CommsHarbor
CommsHarbor: email security audit of a domain (SPF, DKIM, DMARC, MX and a score), paid per call
DataLiveeip155:8453Exactvia cdp
EmailMailbox-management
Calls · 30d
5
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$30.61
Verified settled volume
135 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
5
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-10-25 19:57Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x7c22D10a957c62044d03dB5C0086f500Fc645a26The 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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"name": "CommsHarbor",
"error": "Payment required: PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1)",
"action": "email_check_call",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7c22D10a957c62044d03dB5C0086f500Fc645a26",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://commsharbor.com/api/x402/email-check",
"description": "CommsHarbor: email security audit of a domain (SPF, DKIM, DMARC, MX and a score), paid per call",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"domain": "example.com"
},
"discoverable": true
},
"output": {
"type": "json",
"schema": {
"type": "object",
"properties": {
"mx": {
"type": "array",
"items": {
"type": "string"
},
"description": "MX records as `priority host`."
},
"spf": {
"type": "object",
"description": "`{record, ending, multiple}`: the first SPF record, its `all` ending and whether there are two."
},
"bimi": {
"type": "boolean",
"description": "A BIMI record exists at the default selector."
},
"dkim": {
"type": "object",
"description": "`{found, checked}`: selectors with a published key and the selectors looked up."
},
"dmarc": {
"type": "object",
"description": "`{record, policy, reports}`: policy reject, quarantine, none or null; reports when `rua` is set."
},
"score": {
"type": "integer",
"description": "0 to 100: DMARC up to 40, SPF 20, DKIM 20, MX 10, MTA-STS 5 and BIMI 5."
},
"domain": {
"type": "string",
"description": "Registrable domain that was checked."
},
"rating": {
"type": "string",
"description": "protected (90+), good (70+), at_risk (40+) or exposed."
},
"unread": {
"type": "array",
"items": {
"type": "string"
},
"description": "Parts whose DNS query failed (spf, dmarc, dkim, mx, mta_sts, bimi). They have no findings and no points."
},
"mta_sts": {
"type": "boolean",
"description": "An MTA-STS policy record exists."
},
"cobranca": {
"type": "object",
"properties": {
"via": {
"type": "string",
"description": "`x402`, `credito` or the marketplace that already charged the call."
},
"repetido": {
"type": "boolean",
"description": "`true` when the credit had already paid this request (the same `Idempotency-Key`): nothing was charged again."
},
"preco_usd": {
"type": "string",
"description": "The price of the call in US dollars, such as `0.01`."
},
"saldo_usd": {
"type": "string",
"description": "The credit balance after the call, such as `$0.99`; only when paid with `cred_…`."
}
},
"description": "How this call was paid."
},
"findings": {
"type": "array",
"items": {
"type": "object"
},
"description": "`{code, severity}`, most severe first. Codes: dmarc_missing, dmarc_none, spf_plus_all, spf_missing, spf_multiple, dmarc_quarantine, dkim_not_found, spf_neutral, spf_softfail, dmarc_no_reports, mx_missing, mta_sts_missing, bimi_missing."
},
"badge_url": {
"type": "string",
"description": "SVG badge with the score."
},
"share_url": {
"type": "string",
"description": "Public page with this result."
},
"checked_at": {
"type": "string",
"description": "ISO time of the DNS reading."
},
"incomplete": {
"type": "boolean",
"description": "At least one DNS query failed."
}
},
"description": "The email security audit of one domain, paid per call: the fields of `GET /api/email-check`."
}
},
"inputSchema": {
"queryParams": {
"type": "object",
"required": [
"domain"
],
"properties": {
"domain": {
"type": "string",
"description": "Public domain to check, such as example.com. A subdomain or URL is reduced to its registrable domain."
}
}
}
}
},
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
}
],
"billing": {
"dev": false,
"how": "Sign a USDC authorization on Base. Retry with PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1), containing the base64 PaymentPayload.",
"mode": "live",
"asset": "USDC",
"eip681": "ethereum:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913@8453/transfer?address=0x7c22D10a957c62044d03dB5C0086f500Fc645a26&uint256=10000",
"faucet": null,
"pay_to": "0x7c22D10a957c62044d03dB5C0086f500Fc645a26",
"homolog": false,
"network": "base",
"wallets": {
"base_app": "https://base.app/",
"coinbase": "https://www.coinbase.com/wallet",
"metamask": "https://metamask.io/download/"
},
"chain_id": 8453,
"dev_gate": false,
"price_usd": 0.01,
"alternavel": false,
"facilitator": "https://api.cdp.coinbase.com/platform/v2/x402",
"price_atomic": "10000",
"asset_address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"credito": {
"como": "Add balance once and spend it without signing each request.",
"usar": "Authorization: Bearer cred_… (or the X-Credito header)",
"vale_em": "all our products",
"recarregar": "https://commsharbor.com/api/credito",
"preco_desta_chamada": "$0.01"
},
"pacotes": {
"opcoes": [
{
"usd": 1,
"chamadas": 100
},
{
"usd": 5,
"chamadas": 500
},
{
"usd": 10,
"chamadas": 1000
},
{
"usd": 25,
"chamadas": 2500
}
],
"recarga": "https://commsharbor.com/api/credito"
},
"preco_usd": "0.01",
"por_chamada": true,
"x402Version": 1
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x7c22…45a26. The signed payment is good for 2 minutes.
