Payfetch

io.github.forum-labs/payfetch · v1.0.0

x402 paying-fetch client for AI agents. Spending caps, approval, receipts. Non-custodial.

Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add payfetch -e PAYFETCH_PRIVATE_KEY=<PAYFETCH_PRIVATE_KEY> -e PAYFETCH_KEY_FILE=<PAYFETCH_KEY_FILE> -e PAYFETCH_CDP_API_KEY_ID=<PAYFETCH_CDP_API_KEY_ID> -e PAYFETCH_CDP_API_KEY_SECRET=<PAYFETCH_CDP_API_KEY_SECRET> -e PAYFETCH_CDP_WALLET_SECRET=<PAYFETCH_CDP_WALLET_SECRET> -e PAYFETCH_CDP_ACCOUNT_NAME=<PAYFETCH_CDP_ACCOUNT_NAME> -e PAYFETCH_DATA_DIR=<PAYFETCH_DATA_DIR> -e PAYFETCH_TEST_MODE=<PAYFETCH_TEST_MODE> -e PAYFETCH_APPROVER=<PAYFETCH_APPROVER> -e PAYFETCH_VIA=<PAYFETCH_VIA> -- npx -y @forum-labs/[email protected]

claude_desktop_config.json

{
  "mcpServers": {
    "payfetch": {
      "command": "npx",
      "args": [
        "-y",
        "@forum-labs/[email protected]"
      ],
      "env": {
        "PAYFETCH_PRIVATE_KEY": "<PAYFETCH_PRIVATE_KEY>",
        "PAYFETCH_KEY_FILE": "<PAYFETCH_KEY_FILE>",
        "PAYFETCH_CDP_API_KEY_ID": "<PAYFETCH_CDP_API_KEY_ID>",
        "PAYFETCH_CDP_API_KEY_SECRET": "<PAYFETCH_CDP_API_KEY_SECRET>",
        "PAYFETCH_CDP_WALLET_SECRET": "<PAYFETCH_CDP_WALLET_SECRET>",
        "PAYFETCH_CDP_ACCOUNT_NAME": "<PAYFETCH_CDP_ACCOUNT_NAME>",
        "PAYFETCH_DATA_DIR": "<PAYFETCH_DATA_DIR>",
        "PAYFETCH_TEST_MODE": "<PAYFETCH_TEST_MODE>",
        "PAYFETCH_APPROVER": "<PAYFETCH_APPROVER>",
        "PAYFETCH_VIA": "<PAYFETCH_VIA>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "payfetch": {
      "command": "npx",
      "args": [
        "-y",
        "@forum-labs/[email protected]"
      ],
      "env": {
        "PAYFETCH_PRIVATE_KEY": "<PAYFETCH_PRIVATE_KEY>",
        "PAYFETCH_KEY_FILE": "<PAYFETCH_KEY_FILE>",
        "PAYFETCH_CDP_API_KEY_ID": "<PAYFETCH_CDP_API_KEY_ID>",
        "PAYFETCH_CDP_API_KEY_SECRET": "<PAYFETCH_CDP_API_KEY_SECRET>",
        "PAYFETCH_CDP_WALLET_SECRET": "<PAYFETCH_CDP_WALLET_SECRET>",
        "PAYFETCH_CDP_ACCOUNT_NAME": "<PAYFETCH_CDP_ACCOUNT_NAME>",
        "PAYFETCH_DATA_DIR": "<PAYFETCH_DATA_DIR>",
        "PAYFETCH_TEST_MODE": "<PAYFETCH_TEST_MODE>",
        "PAYFETCH_APPROVER": "<PAYFETCH_APPROVER>",
        "PAYFETCH_VIA": "<PAYFETCH_VIA>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "payfetch": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@forum-labs/[email protected]"
      ],
      "env": {
        "PAYFETCH_PRIVATE_KEY": "<PAYFETCH_PRIVATE_KEY>",
        "PAYFETCH_KEY_FILE": "<PAYFETCH_KEY_FILE>",
        "PAYFETCH_CDP_API_KEY_ID": "<PAYFETCH_CDP_API_KEY_ID>",
        "PAYFETCH_CDP_API_KEY_SECRET": "<PAYFETCH_CDP_API_KEY_SECRET>",
        "PAYFETCH_CDP_WALLET_SECRET": "<PAYFETCH_CDP_WALLET_SECRET>",
        "PAYFETCH_CDP_ACCOUNT_NAME": "<PAYFETCH_CDP_ACCOUNT_NAME>",
        "PAYFETCH_DATA_DIR": "<PAYFETCH_DATA_DIR>",
        "PAYFETCH_TEST_MODE": "<PAYFETCH_TEST_MODE>",
        "PAYFETCH_APPROVER": "<PAYFETCH_APPROVER>",
        "PAYFETCH_VIA": "<PAYFETCH_VIA>"
      }
    }
  }
}

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
`PAYFETCH_PRIVATE_KEY` Optional, secret	0x-hex EVM private key for a DEDICATED low-balance wallet. Set exactly ONE signer source.
`PAYFETCH_KEY_FILE` Optional	Path to a chmod-600 file holding a 0x-hex key (signer alt).
`PAYFETCH_CDP_API_KEY_ID` Optional, secret	Coinbase CDP server-wallet key id (YOUR account).
`PAYFETCH_CDP_API_KEY_SECRET` Optional, secret	Coinbase CDP API key secret.
`PAYFETCH_CDP_WALLET_SECRET` Optional, secret	Coinbase CDP wallet secret.
`PAYFETCH_CDP_ACCOUNT_NAME` Optional	Optional named CDP EVM account.
`PAYFETCH_DATA_DIR` Optional	Ledger/state/config root. Default ~/.payfetch.
`PAYFETCH_TEST_MODE` Optional	Any value -> receipts test:true, Base mainnet refused (Sepolia only).
`PAYFETCH_APPROVER` Optional	Set to 1 to grant approval authority (never with a queue-capable mode).
`PAYFETCH_VIA` Optional	Optional via= attribution slug sent on guard calls only.

Details

Package	`@forum-labs/[email protected]` (NPM, stdio)
First published	6 Jul 2026
Last updated	6 Jul 2026
Registry name	`io.github.forum-labs/payfetch`

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Live status

Local install

Installed and run on your own machine, so there is no public endpoint to check.

Pair it with live search

Agents that use Payfetch often also need current facts. NestDaddy MCP gives your AI today's internet: web search, real-time breaking news and full page reading in one connector.

See NestDaddy MCP

For maintainers

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