docs.vapi.ai agentic web readiness
A Manifest validity: 60% (3/5 valid, 3 errors, 6 warnings) · Surface score 47 (coverage 30 + breadth 12 + conformance 5). 6 standards observed across 3 of 9 steps; 5 manifests present (+ robots.txt, security.txt), 3 errors, 6 warnings. Checked 2026-10-25 09:47:43 UTC. This grades the agent-facing files published at docs.vapi.ai, not the organisation's products.
Coverage by step
Manifests
| Manifest | Result | Findings |
|---|---|---|
Agentic Resource Discovery/.well-known/ard.json | absent HTTP 404 | |
AI Catalog well-known file/.well-known/ai-catalog.json | absent HTTP 404 | |
MCP Server Cards (SEP-2127)/mcp/server-card | absent HTTP 404 | |
Agent2Agent Protocol/.well-known/agent-card.json | absent HTTP 404 | |
llms.txt/llms.txt | valid |
|
AGENTS.md/AGENTS.md | valid | |
Agent Skills/.well-known/agent-skills/index.json | absent HTTP 404 | |
api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs/.well-known/api-catalog | valid | |
AI Crawler User-Agent Tokens in robots.txt/robots.txt | no AI tokens |
|
security.txt (RFC 9116)/.well-known/security.txt | valid |
|
auth.md/auth.md | errors |
View valid |
Open Knowledge Format/okf/index.md | errors |
View valid |
What an agent can call
- API description
https://docs.vapi.ai/openapi/api-reference.yaml(application/yaml) - API description
https://docs.vapi.ai/api-reference(text/html) - API description
https://docs.vapi.ai/openapi/webhooks.yaml(application/yaml) - API description
https://docs.vapi.ai/api-reference/webhooks(text/html) - llms.txt: Vapi, 291 links, llms-full.txt present
- OKF bundle (
/okf/index.md): Page Not Found, 3 concept links - robots.txt AI policy: no AI crawler tokens named; unlisted crawlers allowed on public paths (subpaths disallowed under User-agent: *)
- OAuth protected resource
https://docs.vapi.ai, authorization servers: https://docs.vapi.ai/_mcp/oauth
Standards observed
- llms.txt https://docs.vapi.ai/llms.txt
- AGENTS.md https://docs.vapi.ai/AGENTS.md
- api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs https://docs.vapi.ai/.well-known/api-catalog
- OAuth Protected Resource and Authorization Server Metadata (as used for agent authorization) https://docs.vapi.ai/.well-known/oauth-protected-resource
- OAuth Client ID Metadata Document https://docs.vapi.ai/.well-known/oauth-authorization-server
- Markdown for Agents https://docs.vapi.ai/
Cheapest next steps
- Agentic Resource Discovery: a catalog at /.well-known/ard.json lets agents discover your APIs, MCP servers and data in one fetch
- MCP Server Cards (SEP-2127): if you run an MCP server, a SEP-2127 card at <mcp-url>/server-card lets clients configure themselves
Agent pre-flight & practical readiness
Preferred mode: openapi (fallback llms_txt). Read the published API description and call those operations. Scraping HTML skips the interface the site already gave you.
Fetch: GET https://docs.vapi.ai/openapi/api-reference.yaml GET the API description and call the documented operations.
Practical readability: exa_parsable yes, markdown negotiation yes, render markdown_native, HTML quality high, first content at byte 0.
AI crawler posture: open_to_all · Assistant access: OpenAI allowed, Anthropic allowed, Google allowed, Perplexity allowed, Exa allowed.
Readiness subscores: reach 19/20, readability 28/30, capabilities 16/35, conformance 5/15, total 68/100, grade A.
How the grade is made
+10 per lifecycle step with a standard observed, counting manifests that validate or that the probe rule for the standard recognises (a valid MCP server card counts for MCP; max 90); +3 per observed standard beyond the first two (max 15); conformance +15 (+10 with one manifest) minus 5 per agent-facing manifest with errors, never below 0 (security.txt is reported, not scored). Lifecycle grade: A+ >= 60, A >= 45, B >= 30, C >= 20, D >= 10. Strict 100-point composite (subscores.total_100 / subscores.grade_100): reach_and_policy (20) + readability (30) + capabilities (35) + conformance (15), where A+ >= 80, A >= 65, B >= 45, C >= 28, D >= 15. Errors are specification violations; warnings are best-practice gaps. Only public paths are fetched, without credentials, so standards that need a login (skipped in the probe) are not counted either way. The same report is the validate_manifest tool on the MCP server.
JSON · Markdown · probe rules