Cryptographic receipts for AI outputs — signed attestations, Merkle proofs, and Base chain-anchors via x402 USDC micropayments. By ForgeMesh Labs.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add x402-notary --env WALLET_PRIVATE_KEY='<WALLET_PRIVATE_KEY>' -- npx -y @forgemeshlabs/x402-notary-mcp~/.codex/config.toml
[mcp_servers.x402-notary]
command = "npx"
args = ["-y", "@forgemeshlabs/x402-notary-mcp"]
env = { WALLET_PRIVATE_KEY = "<WALLET_PRIVATE_KEY>" }
# codex mcp add x402-notary --env WALLET_PRIVATE_KEY='<WALLET_PRIVATE_KEY>' -- npx -y @forgemeshlabs/x402-notary-mcp~/.cursor/mcp.json
{
"mcpServers": {
"x402-notary": {
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/x402-notary-mcp"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"x402-notary": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/x402-notary-mcp"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"x402-notary": {
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/x402-notary-mcp"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"x402-notary": {
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/x402-notary-mcp"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"x402-notary": {
"command": "npx",
"args": [
"-y",
"@forgemeshlabs/x402-notary-mcp"
],
"env": {
"WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>"
}
}
}
}Remote
claude mcp add --transport http x402-notary https://x402--forgemeshlabs.run.tools~/.codex/config.toml
[mcp_servers.x402-notary]
url = "https://x402--forgemeshlabs.run.tools"
# codex mcp add x402-notary --url https://x402--forgemeshlabs.run.tools~/.cursor/mcp.json
{
"mcpServers": {
"x402-notary": {
"url": "https://x402--forgemeshlabs.run.tools"
}
}
}.vscode/mcp.json
{
"servers": {
"x402-notary": {
"type": "http",
"url": "https://x402--forgemeshlabs.run.tools"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"x402-notary": {
"httpUrl": "https://x402--forgemeshlabs.run.tools"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"x402-notary": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://x402--forgemeshlabs.run.tools"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"x402-notary": {
"url": "https://x402--forgemeshlabs.run.tools"
}
}
}Environment variables
WALLET_PRIVATE_KEY
Replace the placeholders with your own credentials and keep them out of version control.