Is fastify.dev agent ready?
fastify.dev is partly agent ready: it scores 56/100 (grade C) on the w2agent rubric. Weakest areas: Agent Auth (25), Agent Discovery (35).
Changed since last check
+8 points since the previous check (2026-09-16)
Fixed: Response time, Content negotiation (Markdown), llms.txt links resolve
Category scores
Technical
89
Agent Auth
25
Agent Discovery
35
Agent Protocols
50
Content Quality
68
Structured Data
86
Bot Accessibility
53
Agent protocol panel
- A2A agent cardNot found
- OAuth discoveryNot measured
- MCP discoveryNot found
- llms.txt validityPresent
Check results
Bot Accessibility
- ✓No error status codespass
- ✓Response timepass
- ✗XML sitemap existsfail
- ✓AI agent accesspass
- ✓Edge treatment of agent user-agentstracked, not scoredpass
- ✗robots.txt existsfail
- ✓Content negotiation (Markdown)pass
- —Declared AI usage preferencestracked, not scoredskip
Structured Data
- ✓OpenGraph meta tagspass
- ✓Semantic HTML elementspass
- ✓Appropriate Schema.org typepass
- ✓JSON-LD validpass
- ~Heading hierarchypartial
- ✓Schema.org JSON-LD presentpass
- ~Schema.org completenesspartial
Content Quality
- ✓FAQ contentpass
- ✓Answer-first contentpass
- ✓Content lengthpass
- ~Token efficiency (HTML-to-text ratio)partial
- ✗Freshness signalsfail
- ✗Author attributionfail
- ✓Citation readinesspass
- ✓Lists and tables for structured infopass
Agent Discovery
- ✓llms.txt follows specpass
- ✓llms.txt existspass
- —MCP server cardtracked, not scoredskip
- ✗Markdown alternate linksfail
- ✗/.well-known/agent-card.jsonfail
- ✓llms.txt links resolvepass
Agent Protocols
- ✓Discoverable API endpointspass
- ✗MCP endpointfail
- ✗Action schemasfail
- —/.well-known/ucpskip
- —Structured formsskip
- —WebMCP imperative APItracked, not scoredskip
- —WebMCP declarative APItracked, not scoredskip
- ✓Reachable as Google-Agentpass
- ✓Reachable as ChatGPT-Userpass
- ✓Reachable as Perplexity-Userpass
Agent Auth
- —MCP authorization (401 challenge → protected resource metadata)skip
- —PKCE S256 supportskip
- ✗Public API surfacefail
- —Client ID Metadata Documents (bonus)skip
- —OpenAPI specificationskip
- ~Agent/bot auth documentationpartial
- —OAuth discovery chain (RFC 9728 → RFC 8414)skip
- —Developer portalskip
- —Scoped API permissionsskip
- —API catalog (RFC 9727)skip
- —Agent operator signing directorytracked, not scoredskip
Technical
- ✓HTTPSpass
- ✓UTF-8 charsetpass
- ✓Canonical URLspass
- ✓Mobile viewportpass
- ✓Content accessible without JSpass
- ~Security headerspartial
Other
- ✓astro-ssr-modepass
- ✗astro-robots-txtfail
- ✗astro-sitemap-integrationfail
Score history
- 56/100 · rubric v3.0
- 48/100 · rubric v3.0
- 50/100 · rubric v3.0
- 43/100 · rubric v2.0
- 43/100 · rubric v2.0
- 41/100 · rubric v2.0
- 44/100 · rubric v2.0
- 43/100 · rubric v2.0
- 42/100 · rubric v2.0
- 62/100 · rubric v2.0
- 63/100 · rubric v2.0