email_mx_verify
shallowdev.workers.sdnscreen.sdn-screen-x402/agent-preflight · Verify this server
Checks an email address without sending mail or opening SMTP: syntax, domain exists, MX records (or RFC 5321 A/AAAA fallback), RFC 7505 null MX, MX host resolves, disposable-domain list (~9.9k domains), role account (info@, support@) and free provider. Verdict deliverable_domain, risky, undeliverable or unknown. Cannot prove the mailbox itself exists. Use when an agent validates a signup, lead or contact email before using it. $0.01 USDC. Paid tool: call it once to get the x402 PaymentRequired object, then retry with params._meta["x402/payment"].
1 trials · measured today
email_mx_verify scores 100.0/100 on Vouch's measured behaviour index, from 1 real invocation trials against dev.workers.sdnscreen.sdn-screen-x402/agent-preflight, measured 20 Oct 2026 under methodology v0.2.0. Every measured component scored 100.
Component breakdown
| Component | Weight | Value |
|---|---|---|
| Reliability | 35% | not applicable |
| Schema integrity | 25% | 100.0 |
| Failure behaviour | 15% | not applicable |
| Latency | 15% | not applicable |
| Concurrency | 10% | not applicable |
Tool details
- Transport
- remote
- Credential class
- self-provisionable
- Input schema
- not declared
- Output schema
- not declared
- Side-effect classification
- unclassified
Score history
| Day | Score | Tier | Methodology |
|---|---|---|---|
| 2026-10-20 | 100.0 | shallow | v0.2.0 |
Probe evidence
| Probe | Outcomes |
|---|---|
| schema_integrity | pass: 1 |
Raw request/response logs are not archived yet — the outcome counts above are drawn directly from every recorded trial.
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