MCP server

Tools

dev.workers.sebastiaan-ba3.x402lint/tools

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Lints whether a paid API's 402 response speaks the x402 protocol correctly.

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

1

Token cost

About 133 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http tools https://x402lint.sebastiaan-ba3.workers.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.tools]
url = "https://x402lint.sebastiaan-ba3.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"tools":{"httpUrl":"https://x402lint.sebastiaan-ba3.workers.dev/mcp"}}}

Cursor

{"mcpServers":{"tools":{"url":"https://x402lint.sebastiaan-ba3.workers.dev/mcp"}}}

VS Code

{"servers":{"tools":{"type":"http","url":"https://x402lint.sebastiaan-ba3.workers.dev/mcp"}}}

Antigravity

agy mcp add tools https://x402lint.sebastiaan-ba3.workers.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"tools","server_url":"https://x402lint.sebastiaan-ba3.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"tools","server_url":"https://x402lint.sebastiaan-ba3.workers.dev/mcp"}

Tools

• lint_x402_endpoint ~133 tokens
  Fetch a URL, expect an HTTP 402 response, and validate the JSON body against the x402 protocol shape (x402Version, accepts[] fields, resource/description). Free, no account. Returns a pass/fail report with concrete errors and warnings.

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