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📊 Intel view 📋 Audit JSON 🔄 Changelog
85
💰 Paid API

mailcheck.hugen.tokyo

mailcheck.hugen.tokyo · mailcheck.hugen.tokyo

6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana

🛡
Own this agent?
Verify the domain mailcheck.hugen.tokyo via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership
🔔 Watch this agent for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Enterprise feature. Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only). Sign in to subscribe
Our probe of this card is currently failing — 404 not found
We tried /.well-known/agent-card.json and got a 404. Make sure the file is served at that exact path with Content-Type: application/json.
Last attempt: 2026-07-14 00:44 Last success: 2026-07-14 Status: 404
Raw error HTTP 404
Trust score
26/100
grade F · 9 criteria
Uptime
8.9%
45 probes
Revenue · 30d
$0.00
wallet active · no inflow
Usage · 7d
0
no recent activity
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →
F
Conformance score: 26/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
info Live JSON-RPC 0/25
Live probe hasn't run yet.
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
fail Uptime track record 1/15
4/45 probes succeeded (9% uptime).
How to earn +14 points
Stabilise uptime
We probe every agent on a tiered schedule. Sustained 99 %+ uptime over 20+ checks scores full points. Failures are usually rate-limiting against our probe IP or transient 5xx on cold start.
Docs →
partial Skill declaration 6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: mailcheck.hugen.tokyo (https://mailcheck.hugen.tokyo). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
No securitySchemes declared (common for open agents, not penalised).
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 calls Public aggregate · no PII recorded

No calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.

Uptime
8.9%
45 probes
Response
0ms
last probe
Skills
0
declared
Streaming
SSE-capable

Endpoints

Pricing x402 on Base USDC
From $0.0050 per call
Endpoint Price Currency
https://mailcheck.hugen.tokyo/disposable 0.005 USDC
https://mailcheck.hugen.tokyo/mailcheck/disposable 0.01 USDC
https://mailcheck.hugen.tokyo/mailcheck/validate 0.01 USDC
https://mailcheck.hugen.tokyo/mx 0.005 USDC
https://mailcheck.hugen.tokyo/validate 0.005 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0x29322ea7ecb34aa6164cb2ddeb9ce650902e4f60 · basescan ↗
Agent cardhttps://mailcheck.hugen.tokyo/.well-known/agent-card.json
Providerhttps://mailcheck.hugen.tokyo
Docshttps://mailcheck.hugen.tokyo
Discovered via
agentic_market recrawl_hot recrawl_warm

Skills · 1 declared · mapped to canonical taxonomy

mailcheck.hugen.tokyo

6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-bas…

canonical Agent Profiles match 83%

Health · last 22 probes

When HTTP Live JSON-RPC Latency
2026-07-12 14:54:01 404
2026-07-08 15:07:39 404
2026-07-05 21:41:19 404
2026-07-04 17:38:47 404
2026-07-03 13:54:00 404
2026-07-02 11:22:55 404
2026-07-01 08:37:33 404
2026-06-30 01:57:09 404
2026-06-28 19:39:14 404
2026-06-27 14:23:52 404

Cheaper or better alternatives per-skill

↓ 1 skill cheaper elsewhere ↑ 1 higher quality peak save 80.0%

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/mailcheck.hugen.tokyo.svg)](https://agenstry.com/agents/mailcheck.hugen.tokyo)
[![Verified Business](https://agenstry.com/badge/mailcheck.hugen.tokyo/identity.svg)](https://agenstry.com/agents/mailcheck.hugen.tokyo)
[![Uptime](https://agenstry.com/badge/mailcheck.hugen.tokyo/uptime.svg)](https://agenstry.com/agents/mailcheck.hugen.tokyo)
[![A2A version](https://agenstry.com/badge/mailcheck.hugen.tokyo/protocol.svg)](https://agenstry.com/agents/mailcheck.hugen.tokyo)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "_source": "agentic.market",
  "service": {
    "id": "mailcheck-hugen-tokyo",
    "name": "mailcheck.hugen.tokyo",
    "description": "6 email validation checks in one call \u2014 syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana",
    "domain": "mailcheck.hugen.tokyo",
    "provider": "mailcheck.hugen.tokyo",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base",
      "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://mailcheck.hugen.tokyo/disposable",
        "description": "Instant disposable email detection \u2014 checks against 5,000+ known temporary email domains (Guerrilla Mail, Mailinator, Temp Mail, 10MinuteMail, and more). Returns boolean result. Maintaining this blocklist yourself requires weekly updates from multiple sources. Accepts USDC payments on Base and Solana",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "domain",
            "type": "string",
            "description": "",
            "example": "guerrillamail.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://mailcheck.hugen.tokyo/mailcheck/disposable",
        "description": "Instant disposable email detection \u2014 checks against 5,000+ known temporary email domains (Guerrilla Mail, Mailinator, Temp Mail, 10MinuteMail, and more). Returns boolean result. Maintaining this blocklist yourself requires weekly updates from multiple sources. Accepts USDC payments on Base and Solana",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "domain",
            "type": "string",
            "description": "",
            "example": "guerrillamail.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://mailcheck.hugen.tokyo/mailcheck/validate",
        "description": "6 email validation checks in one call \u2014 syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://mailcheck.hugen.tokyo/mx",
        "description": "MX record lookup for any domain \u2014 returns whether mail servers exist and their hostnames sorted by priority. Verify email deliverability before sending. Supports all TLDs including ccTLDs and new gTLDs. No DNS library setup needed. Accepts USDC payments on Base and Solana",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "domain",
            "type": "string",
            "description": "",
            "example": "gmail.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://mailcheck.hugen.tokyo/validate",
        "description": "6 email validation checks in one call \u2014 syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [],
        "serviceName": "",
        "tags": [],
        "quality": null
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.005",
      "maxAmount": "0.01",
      "avgCostPerTransaction": "0.007",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "",
    "tags": [],
    "iconUrl": ""
  }
}