Koskamo

@powforge/captcha-mcp

An MCP server that wraps the PowForge CAPTCHA service to provide proof-of-work and Lightning payment-based authentication for AI agents. It replaces standard rate-limiting with machine-readable challenges, allowing agents to earn access via CPU computation or micro-payments without requiring accounts, emails, or API keys.

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Package and access

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

@powforge/captcha-mcp logo, by zekebuilds-labCommunity listingLocal stdioSource reviewed; not executedPublished by zekebuilds-lab
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Popularity 1 GitHub star

What you can do with it

  • Request a fresh proof-of-work puzzle for agent authentication
  • Submit a solved nonce to receive a short-lived access token
  • Check server health and L402 endpoint metadata

Source and maintenance

Community listingRegistry 0.1.1MIT
mcp-registry: io.github.zekebuilds-lab/captcha-mcp@0.1.1Source repositoryProject website
Last repository push
Maintenance checked

Packages and installation

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

@powforge/captcha-mcp 0.1.1

npm
@powforge/captcha-mcp package definition
{
  "version": "0.1.1",
  "transport": "stdio",
  "identifier": "@powforge/captcha-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "CAPTCHA_URL",
      "format": "string",
      "default": "https://captcha.powforge.dev",
      "description": "PowForge captcha backend URL. Defaults to public production endpoint when running via npx; override for self-hosted or local dev."
    }
  ]
}

Tools

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

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

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": {
    "powforge-captcha-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@powforge/captcha-mcp@0.1.1"
      ],
      "env": {
        "CAPTCHA_URL": "<YOUR_CAPTCHA_URL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "powforge-captcha-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@powforge/captcha-mcp@0.1.1"
      ],
      "env": {
        "CAPTCHA_URL": "<YOUR_CAPTCHA_URL>"
      }
    }
  }
}

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": {
    "powforge-captcha-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@powforge/captcha-mcp@0.1.1"
      ],
      "env": {
        "CAPTCHA_URL": "<YOUR_CAPTCHA_URL>"
      }
    }
  }
}

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": {
    "powforge-captcha-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@powforge/captcha-mcp@0.1.1"
      ],
      "env": {
        "CAPTCHA_URL": "<YOUR_CAPTCHA_URL>"
      }
    }
  }
}

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