- Paid to
- 0x7c22…45a26
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7c22D10a957c62044d03dB5C0086f500Fc645a26",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"domain": "example.com"
}
},
"output": {
"type": "json",
"example": {
"mx": [
"0 ."
],
"spf": {
"ending": "-all",
"record": "v=spf1 -all",
"multiple": false
},
"bimi": false,
"dkim": {
"found": [],
"checked": [
"google",
"selector1",
"selector2",
"default",
"k1",
"k2",
"mail",
"dkim",
"s1",
"s2",
"smtp",
"mx"
]
},
"dmarc": {
"policy": "reject",
"record": "v=DMARC1; adkim=s; aspf=s; p=reject; sp=reject",
"reports": false
},
"score": 65,
"domain": "example.com",
"rating": "at_risk",
"unread": [],
"mta_sts": false,
"cobranca": {
"via": "x402",
"repetido": false,
"preco_usd": "0.01"
},
"findings": [
{
"code": "dkim_not_found",
"severity": "medium"
},
{
"code": "dmarc_no_reports",
"severity": "low"
},
{
"code": "mta_sts_missing",
"severity": "low"
},
{
"code": "bimi_missing",
"severity": "low"
}
],
"badge_url": "https://commsharbor.com/api/email-check/badge?domain=example.com",
"share_url": "https://commsharbor.com/email-security-check?domain=example.com",
"checked_at": "2026-10-24T11:52:00.161Z",
"incomplete": false
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"domain"
],
"properties": {
"domain": {
"type": "string",
"description": "Public domain to check, such as example.com. A subdomain or URL is reduced to its registrable domain."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"mx": {
"type": "array",
"items": {
"type": "string"
},
"description": "MX records as `priority host`."
},
"spf": {
"type": "object",
"properties": {
"ending": {
"type": "string"
},
"record": {
"type": "string"
},
"multiple": {
"type": "boolean"
}
},
"description": "`{record, ending, multiple}`: the first SPF record, its `all` ending and whether there are two."
},
"bimi": {
"type": "boolean",
"description": "A BIMI record exists at the default selector."
},
"dkim": {
"type": "object",
"properties": {
"found": {
"type": "array"
},
"checked": {
"type": "array",
"items": {
"type": "string"
}
}
},
"description": "`{found, checked}`: selectors with a published key and the selectors looked up."
},
"dmarc": {
"type": "object",
"properties": {
"policy": {
"type": "string"
},
"record": {
"type": "string"
},
"reports": {
"type": "boolean"
}
},
"description": "`{record, policy, reports}`: policy reject, quarantine, none or null; reports when `rua` is set."
},
"score": {
"type": "number",
"description": "0 to 100: DMARC up to 40, SPF 20, DKIM 20, MX 10, MTA-STS 5 and BIMI 5."
},
"domain": {
"type": "string",
"description": "Registrable domain that was checked."
},
"rating": {
"type": "string",
"description": "protected (90+), good (70+), at_risk (40+) or exposed."
},
"unread": {
"type": "array",
"description": "Parts whose DNS query failed (spf, dmarc, dkim, mx, mta_sts, bimi). They have no findings and no points."
},
"mta_sts": {
"type": "boolean",
"description": "An MTA-STS policy record exists."
},
"cobranca": {
"type": "object",
"properties": {
"via": {
"type": "string",
"description": "`x402`, `credito` or the marketplace that already charged the call."
},
"repetido": {
"type": "boolean",
"description": "`true` when the credit had already paid this request (the same `Idempotency-Key`): nothing was charged again."
},
"preco_usd": {
"type": "string",
"description": "The price of the call in US dollars, such as `0.01`."
}
},
"description": "How this call was paid."
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"severity": {
"type": "string"
}
}
},
"description": "`{code, severity}`, most severe first. Codes: dmarc_missing, dmarc_none, spf_plus_all, spf_missing, spf_multiple, dmarc_quarantine, dkim_not_found, spf_neutral, spf_softfail, dmarc_no_reports, mx_missing, mta_sts_missing, bimi_missing."
},
"badge_url": {
"type": "string",
"description": "SVG badge with the score."
},
"share_url": {
"type": "string",
"description": "Public page with this result."
},
"checked_at": {
"type": "string",
"description": "ISO time of the DNS reading."
},
"incomplete": {
"type": "boolean",
"description": "At least one DNS query failed."
}
},
"description": "The email security audit of one domain, paid per call: the fields of `GET /api/email-check`."
}
}
}
}
}
},
"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
- 2026-10-25 19:57Z
- Last indexed by Roundhouse
- 2026-10-26 20:00Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 01:46Z
- x402 version
- 2
- Max timeout
- 120s
- Liveness probe
- HTTP 402
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
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service CommsHarbor 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=CommsHarbor' 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://commsharbor.com/api/x402/email-check, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.