ChatGPT MCP

Add paid MCP tools to ChatGPT

ChatGPT MCP access is gated and changes by plan and developer mode availability. When your ChatGPT environment can connect to MCP tools, Munition is a practical paid action: upload a local artifact and return a URL.

Keywords: chatgpt mcp, ChatGPT Developer Mode MCP, paid MCP tools

Use the Munition MCP setup pattern

For local Developer Mode or compatible MCP hosts, use the Munition stdio server. For ChatGPT surfaces that require remote MCP, use Codex or Claude Code until a documented remote connector is available.

{
  "mcpServers": {
    "munition": {
      "command": "npx",
      "args": ["-y", "@munition/mcp"],
      "env": {
        "MUNITION_API_URL": "https://api.munition.io"
      }
    }
  }
}

Prompt example

Copy this shape into the agent once Munition is installed.

Upload the generated CSV with Munition, then return the public URL and explain that it expires in 7 days.

Expected result

A successful run should be explicit about the action, output, and paid call.

  • 01

    If the ChatGPT environment supports the configured MCP server, it calls Munition upload after producing the file.

  • 02

    The response includes a public URL, file metadata, expiry, and paid-call receipt information.

  • 03

    If MCP is not available in your ChatGPT surface, run the same workflow in Codex, Claude Code, Cursor, or Claude Desktop.

Limits and privacy

Use Munition for short-lived shareable agent artifacts, not for access-controlled storage.

  • 01

    ChatGPT MCP availability is gated; some ChatGPT Web experiences cannot run a local stdio MCP server.

  • 02

    Uploaded files are public to anyone with the URL, limited to 10 MB, and retained for 7 days by default.

  • 03

    Do not paste wallet secrets or API keys into ChatGPT. Munition payment state should stay in the MCP server/account layer.

Follow the setup path for your client or read the paid upload and x402 model.

FAQ

Short answers for agents and humans configuring Munition.

Does ChatGPT always support MCP?

No. MCP availability depends on the ChatGPT product surface, plan, and developer mode access.

When should I use Codex or Claude Code instead?

Use Codex or Claude Code when you need a reliable local stdio MCP setup today.

What paid action does Munition provide?

The live action is file upload: a local artifact becomes a public URL for 0.005 USDC.

Next step

Use the client that can actually run MCP

If ChatGPT Developer Mode is gated for you, use the same Munition server from Codex or Claude Code.

See Codex setup