Cross-DEX price & spread for PancakeSwap v2+v3 on BSC via x402. Tool get_dex_spread(pair, fee?).
Connect Runs on your machine
claude mcp add bsc-dex-spread -e EVM_PRIVATE_KEY=<EVM_PRIVATE_KEY> -e GATEWAY_URL=<GATEWAY_URL> -- npx -y [email protected]{
"mcpServers": {
"bsc-dex-spread": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"GATEWAY_URL": "<GATEWAY_URL>"
}
}
}
}{
"mcpServers": {
"bsc-dex-spread": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"GATEWAY_URL": "<GATEWAY_URL>"
}
}
}
}{
"servers": {
"bsc-dex-spread": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"GATEWAY_URL": "<GATEWAY_URL>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
EVM_PRIVATE_KEYRequired, secret | Your Base-mainnet buyer wallet private key (0x-prefixed). Funded with a few dollars of USDC on Base; needs zero ETH. Pays $0.01 USDC per call. |
GATEWAY_URLOptional | Optional override of the gateway base URL. Defaults to https://x402.donnyautomation.com |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 3 Jul 2026 |
| Last updated | 3 Jul 2026 |
| Registry name | io.github.donnywin85/bsc-dex-spread |
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