Koskamo

crosscheck MCP

An independent review service for AI agents that checks drafts for factual errors, arithmetic mistakes, and tone; validates agent deliverables against requirements; and scans skills or MCP server files for security risks before installation. It provides JSON verdicts and Ed25519-signed receipts for verification.

Visit crosscheckapi.com

Package and access

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

crosscheck MCP logo, by crosscheckapi.comVendor evidenceLocal stdioSource reviewed; not executedOperated by crosscheckapi.com
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Official MCP Registry namespace is tied to crosscheckapi.com ·
  • Popularity 1 GitHub star

What you can do with it

  • Review AI-generated drafts for factual and arithmetic accuracy
  • Validate agent deliverables against specific task requirements
  • Scan skill files for security risks before installation

Source and maintenance

Vendor evidenceRegistry 0.6.0MIT
mcp-registry: com.crosscheckapi/crosscheck@0.6.0Source repositoryProject website
Last repository push
Maintenance checked

Packages and installation

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

crosscheckapi 0.6.0

npm
crosscheckapi package definition
{
  "version": "0.6.0",
  "transport": "stdio",
  "identifier": "crosscheckapi",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "CROSSCHECK_WALLET_KEY",
      "format": "string",
      "description": "Private key of a dedicated EVM wallet with a few dollars of USDC on Base (or test USDC on Base Sepolia). Pays for checks."
    },
    {
      "name": "CROSSCHECK_MAX_USD",
      "format": "string",
      "description": "Refuse to pay more than this per check. Default 0.10."
    },
    {
      "name": "CROSSCHECK_NETWORKS",
      "format": "string",
      "description": "Networks to pay on, in order of preference. Default eip155:8453,eip155:84532. Set eip155:84532 for test USDC only."
    }
  ]
}

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": {
    "crosscheck-mcp-crosscheckapi": {
      "command": "npx",
      "args": [
        "-y",
        "crosscheckapi@0.6.0"
      ],
      "env": {
        "CROSSCHECK_WALLET_KEY": "<YOUR_CROSSCHECK_WALLET_KEY>",
        "CROSSCHECK_MAX_USD": "<YOUR_CROSSCHECK_MAX_USD>",
        "CROSSCHECK_NETWORKS": "<YOUR_CROSSCHECK_NETWORKS>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "crosscheck-mcp-crosscheckapi": {
      "command": "npx",
      "args": [
        "-y",
        "crosscheckapi@0.6.0"
      ],
      "env": {
        "CROSSCHECK_WALLET_KEY": "<YOUR_CROSSCHECK_WALLET_KEY>",
        "CROSSCHECK_MAX_USD": "<YOUR_CROSSCHECK_MAX_USD>",
        "CROSSCHECK_NETWORKS": "<YOUR_CROSSCHECK_NETWORKS>"
      }
    }
  }
}

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": {
    "crosscheck-mcp-crosscheckapi": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "crosscheckapi@0.6.0"
      ],
      "env": {
        "CROSSCHECK_WALLET_KEY": "<YOUR_CROSSCHECK_WALLET_KEY>",
        "CROSSCHECK_MAX_USD": "<YOUR_CROSSCHECK_MAX_USD>",
        "CROSSCHECK_NETWORKS": "<YOUR_CROSSCHECK_NETWORKS>"
      }
    }
  }
}

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": {
    "crosscheck-mcp-crosscheckapi": {
      "command": "npx",
      "args": [
        "-y",
        "crosscheckapi@0.6.0"
      ],
      "env": {
        "CROSSCHECK_WALLET_KEY": "<YOUR_CROSSCHECK_WALLET_KEY>",
        "CROSSCHECK_MAX_USD": "<YOUR_CROSSCHECK_MAX_USD>",
        "CROSSCHECK_NETWORKS": "<YOUR_CROSSCHECK_NETWORKS>"
      }
    }
  }
}

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