304NotModified is answering right now. Last checked 2 min ago. It exposes 8 tools.
Sourced answers on FR/EU rules + French company search (SIREN, NAF) for agents, quoted and budgeted
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 10 October 2026. No other catalogue keeps this.
Today is the operative word: we check 304NotModified every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.
claude mcp add 304notmodified --transport http https://304notfound.com/mcp
https://304notfound.com/mcp
[mcp_servers.304notmodified]
url = "https://304notfound.com/mcp"
{
"mcpServers": {
"304notmodified": {
"url": "https://304notfound.com/mcp"
}
}
}
{
"servers": {
"304notmodified": {
"type": "http",
"url": "https://304notfound.com/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
ask
calculate
comment
feedback
get_run
quote_service
run_service
list_services
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://304notfound.com/mcp | streamable-http | answering | 237 ms | 2 min ago |
French company data by SIREN or search: address, NAF code, directors, VAT and financials
Researched knowledge for AI agents. Canonical answers from official sources.
A legal body for AI agents: a real company, a verified human and spending rules on Arc (testnet).
Every active French company by SIREN: search, full fiche, and filed PDFs paid per fetch by agents.
Check any page or site for search engines, AI answers (GEO) and AI agents (AXO).
B2B lead and company data for AI agents: free search, pay only for emails, phones, profiles.
Check one French company by name or SIREN and get its Nogogo A-E reliability grade for free.
Fresh, source-verified docs for building MCP servers and Claude agents, for AI coding agents.
Answers built from our own checks of this server.