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A2A Agent Discovery Manifest & Live Status
A2A Agent Discovery Manifest & Live Status is a paid API for AI agents from assay.agentdiet.dev, paid per call via MPP, $0.005000/call, status unknown (last checked 2026-10-23).
Returns the A2A agent discovery manifest and live operational status for a given A2A/MCP/x402 endpoint URL
Price / call$0.005000
Success—
StatusUnknown
How this service works
Return A2A agent discovery manifest and live status (Live x402 v2, IETF MPP & MCP endpoint at https://assay.agentdiet.dev)
Output
Returns a JSON object containing: the live status string (e.g. 'ok'), a letter grade indicating endpoint quality, an integer score, the audited target URL, and optional pagination fields (has_more, next_cursor) for retrieving additional audit records
Example use cases
Pre-integration agent discovery check
“Before I connect my agent to https://partner-agent.example.com, can you fetch its A2A discovery manifest and live status so I know what skills it exposes and whether it's actually online?”
Agent fleet health dashboard
“I manage several A2A agents — can you pull the discovery manifest and current status for https://agentdiet.dev so I can see its grade and score and add it to my dashboard?”
Onboarding a new MCP endpoint
“We're about to onboard a new MCP endpoint at https://tools.myagent.ai — can you retrieve its agent discovery manifest and live status, including the grade and readiness score, before we proceed?”
Technical details
Endpoint
GEThttps://assay.agentdiet.dev/?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to discover what an A2A, MCP, or x402 agent endpoint exposes and confirm it is live — specifically when you want a quick grade/score summary and discovery manifest without running a full deep security audit. Prefer this over the deeper audit endpoint when the goal is lightweight discovery and status checking rather than cryptographic certification.
Side effects
- Invalid or unreachable target URL returns an error status or low score
- Malformed URL input causes a 400/422 validation error
- Target endpoint is offline, returning a degraded status or failed grade
- Pagination cursor is invalid or expired, causing cursor-related errors
- Rate limiting or payment failure resulting in a 402 or 429 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| targetrequired | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| graderequired | string | |
| scorerequired | integer | |
| statusrequired | string | |
| target | string | |
| has_more | boolean | |
| next_cursor | string |
Reviews
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