Roundhouse AI

EmailGuard

Put a deterministic safety gate before consequential shell, Git, SQL, infrastructure, deploy, x402, and MCP actions, then preserve machine-readable evidence and receipts.

DataLiveeip155:8453Exactvia cdp
https://hermesplant.com/api/agent-services/emailguard/validate
EmailValidationEnrichmentData-qualityx402
Settlements · 30d
2↓ 100%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$15.73
Verified settled volume
108 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-01 04:09Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x5171C72a59b994a80097b6ab52D4A4FcB8BF4c1B

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0x5171…F4c1B. The signed payment is good for 5 minutes.

Paid to
0x5171…F4c1B
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
20000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x5171C72a59b994a80097b6ab52D4A4FcB8BF4c1B",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "name": "Alice Example",
          "email": "alice+work@gnail.com",
          "mxPresent": true
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json",
        "pathParams": {}
      },
      "output": {
        "type": "json",
        "example": {
          "valid": true,
          "checks": [
            {
              "fix": null,
              "why": "Email must contain a valid local part and domain with a dot.",
              "pass": true,
              "rule": "rfc5322-syntax",
              "evidence": "parsed local=alice domain=gnail.com",
              "severity": "info"
            },
            {
              "fix": "Use alice@gmail.com instead.",
              "why": "Domain is close to a popular provider and may be a typo.",
              "pass": false,
              "rule": "typo-suggestion",
              "evidence": "input domain=\"gnail.com\" suggestion=\"gmail.com\"",
              "severity": "warn"
            }
          ],
          "riskLevel": "medium",
          "normalized": {
            "domain": "gnail.com",
            "canonical": "alice@gnail.com",
            "localPart": "alice"
          },
          "classification": {
            "roleBased": false,
            "disposable": false,
            "freeProvider": false,
            "typoSuggestion": "gmail.com"
          },
          "deliverabilityScore": 55
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "required": [
                "email"
              ],
              "properties": {
                "name": {
                  "type": "string",
                  "description": "Optional contact name associated with the email."
                },
                "email": {
                  "type": "string",
                  "description": "The email address to validate and score."
                },
                "domain": {
                  "type": "string",
                  "description": "Optional explicit domain hint (usually derived from email)."
                },
                "mxPresent": {
                  "type": "boolean",
                  "description": "Caller-supplied hint whether the domain has MX records. Never performs DNS itself."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "routeTemplate": ":var1"
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "required"
      ],
      "properties": {
        "id": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9_-]+$",
          "maxLength": 128,
          "minLength": 16
        },
        "required": {
          "type": "boolean"
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-01 04:09Z
Last indexed by Roundhouse
2026-07-30 11:30Z
Last enriched (probe, favicon, geo)
2026-09-24 18:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service EmailGuard and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=EmailGuard'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://hermesplant.com/api/agent-services/emailguard/validate, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.