Checkpoint402 MCP

An official MCP server by Checkpoint402 that exposes DeFi and blockchain data services as AI tools. It allows agents to explain transactions, find DeFi yields, screen for new token safety, retrieve SEC 8-K company events, and perform OFAC sanctions screening. The server integrates with the x402 payment standard, enabling automatic USDC payments on Base for successful tool calls.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-18Operated by Checkpoint402

MCP endpoint (Streamable HTTP)

https://api.checkpoint402.com/mcp

Vendor documentation

What you can do with it

Explain blockchain transactions
Find best DeFi yields
Screen addresses for OFAC sanctions
Retrieve SEC 8-K company events

Tools advertised by the last live check:

list_services
explain_transaction
find_defi_yields
new_token_safety_feed
sec_8k_company_events
ofac_sanctions_screen

Connect from your client

Each snippet registers the same endpoint; pick the client you 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.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http checkpoint402-mcp https://api.checkpoint402.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add checkpoint402-mcp --url https://api.checkpoint402.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable checkpoint402-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "checkpoint402-mcp": {
      "url": "https://api.checkpoint402.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "checkpoint402-mcp": {
      "type": "streamableHttp",
      "url": "https://api.checkpoint402.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start checkpoint402-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "checkpoint402-mcp": {
      "type": "http",
      "url": "https://api.checkpoint402.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http checkpoint402-mcp https://api.checkpoint402.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "checkpoint402-mcp": {
      "url": "https://api.checkpoint402.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "checkpoint402-mcp": {
      "serverUrl": "https://api.checkpoint402.com/mcp"
    }
  }
}

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