Cryptographic receipts for AI outputs on Base or Solana via x402.
Connect Runs on your machine
claude mcp add x402-notary-mcp -e WALLET_PRIVATE_KEY=<WALLET_PRIVATE_KEY> -e NOTARY_RAIL=<NOTARY_RAIL> -- npx -y @forgemeshlabs/[email protected]{
"mcpServers": {
"x402-notary-mcp": {
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/[email protected]"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>",
"NOTARY_RAIL": "<NOTARY_RAIL>"
}
}
}
}{
"mcpServers": {
"x402-notary-mcp": {
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/[email protected]"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>",
"NOTARY_RAIL": "<NOTARY_RAIL>"
}
}
}
}{
"servers": {
"x402-notary-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/[email protected]"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>",
"NOTARY_RAIL": "<NOTARY_RAIL>"
}
}
}
}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 |
|---|---|
WALLET_PRIVATE_KEYOptional, secret | Dedicated low-balance Base wallet private key for x402 USDC micropayments. Optional — verification tools work without it. Never use your primary wallet. |
NOTARY_RAILOptional | Payment rail: base or solana. Defaults to base, or solana when NOTARY_BASE_URL contains notary-solana. |
Details
| Package | @forgemeshlabs/[email protected] (NPM, stdio) |
| First published | 2 Nov 2026 |
| Last updated | 2 Nov 2026 |
| Registry name | io.github.forgemeshlabs/x402-notary-mcp |
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