Vet an email address or domain before sending to, signing up or accepting it. No SMTP mailbox probing. Pay per call over x402 v2 (HTTP 402) in USDC on Solana, Base, Polygon or Arbitrum; no signup or API key. This is a plain HTTPS JSON API, not an A2A JSON-RPC endpoint: call each skill with POST <skill url> and a JSON body (see OpenAPI).

A2A readiness

D · 47/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here B+, 96.7/100), which weighs availability, conformance, card completeness and speed. How the two differ

Valid Agent Card	10/10	Parseable Agent Card with the required fields.
Live JSON-RPC	0/25	Endpoint did not answer (209 ms).
Protocol version	5/10	Declares pre-1.0 A2A 0.3.0. Upgrade to v1.x for full points.
JWS signature	0/10	Card is unsigned.
Uptime (30 days)	15/15	3/3 probes succeeded; final after 5 probes in 30 days.
Skill declaration	5/10	Declares 2 skill(s) with structured metadata.
Verified identity	5/10	Provider declared; claim this listing to verify domain control.
Freshness + modern flags	5/5	seen in a source within 7 days; declares a modern payment/commerce flag.
Security declaration	2/5	Declares 1 security scheme(s).

Responsiveness: Responsive (209 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Payment evidence: agent_card — The listing's own card or descriptor declares payment. Also: catalog_listing. Qualifies the payment claim; adds no points.

Measured 2026-11-11.

Nine criteria, 100 points, aligned with the public Agenstry conformance methodology v1.1. Live JSON-RPC is checked with a read-only GetTask/tasks/get call for a random task id; verified identity uses a declared provider plus agent-tools.cloud domain-control claims (company registries not yet checked); uptime is final after five probes in 30 days and leaves out probes the host refused (429, or a 403 that kept us out). Grades: A>=90, B>=75, C>=60, D>=40, F<40. Display only: search order uses the quality grade.

Compared with peers

Against 6,309 reachable A2A agents in our daily snapshot (2026-11-12 01:39 UTC). Display only; it does not change search order.

Readiness: Higher than 37% of peers; This listing 47 · peer median 54
Latency: Faster than 86% of peers; This listing 204 ms · peer median 398 ms

Where it loses the most points, and how to win them back

Live JSON-RPC −25 — Answer JSON-RPC at the URL the Agent Card declares.
Now: Endpoint did not answer (209 ms).
JWS signature −10 — Sign the Agent Card (JWS).
Now: Card is unsigned.
Protocol version −5 — Support the current protocol revision.
Now: Declares pre-1.0 A2A 0.3.0. Upgrade to v1.x for full points.

How many agent tools actually work · All statistics

Skills

/v1/email ($0.002 USDC per call)

Email address check: verdict (deliverable_likely / risky / invalid) with reasons from syntax, MX/A records, disposable-provider list, role address, free provider, typo suggestion, SPF/DMARC/DKIM and domain age. One address per call. Endpoint: POST https://softbot-emailcheck-mainnet.softbot.workers.dev/v1/email. Price: $0.002 USDC per call (x402). Request: {"email": "[email protected]"}. Response: email, domain, verdict, reasons, dns, auth, disposable, free_provider, role_address, typo_suggestion, typo_suggestion_email, domain_age.

x402pay-per-callusdcemail
/v1/domain ($0.002 USDC per call)

Email domain check: whether a domain can receive mail (MX/A, null MX), is disposable or a free provider, likely typo, SPF/DMARC/DKIM posture and registration age. One domain per call. Endpoint: POST https://softbot-emailcheck-mainnet.softbot.workers.dev/v1/domain. Price: $0.002 USDC per call (x402). Request: {"domain": "grokbot.com"}. Response: domain, verdict, reasons, dns, auth, disposable, free_provider, typo_suggestion, domain_age.

x402pay-per-callusdcdomain

How to call

A2A endpoint (HTTP+JSON)

https://softbot-emailcheck-mainnet.softbot.workers.dev/

Agent card

https://softbot-emailcheck-mainnet.softbot.workers.dev/.well-known/agent-card.json

Documentation

https://softbot-emailcheck-mainnet.softbot.workers.dev/llms.txt

Homepage

https://softbot-studio.pages.dev

Listed in

Directories this entry was found in.

agenstry since 2026-10-28