],
"env": {
"POLYGON_RPC_URL": "<POLYGON_RPC_URL>",
"ARBITRUM_RPC_URL": "<ARBITRUM_RPC_URL>"
}
}
}
}Environment variables
POLYGON_RPC_URLARBITRUM_RPC_URL
Replace the placeholders with your own credentials and keep them out of version control.