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Bot403

Official registry Search and web

Invisible bot shield for HTML forms: the browser solves a proof of work and your server checks it.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http bot403 'https://bot403.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "bot403": {
            "type": "http",
            "url": "https://bot403.com/mcp"
        }
    }
}

Frequently asked questions

What is Bot403?

Invisible bot shield for HTML forms: the browser solves a proof of work and your server checks it.

How do I install Bot403?

It runs as a remote server. In Claude Code: claude mcp add --transport http bot403 'https://bot403.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Bot403 need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Who maintains Bot403?

It is published by com.bot403. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.