Deep First Search Agent Pay MCP

An MCP server that enables AI agents to make secure, on-chain x402 payments in USDC on Base. It enforces owner-signed budgets, prevents prompt injection attacks from altering payees or prices, and provides tools like paid_fetch and budget_status to manage agent spending safely.

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Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Vendor evidenceLocal stdioSource reviewed; not executedOperated by Deep First Search

Vendor documentation

What you can do with it

Execute secure x402 payments for AI agents
Enforce per-merchant spending budgets on-chain
Prevent prompt injection from altering payment details
Monitor agent payment status and budgets

Source and maintenance

Vendor evidenceRegistry 0.2.1

mcp-registry: com.deepfirstsearch/agent-pay-mcp@0.2.1 Source repository

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@deepfirstsearch/agent-pay-mcp 0.2.1

npm

@deepfirstsearch/agent-pay-mcp package definition

{
  "version": "0.2.1",
  "transport": "stdio",
  "identifier": "@deepfirstsearch/agent-pay-mcp",
  "registryType": "npm",
  "packageArguments": [
    {
      "type": "positional",
      "format": "filepath",
      "valueHint": "config.json",
      "isRequired": true,
      "description": "Path to the config file (merchants, caps, vault). See config.example.json."
    }
  ],
  "environmentVariables": [
    {
      "name": "AGENT_PAY_BURNER_SEED",
      "format": "string",
      "isRequired": true,
      "description": "32-byte hex secret the per-merchant payer addresses are derived from. Never your owner key."
    },
    {
      "name": "AGENT_PAY_AGENT_KEY",
      "format": "string",
      "description": "The budget's agent key (needed when a vault is configured)."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "deep-first-search-agent-pay-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@deepfirstsearch/agent-pay-mcp@0.2.1"
      ],
      "env": {
        "AGENT_PAY_BURNER_SEED": "<YOUR_AGENT_PAY_BURNER_SEED>",
        "AGENT_PAY_AGENT_KEY": "<YOUR_AGENT_PAY_AGENT_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "deep-first-search-agent-pay-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@deepfirstsearch/agent-pay-mcp@0.2.1"
      ],
      "env": {
        "AGENT_PAY_BURNER_SEED": "<YOUR_AGENT_PAY_BURNER_SEED>",
        "AGENT_PAY_AGENT_KEY": "<YOUR_AGENT_PAY_AGENT_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "deep-first-search-agent-pay-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@deepfirstsearch/agent-pay-mcp@0.2.1"
      ],
      "env": {
        "AGENT_PAY_BURNER_SEED": "<YOUR_AGENT_PAY_BURNER_SEED>",
        "AGENT_PAY_AGENT_KEY": "<YOUR_AGENT_PAY_AGENT_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "deep-first-search-agent-pay-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@deepfirstsearch/agent-pay-mcp@0.2.1"
      ],
      "env": {
        "AGENT_PAY_BURNER_SEED": "<YOUR_AGENT_PAY_BURNER_SEED>",
        "AGENT_PAY_AGENT_KEY": "<YOUR_AGENT_PAY_AGENT_KEY>"
      }
    }
  }
}

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