Vellium & Co

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AgentTools

Probe a GET endpoint several times and report status codes and latency statistics (min/avg/max). The cheap way for an agent to verify an API — for example one found on the x402 Bazaar — responds before spending real money calling it. Use th

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
311 ms
Price
$0.005 per call
Paying buyers, last 30 days
3 (directory's own records)
Paid calls, last 30 days
6
Category
Health (non-drug)
Address
https://agenttools-hub.vercel.app/api/v1/dev/api-health-check

Accuracy: paid answers checked against an independent record

Not yet in our paid checks. A seller we have not checked has neither passed nor failed.

For agents

This page as JSON: /sellers/f9717db2b27c.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].