MARKET MONITOR / CATALOGUE Services 131,002 MCP listed 40,656 x402 90,413 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-29 · 3 sources
Task

Deliverability

46 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.

Email validation | Vextorium x402 REST usage

Email validation: syntax, domain MX records and disposable-domain flag. Sends no email; the address is not stored.

api.vextorium.com Comms & Messaging 5 calls / 30d checked 2026-10-28
0.004 USDC per call per call

Domain Email Auth Audit x402 REST checked

Audit a domain's email authentication: MX, SPF, DMARC, DKIM (20 selectors), MTA-STS, TLS-RPT, BIMI and domain age. Returns an A-F grade with concrete fixes.

gogeta2-u35175.vm.elestio.app Comms & Messaging 2 calls / 30d checked 2026-10-28
0.01 USDC per call per call checked

TariffMonkee x402 REST usage

Health and payment-path check. Returns server time and confirms the x402 payment settled. The cheapest endpoint in the catalog at $0.001, intended for testing a client's payment flow.

tariffmonkee.com Crypto & Payments 19 calls / 30d checked 2026-10-29
0.001 USDC per call per call

Email Validate API x402 REST usage

Email validation for syntax, DNS/MX, disposable domain, role-based address, free provider and provider-typo checks. Returns normalized email, deliverability verdict, risk score, typo suggestion and structured validation...

tools.ipintel.ai Comms & Messaging 4 calls / 30d checked 2026-10-29
0.004 USDC per call per call

Tanod dnspeek x402 REST usage

dnspeek (Tanod) domain inspection (one section): DNS records, SPF/DMARC/DKIM/MTA-STS deliverability findings and the TLS cert. Heuristic, not an audit.

tanod.dev Comms & Messaging 3 calls / 30d checked 2026-10-29
0.004 USDC per call per call

HTTP check x402 REST usage

Check any public URL: status code, latency, final URL after redirects, and response headers. The uptime primitive for agent monitors.

agent402.tools Infrastructure 11 calls / 30d checked 2026-10-29
0.001 USDC per call per call

Lookproof x402 REST usage

Check the TLS certificate a domain serves on port 443: whether it chains to a trusted root, matches the name (RFC 9525) and when it expires, with issuer, chain, key and signature algorithm, TLS version and coded findings...

api.lookproof.dev Security 1 calls / 30d checked 2026-10-29
0.01 USDC per call per call

Tuski x402 REST usage

Create an email validation job from a JSON list of addresses or CSV text (send exactly one). Poll its status, then fetch results as JSON or CSV. Billing counts only testable addresses, fixed at creation; unreachable, dis...

tuski.pay.zeroclick.io Comms & Messaging 1 calls / 30d checked 2026-10-25
0.01 USDC per call per call

Email validate x402 REST usage

Validate an email address: syntax check plus live MX record lookup on the domain (deliverability signal, not a guarantee).

agent402.tools Comms & Messaging 10 calls / 30d checked 2026-10-29
0.001 USDC per call per call

Email Address Validator x402 REST usage

Validate one email address without sending mail: syntax, MX, disposable, free webmail, role account, SPF/DMARC. Returns deliverable/risky/undeliverable/invalid with score.

gogeta2-u35175.vm.elestio.app Comms & Messaging 3 calls / 30d checked 2026-10-29
0.003 USDC per call per call

Factline x402 REST usage

Currency exchange rates and FX conversion, official ECB reference rates for USD, EUR, GBP, JPY and 25 more. Use to convert an amount between currencies with an official, citable rate: the European Central Bank's referenc...

factline.dev Data & Finance 7 calls / 30d checked 2026-10-29
0.001 USDC per call per call

Email check x402 REST usage

Email/domain deliverability check: MX, provider, SPF, DMARC policy, disposable flag — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Comms & Messaging 2 calls / 30d checked 2026-10-27
0.003 USDC per call per call

Email Domain Security x402 REST usage

Email authentication audit of a domain: MX, SPF (lookup count and policy), DMARC policy and reporting, DKIM on common selectors, MTA-STS, TLS-RPT and BIMI, graded A-F with fixes. Use for deliverability and phishing-risk...

bess-x402.onrender.com Security 2 calls / 30d checked 2026-10-29
0.003 USDC per call per call

AllTheBot Email domain check x402 REST usage

MX records, SPF and DMARC check of a domain: does it accept email, its mail servers, SPF policy, DMARC policy and detected deliverability issues. DNS only, no SMTP.

api.zkrobotics.fr Comms & Messaging 2 calls / 30d checked 2026-10-29
0.003 USDC per call per call

gapfill x402 REST usage

Balances of a Base address: ETH and 22 major Base tokens (USDC, WETH, cbBTC, cbETH, DAI, AERO, DEGEN and more), plus up to 20 token addresses passed, read live in one batch, with USD prices from Chainlink feeds on Base o...

jotowl.com Crypto & Payments 1 calls / 30d checked 2026-10-27
0.005 USDC per call per call

ipv4.fr network tools x402 REST

Company profile from a domain for lead enrichment: name, one-line description, industry, business model, products, HQ country and city, founded year, size hint (AI-extracted from the site's own home, about and contact pa...

ipv4.fr Comms & Messaging checked 2026-10-29
0.02 USDC per call per call

MailCheck API x402 REST

Check 1-100 email addresses ($0.001 each): RFC syntax, normalization and canonical form, MX lookup (A fallback), disposable domain (CC0 list), role account, free provider, typo suggestion (gmial.com -> gmail.com), verdic...

mailcheck.toolschemaforge.workers.dev Comms & Messaging checked 2026-10-29
0.002 USDC per call per call

email-deliverability-report x402 REST

Email authentication and deliverability report for a domain in one call: SPF (with -all check), DMARC policy strength, DKIM presence across common selectors, MTA-STS, BIMI and MX, combined into a 0-100 score with an A-F...

intel.rallylive.ca Comms & Messaging checked 2026-10-29
0.05 USDC per call per call

DeFi Intel Agent Gateway x402 REST

Detect language, formality and tone of a text with confidence scores. Deterministic heuristics + compact wordlists. Returns iso_639-1 + register. — $0.001 USDC/call on eip155:8453. Pay-per-call via x402 — no API key, no...

defi-intel-agent-gateway.gg-neo15.workers.dev Crypto & Payments checked 2026-10-29
0.001 USDC per call per call

Readr MailCheck x402 REST

Email deliverability audit for a domain: MX records, parsed SPF with qualifier grading, DMARC policy grade, DKIM selector probing (12 common selectors), and DNSBL reputation checks (dronebl, SpamCop, Barracuda, Spamhaus)...

failure.zo.space Comms & Messaging checked 2026-10-29
no price published

orbit Web Tools x402 REST

AI-agent readiness audit, $0.001 USDC per call: How ready is a website for AI agents? Live checks of /llms.txt, robots.txt rules for 12 AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, CCBot…), sitemap.xml...

orbit-web.orbit-builder.workers.dev Crypto & Payments checked 2026-10-29
0.001 USDC per call per call

Email deliverability x402 REST

email deliverability and spoofing check from DNS: MX, SPF and DMARC records with concise risk flags.

relay402.georgespring.workers.dev Comms & Messaging checked 2026-10-29
0.005 USDC per call per call

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