Webhook signature public keys
Return the Ed25519 public keys used to verify `v1a` entries in
`Webhook-Signature`. This endpoint does not require authentication because
it returns only public keys, integer key IDs (`akid`), and an algorithm name.
It does not return secrets or application data.
Every webhook delivery carries `Webhook-Id`, `Webhook-Timestamp`, and
`Webhook-Signature: v1a,<base64>`. Verify at least one signature against
the complete active key set over the exact signing input
`<webhook-id>.<webhook-timestamp>.<raw_body>`. During rotation, deliveries
carry a space-delimited signature for each active private key. See the
Webhook Signatures guide.
Response
Current set of webhook signature public keys.
keys
Complete active public-key set. Array order has no signing semantics.