MARKET MONITOR / CATALOGUE Services 117,253 MCP listed 40,082 x402 77,234 Rails Base / Solana / Polygon / Arbitrum Imported 2026-10-27 · 3 sources
Task

Deliverability

45 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.

HubVibe x402 REST usage

Full website audit in one call: accessibility (WCAG 2.1 A/AA via axe-core), on-page SEO, HTTP security headers and page speed / page weight, from a single browser load of one URL. Cheaper than four separate calls; if any...

hubvibe-io.com Security 581 calls / 30d checked 2026-10-27
0.15 USDC per call per call

NetIntel x402 REST usage

Email deliverability & domain security check — validates SPF, DKIM (multi-selector), and DMARC, detects spoofing and misconfigurations, and returns an A–F email security grade with transparent deductions. Anti-spam / ant...

netintel.dev Security 641 calls / 30d checked 2026-10-27
0.002 USDC per call per call

Domain security audit - PRO x402 REST usage

The deeper tier: everything in the standard audit plus the attack surface from Certificate Transparency logs (subdomains), the detected tech stack, and domain registration, in a longer graded report with a fuller remedia...

agent402.tools Security 1 calls / 30d checked 2026-10-27
0.85 USDC per call per call

Domain security & x402 REST usage

Hand over a domain and get one graded security & email-deliverability audit: SPF, DMARC, DKIM and MX (why your mail lands in spam), the web security headers, and the TLS certificate - every finding from a live probe, wit...

agent402.tools Security 1 calls / 30d checked 2026-10-27
0.6 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...

agents.tuski.ai Comms & Messaging 38 calls / 30d checked 2026-10-27
0.01 USDC per call per call

ProbeKit x402 REST usage

Run the mail configuration check (MX, SPF, DMARC) on up to 20 domains in one request. Results keep the input order, and items that fail for a technical reason come with a token for a free retry. Use when an agent must au...

api.probekit.dev Security 3 calls / 30d checked 2026-10-27
0.048 USDC per call per call

Agent Utility Suite x402 REST usage

Read any public URL as clean Markdown for an LLM: articles, docs, product pages, news, PDFs (text by page), RSS feeds and JSON. Real tables, code with language, math as TeX, absolute links; author, publish date and other...

x402-agent-api.onrender.com Web & Scraping 45 calls / 30d checked 2026-10-27
0.002 USDC per call per call

Email Auth SPF/DMARC/DKIM Check x402 REST usage

Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability an...

email-auth.use.x402atlas.com Comms & Messaging 8 calls / 30d checked 2026-10-27
0.01 USDC per call per call

Company Enrichment x402 REST usage

Email verification / validation API for lead lists (up to 20 addresses per call, ~1 s): syntax, domain mail setup (MX), mailbox provider (Google, Microsoft, Zoho, gateways), disposable / temporary domains (~10k), free we...

agent-data.centorprat.workers.dev Comms & Messaging 7 calls / 30d checked 2026-10-27
0.01 USDC per call per call

DNS Doctor x402 REST usage

One DNS Doctor bulk scan of 2-50 domains in a single call, priced per domain.

dnsdoctor.dev Web & Scraping 7 calls / 30d checked 2026-10-27
0.01 USDC per call per call

Sift Web Tools x402 REST usage

Find a site's RSS/Atom feeds and return the latest items. Discovers RSS or Atom feeds for a site or page and returns the latest items with title, link, date and summary.

sift.srv1996466.hstgr.cloud Productivity & Docs 29 calls / 30d checked 2026-10-27
0.002 USDC per call per call

Qonoro Email Validator x402 REST usage

Validates email deliverability: syntax check, MX record lookup, and SMTP server reachability. Returns risk score and quality rating. Deterministic, sub-second. x402-native.

api.qonoro.ai Comms & Messaging 11 calls / 30d checked 2026-10-27
0.005 USDC per call per call

DNS A Record Lookup x402 REST usage

DNS A record lookup — resolve any hostname or domain to its IPv4 addresses, returned as a clean JSON list. For host resolution, connectivity and uptime checks, IP-reputation enrichment and infrastructure mapping.

dns.use.x402atlas.com Geo & Maps 9 calls / 30d checked 2026-10-27
0.005 USDC per call per call

Saylor Innovations Net Checks x402 REST usage

Email address validation - syntax, MX records, disposable and role address detection and typo suggestions before you send

saylorinnovations.com Comms & Messaging 4 calls / 30d checked 2026-10-27
0.01 USDC per call per call

Email Auth Check x402 REST usage

Give it domains. For each it reads SPF, DMARC, DKIM and MX over keyless DNS-over-HTTPS and composes an anti-spoofing posture with specific findings and a signal (protected / mostly-protected / monitoring-only / spoofable...

agent-data.centorprat.workers.dev Comms & Messaging 4 calls / 30d checked 2026-10-27
0.01 USDC per call per call

Email Verification SMTP x402 REST usage

Email verification: checks whether an email address really exists by asking its mail server (SMTP RCPT TO probe; no email is sent), on top of syntax, MX, disposable and role checks. Returns status deliverable, undelivera...

agentsvc.io Comms & Messaging 15 calls / 30d checked 2026-10-27
0.0025 USDC per call per call

Toolsmith x402 REST usage

Foreign exchange reference rates from the European Central Bank. Base currency plus optional symbols filter. Updated daily on ECB schedule. JSON response. $0.002 USDC per call, pay via x402, no API key.

toolcall.click Crypto & Payments 15 calls / 30d checked 2026-10-27
0.002 USDC per call per call

InboxGuards Email Test x402 REST usage

Validate an email address before sending: syntax, MX, disposable and role account. $0.005 USDC on Base per call. Returns a verdict of ok, risky or undeliverable with syntax, MX, disposable (CC0 list), role account and fr...

api.inboxguardstest.com Comms & Messaging 5 calls / 30d checked 2026-10-27
0.005 USDC per call per call

d21 email_validate x402 REST usage

Email Validate ($0.006): syntax + live MX/A-fallback deliverability + disposable-domain + role-address + free-webmail-provider + SPF/DMARC, with no third-party validation vendor at all -- syntax is RFC 5321/5322 grammar,...

draconic21-x402-api.onrender.com Comms & Messaging 4 calls / 30d checked 2026-10-27
0.006 USDC per call per call

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 6 calls / 30d checked 2026-10-27
0.004 USDC per call per call

AgentUtility.ai x402 REST usage

Keyword and autocomplete suggestions for any seed query. Aggregates Wikipedia OpenSearch and DuckDuckGo autocomplete (both public, no auth) into a de-duplicated ranked list — useful for SEO keyword research, content-gap...

x402.agentutility.ai Search & Research 12 calls / 30d checked 2026-10-27
0.002 USDC per call per call

Email security SPF DMARC x402 REST usage

Email security of a domain: MX, SPF (final policy, multiple-record and lookup-limit problems), DMARC (policy, subdomains, reporting), MTA-STS, TLS-RPT and BIMI, with a score and recommendations. Detects spoofable domains...

api.vextorium.com Comms & Messaging 5 calls / 30d checked 2026-10-27
0.004 USDC per call per call

Domain Email Auth Audit x402 REST usage

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 2026-10-27
0.01 USDC per call per call

eu-verify x402 REST usage

Latest-release metadata from the official PyPI JSON API (live): version, license, requires_python compatibility, requires_dist dependency specs (max 100), yanked flag, last upload time and project URLs. Query: ?pkg=reque...

data.greeneris.io Databases & Storage 10 calls / 30d checked 2026-10-27
0.002 USDC per call per call

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