Toolsmith
Email verification and deliverability check without sending anything: syntax, MX records, disposable-domain detection (121k+ known domains), role-account and free-provider flags. JSON verdict with a bounce/deliverability risk level. Validat
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 363 ms
- Price
- $0.004 per call
- Paying buyers, last 30 days
- 5 (directory's own records)
- Paid calls, last 30 days
- 5
- Category
- DNS and domains
- Address
- https://toolcall.click/t/email/validate
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/2bd9e95d76f1.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).