304NotModified
Sourced answers on FR/EU rules + French company search (SIREN, NAF) for agents, quoted and budgeted
likely compatible
Declares API key header (X-API-Key); use Copilot Studio 'API key' → Header.
Rule R2b · what this means · Not tested in Copilot Studio.
| Registry name | com.304notfound/304notmodified |
| Endpoint used for verdict | https://304notfound.com/mcp |
| Transports | streamable-http |
| Auth (Copilot Studio setting) | API key (header) |
| Last endpoint check | 2026-10-20T18:10:31Z · initialize OK |
| Website | https://304notfound.com |
| Version | 0.4.0 |
| Registry updated | 2026-10-01 |
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Is this wrong or out of date? Email us. Data built 2026-10-20.