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.github/skills/agent-ready-cloudflare/dns-aid/SKILL.md

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+---
+name: agent-ready-dns-aid
+description: >
+  Sub-skill de agent-ready-cloudflare: Implement DNS for AI Discovery (DNS-AID)
+---
+# Implement DNS for AI Discovery (DNS-AID)
+
+Publish DNS for AI Discovery (DNS-AID) records so agents can discover your agent endpoints through DNS.
+
+## Requirements
+
+- Publish DNS for AI Discovery (DNS-AID) records under your domain's `_agents` namespace, such as `_index._agents.example.com` or `_a2a._agents.example.com`
+- Use ServiceMode `SVCB` records, or `HTTPS` records for HTTPS endpoints, with `alpn` and endpoint connection parameters
+- Use numeric `keyNNNNN` SvcParamKey names for experimental DNS for AI Discovery (DNS-AID) custom parameters until they are registered
+- Sign public DNS for AI Discovery (DNS-AID) discovery zones with DNSSEC so validating resolvers return authenticated data
+
+## Example
+
+```dns
+_a2a._agents.example.com. 3600 IN SVCB 1 agent.example.com. alpn="a2a" port=443 mandatory=alpn,port
+```
+
+## Validate
+
+The scanner validates DNS for AI Discovery (DNS-AID) via DNS-over-HTTPS. By default, the scanner uses Cloudflare's `https://cloudflare-dns.com/dns-query` with automatic fallback to `https://dns.google/resolve` on resolver-level failures. Library callers can override the resolver with `ScanOptions.dohResolverUrl` (disables fallback).
+
+```http
+POST https://isitagentready.com/api/scan
+Content-Type: application/json
+
+{"url": "https://YOUR-SITE.com"}
+```
+
+Check that `checks.discoverability.dnsAid.status` is `"pass"`.
+
+## References
+
+- [draft-mozleywilliams-dnsop-dnsaid](https://datatracker.ietf.org/doc/draft-mozleywilliams-dnsop-dnsaid/)
+- [RFC 9460 — SVCB and HTTPS Resource Records](https://www.rfc-editor.org/info/rfc9460)