MARKET MONITOR / CATALOGUE Services 152,302 MCP listed 46,288 x402 106,143 Rails Base / Solana / Polygon / Arbitrum Imported 2026-11-09 · 3 sources

Comms & Messaging

Email, chat, SMS and notification delivery. Most of these need the operator’s own account or key before anything is sent.

3,474 services with a source 145 pages

Per domain import quota x402 REST usage

Import throttling: retain at most the supplied candidate quota per recipient domain. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are nev...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Plus tag disclosure x402 REST usage

Import audit: identify plus-tagged recipients without folding aliases. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Potential case aliases x402 REST usage

Potential local-part case collisions; preserve both addresses. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 so...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Potential dot aliases x402 REST usage

Potential dot aliases; never apply Gmail rules globally. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source r...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Potential plus aliases x402 REST usage

Potential plus-tag aliases; never merge across providers. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Punycode domain review x402 REST usage

Import audit: identify IDNA punycode labels. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source rows;65s engi...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Quoted local review x402 REST usage

Import compatibility: identify quoted local parts for specialist review. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. U...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Recipient domain distribution x402 REST usage

Campaign infrastructure: derive recipient-domain distribution. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 so...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Removed csv export x402 REST usage

Import handoff: export rejected-row repair queue as csv. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source r...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Removed ndjson export x402 REST usage

Import handoff: export rejected-row repair queue as ndjson. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 sourc...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Review csv export x402 REST usage

Import handoff: export manual-review queue as csv. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source rows;65...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Review ndjson export x402 REST usage

Import handoff: export manual-review queue as ndjson. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source rows...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Smtp octet compatibility x402 REST usage

Legacy transport: report actual UTF-8 address/local/domain octet lengths. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded....

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Suppression list apply x402 REST usage

Campaign safety: apply customer-supplied exact-address suppression list. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. U...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Unicode domain source review x402 REST usage

Legacy importer compatibility: identify original internationalized domain tokens before IDNA normalization. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case...

buero.halowerk.com Comms & Messaging 1 calls / 30d checked 2026-11-09
0.004 USDC per call per call

Lordevo Date calculator x402 REST usage

Date calculator: add durations, business days, difference between dates: Date arithmetic offline: adds or subtracts durations (ISO 8601 or plain text, including business days with your weekend and holiday list), and give...

shop.lordevo.com Comms & Messaging 2 calls / 30d checked 2026-11-09
0.002 USDC per call per call

Email Check x402 REST usage

Use when an agent is about to email or sign up a contact. Input: email. Output: JSON verdict (deliverable, risky, undeliverable) with reasons, MX hosts, null MX, SPF and DMARC policy, disposable domain, role account, fre...

1gateway.dev Comms & Messaging 2 calls / 30d checked 2026-11-09
0.002 USDC per call per call

Validate x402 REST usage

Check an email address before sending: syntax, whether the domain exists and accepts mail (MX records), disposable or free-mail provider, role account (info@, support@), and a verdict.

manylives.me Comms & Messaging 2 calls / 30d checked 2026-11-01
0.002 USDC per call per call

Season calendar x402 REST usage

Monthly German-origin quotation shares across all available BLE years for every product group or a list. Example: products ["Tomaten","Gurken"]. Counts and years per month; mass and piece units stay separate. Quotation s...

ernte.halowerk.com Comms & Messaging 2 calls / 30d checked 2026-11-09
0.002 USDC per call per call

Detect x402 REST usage

Scan and redact PII from text before storing or sharing. Detects emails, phone numbers, credit cards (Luhn-checked), SSNs, IDs, passports, and IPv4 addresses. Returns sanitized text. Max 50,000 chars. Expect some false p...

x402.fairseal.io Comms & Messaging 4 calls / 30d checked 2026-11-09
0.001 USDC per call per call

To jdn x402 REST usage

Convert a proleptic-Gregorian calendar date to its Julian Day Number (the integer count of days since JDN 0, 1 January 4713 BC in the proleptic Julian calendar).

datetime.openverbs.com Comms & Messaging 1 calls / 30d checked 2026-11-06
0.004 USDC per call per call

Email verify x402 REST usage

GlianaAI - Pay-per-call AI models, live market data, SEC filings and identity APIs, no signup, USDC. This resource: tools/email-verify. Check an email address can receive mail, without sending any. https://ai.glianalabs....

api.glianalabs.com Comms & Messaging 2 calls / 30d checked 2026-11-09
0.002 USDC per call per call

Parse a DMARC record x402 REST usage

Parse a DMARC TXT record ("v=DMARC1; p=…") into its policy, alignment, sampling and reporting tags. Missing or invalid policy/alignment/pct values are clean 400s.

emailauth.openverbs.com Comms & Messaging 1 calls / 30d checked 2026-11-05
0.004 USDC per call per call

Parse a DKIM key record x402 REST usage

Parse a DKIM public-key DNS TXT record ("v=DKIM1; k=rsa; p=…") into its key type, public key, hash algorithms, service types and flags. An empty `p` is reported as a revoked key. A missing `p` tag is a clean 400.

emailauth.openverbs.com Comms & Messaging 1 calls / 30d checked 2026-11-05
0.004 USDC per call per call

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