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304NotModified

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Sourced answers on FR/EU rules + French company search (SIREN, NAF) for agents, quoted and budgeted

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 304notmodified 'https://304notfound.com/mcp' --header 'X-API-Key: <Optional. Free key: POST https://304notfound.com/v1/keys. Without a key: a few questions per day.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "304notmodified": {
            "type": "http",
            "url": "https://304notfound.com/mcp",
            "headers": {
                "X-API-Key": "<Optional. Free key: POST https://304notfound.com/v1/keys. Without a key: a few questions per day.>"
            }
        }
    }
}

Frequently asked questions

What is 304NotModified?

Sourced answers on FR/EU rules + French company search (SIREN, NAF) for agents, quoted and budgeted

How do I install 304NotModified?

It runs as a remote server. In Claude Code: claude mcp add --transport http 304notmodified 'https://304notfound.com/mcp' --header 'X-API-Key: <Optional. Free key: POST https://304notfound.com/v1/keys. Without a key: a few questions per day.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does 304NotModified need an API key?

Yes. It expects X-API-Key, which you set in its configuration.

Who maintains 304NotModified?

It is published by com.304notfound. 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.