x402 USDC paywall bridge for MCP — pay per tool call on Solana.
Connect Runs on your machine
claude mcp add agenticpay -e AGENTICPAY_BRIDGE_KEYPAIR=<AGENTICPAY_BRIDGE_KEYPAIR> -e AGENTICPAY_BRIDGE_TOOLS=<AGENTICPAY_BRIDGE_TOOLS> -e AGENTICPAY_BRIDGE_NETWORK=<AGENTICPAY_BRIDGE_NETWORK> -e AGENTICPAY_BRIDGE_RPC=<AGENTICPAY_BRIDGE_RPC> -- npx -y @agenticpay/[email protected]{
"mcpServers": {
"agenticpay": {
"command": "npx",
"args": [
"-y",
"@agenticpay/[email protected]"
],
"env": {
"AGENTICPAY_BRIDGE_KEYPAIR": "<AGENTICPAY_BRIDGE_KEYPAIR>",
"AGENTICPAY_BRIDGE_TOOLS": "<AGENTICPAY_BRIDGE_TOOLS>",
"AGENTICPAY_BRIDGE_NETWORK": "<AGENTICPAY_BRIDGE_NETWORK>",
"AGENTICPAY_BRIDGE_RPC": "<AGENTICPAY_BRIDGE_RPC>"
}
}
}
}{
"mcpServers": {
"agenticpay": {
"command": "npx",
"args": [
"-y",
"@agenticpay/[email protected]"
],
"env": {
"AGENTICPAY_BRIDGE_KEYPAIR": "<AGENTICPAY_BRIDGE_KEYPAIR>",
"AGENTICPAY_BRIDGE_TOOLS": "<AGENTICPAY_BRIDGE_TOOLS>",
"AGENTICPAY_BRIDGE_NETWORK": "<AGENTICPAY_BRIDGE_NETWORK>",
"AGENTICPAY_BRIDGE_RPC": "<AGENTICPAY_BRIDGE_RPC>"
}
}
}
}{
"servers": {
"agenticpay": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@agenticpay/[email protected]"
],
"env": {
"AGENTICPAY_BRIDGE_KEYPAIR": "<AGENTICPAY_BRIDGE_KEYPAIR>",
"AGENTICPAY_BRIDGE_TOOLS": "<AGENTICPAY_BRIDGE_TOOLS>",
"AGENTICPAY_BRIDGE_NETWORK": "<AGENTICPAY_BRIDGE_NETWORK>",
"AGENTICPAY_BRIDGE_RPC": "<AGENTICPAY_BRIDGE_RPC>"
}
}
}
}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 |
|---|---|
AGENTICPAY_BRIDGE_KEYPAIRRequired, secret | Solana keypair as 64-byte JSON array (the format `solana-keygen new` writes). The bridge signs each x402 payment with this keypair. |
AGENTICPAY_BRIDGE_TOOLSRequired | JSON array of paid tool definitions. Each entry: { name, description, url, inputSchema, headers? } |
AGENTICPAY_BRIDGE_NETWORKOptional | CAIP-2 network identifier. Devnet: solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1 |
AGENTICPAY_BRIDGE_RPCOptional | Solana JSON-RPC URL |
Details
| Package | @agenticpay/[email protected] (NPM, stdio) |
| First published | 1 May 2026 |
| Last updated | 1 May 2026 |
| Registry name | io.github.krystiangw/agenticpay |
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