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agentx.sale Site Agent-Readiness Verdict Card
x402
agentx.sale Site Agent-Readiness Verdict Card is a paid API for AI agents from agentx.sale, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Grades a domain's agent-facing infrastructure (llms.txt, A2A, MCP card, OpenAPI), TLS, security headers, and AI-crawler policy into a single readiness verdict card
Price / call$0.02
Success—
StatusUnknown
How this service works
Site Agent-Readiness Verdict Card: grade a domain's agent-facing files (llms.txt, A2A, MCP card, OpenAPI), TLS, headers and AI-crawler policy
Output
A structured verdict card containing grades and presence/absence flags for agent-facing files (llms.txt, A2A agent.json, MCP server card, OpenAPI spec), TLS certificate health, HTTP security headers, and AI-crawler policy (e.g. whether GPTBot or ClaudeBot are allowed or blocked), aggregated into an overall agent-readiness score or verdict.
Example use cases
Pre-integration agent compatibility check
“Before we integrate with stripe.com, can you run a full agent-readiness check on it — I need to know if they have llms.txt, an MCP or A2A card, valid TLS, and whether they allow AI crawlers through?”
Portfolio site agent-readiness audit
“I just launched mysite.io — can you give me a verdict card on how agent-ready it is, checking for OpenAPI exposure, MCP card, llms.txt, TLS health, and any AI-crawler blocking?”
Competitor agent-infrastructure benchmarking
“Can you pull the agent-readiness grade for openai.com and tell me which of their agent-facing files are present — llms.txt, A2A, MCP card, OpenAPI — and how their TLS and crawler policy look?”
Technical details
Endpoint
GEThttps://agentx.sale/x402/agent-card?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single comprehensive verdict on whether a domain is ready to be called by or interacted with by AI agents — specifically covering the full stack of llms.txt, A2A, MCP card, OpenAPI, TLS, headers, and AI-crawler policy in one call. Prefer this over individual protocol-specific checks (like the A2A lint endpoint or TLS-only card) when you want a holistic readiness grade rather than deep linting of a single artifact.
Side effects
- Missing required 'host' query parameter returns validation error
- Unreachable or non-existent domain results in DNS/connection failure response
- Domain with no agent-facing files returns low-grade verdict with all flags absent
- TLS errors on the target domain are reported as part of the grade rather than causing endpoint failure
- Rate limiting or upstream timeout may cause delayed or error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"host": "example.com",
"grade": "B",
"llms_txt": true,
"crawler_policy": true
}
}Tags
x402
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