"Services or tools that don't require a separate API key" matching MCP connectors:

SSRF-safe web intelligence: 4 outcomes, 43 paid x402 tools, 3 free tools and a URL preview.

Live internet-censorship signals and tamper-evident, pre-registered, hash-chained AI model evals.

Fixter's MCP provides a stream-lined agentic way to onboard, setup and use the Fixter monitoring and observability platform. Check out more at https://fixter.dev/

Read-only Amazon SES observability: search events, inspect bounces, pull delivery stats.

290+ quality-scored API capabilities for AI agents across 27 countries via MCP.

AI agent infrastructure: dedup, cost prediction, validation, governance, failure intelligence.

SupplyMaven supply chain risk management data including manufacturing, port and airport congestion, border, materials and macro indexes

CVE intelligence: exploitation (KEV/EPSS), detection coverage, fixed versions. All tools keyless.

Free uptime monitoring: HTTP/TCP/TLS/DNS checks, cron heartbeats, status pages, incident tools.

Usage metering + SLA accounting for agent services (the meter behind x402 micropayments).

Continuous website testing by Validoria — monitor security, SEO, performance, and accessibility.

Reproducible benchmarks and reliability evidence for agent tools.

Monitoring for agencies — uptime, SSL, DNS, blocklists, AI visibility, MCP health. 8 no-auth tools.

Verifier-grounded AI promotion gates, disposable report cards, and signed PASS/HOLD/BLOCK receipts.

Uptime watchdog and dead man switch for AI agents and cron jobs. Alerts you when a job goes silent.

Query analyzed WebRTC sessions: observations, deductions, experience scores, and AI summaries.

Peppol market intelligence and network monitoring: migrations, provider churn, leads, and uptime.

Check real-time uptime and incident status for 285 APIs and cloud services.

Revternal MCP — wraps the Revternal Developer Intelligence API

Live status for 172 cloud and SaaS vendors from their official feeds. Is it you, or is it them?