Preflight Checks MCP

Deterministic pre-execution verification tools for AI agents that query public registries and legal texts to validate dependencies, transactions, and legal citations before irreversible steps, utilizing x402 USDC pay-per-call on Base.

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Package and access

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

Community listingLocal stdioSource reviewed; not executedPublished by Jose Robles

You need:Paid x402 checks are only for business or professional use

Vendor documentation

What you can do with it

Check dependency names suggested by a model to catch invented packages
Inspect Bitcoin transaction inputs for chain context before signing
Verify EU law citations when publishing claims
Validate CVE identifiers produced by an AI model

Source and maintenance

Community listingRegistry 0.4.1

mcp-registry: io.github.josediegorobles/preflight-checks@0.4.1 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

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

@joserobles/preflight-mcp 0.4.0

npm

@joserobles/preflight-mcp package definition

{
  "version": "0.4.0",
  "transport": "stdio",
  "identifier": "@joserobles/preflight-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "PREFLIGHT_BUYER_PRIVATE_KEY",
      "isRequired": true,
      "description": "Private key of a Base wallet holding USDC, used to pay each call via x402 (0.05 USDC per check)."
    },
    {
      "name": "PREFLIGHT_BASE_URL",
      "description": "API base URL. Defaults to https://preflight402.com."
    }
  ]
}

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": {
    "preflight-checks-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@joserobles/preflight-mcp@0.4.0"
      ],
      "env": {
        "PREFLIGHT_BUYER_PRIVATE_KEY": "<YOUR_PREFLIGHT_BUYER_PRIVATE_KEY>",
        "PREFLIGHT_BASE_URL": "<YOUR_PREFLIGHT_BASE_URL>"
      }
    }
  }
}

Cline

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

Cline configuration

{
  "mcpServers": {
    "preflight-checks-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@joserobles/preflight-mcp@0.4.0"
      ],
      "env": {
        "PREFLIGHT_BUYER_PRIVATE_KEY": "<YOUR_PREFLIGHT_BUYER_PRIVATE_KEY>",
        "PREFLIGHT_BASE_URL": "<YOUR_PREFLIGHT_BASE_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": {
    "preflight-checks-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@joserobles/preflight-mcp@0.4.0"
      ],
      "env": {
        "PREFLIGHT_BUYER_PRIVATE_KEY": "<YOUR_PREFLIGHT_BUYER_PRIVATE_KEY>",
        "PREFLIGHT_BASE_URL": "<YOUR_PREFLIGHT_BASE_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": {
    "preflight-checks-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@joserobles/preflight-mcp@0.4.0"
      ],
      "env": {
        "PREFLIGHT_BUYER_PRIVATE_KEY": "<YOUR_PREFLIGHT_BUYER_PRIVATE_KEY>",
        "PREFLIGHT_BASE_URL": "<YOUR_PREFLIGHT_BASE_URL>"
      }
    }
  }
}

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