https://lexidex.bsky.dev/lexicon/com.atproto.server.reserveSigningKey

> Public and does not require auth.

へえ、どれどれ……

```console
$ curl --fail-with-body -H 'Content-Type: application/json' -d '{"did":"did:plc:t5w5s6u5imtoazc5z3fdznp5"}' https://bsky.social/xrpc/com.atproto.server.reserveSigningKey
curl: (22) The requested URL returned error: 401
{"error":"AuthMissing","message":"Authentication Required"}
```

どっちやねん