"Free PostgreSQL Database Solutions" matching MCP connectors:

Scan/purge hidden text & score web domains: TLS, DNS, headers, speed. Free scans, $0.01 actions.

Issue signed receipts for AI agent actions; verify any receipt offline - free, no account.

Free anonymous website, DNS, email and TLS checks, plus read-only access to your monitors.

Free MCP window into a live autonomous machine-economy experiment: telemetry, hypothesis scoreboard.

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

Core Web Vitals metrics by CMS, CDN, and framework — free remote MCP, no auth.

Track cost, latency, and usage of every MCP tool call from any client (Claude, Cursor, Windsurf). Free 25K calls/month — open-source proxy, EU-hosted.

Uptime, SSL, domain, and Core Web Vitals monitoring for websites and APIs. List, create, update, and pause monitors; read incident history with AI-generated diagnosis; pull Lighthouse and CrUX page speed data. OAuth 2.0 with dynamic client registration — works out of the box with Claude Desktop connectors. Free plan: 20 monitors, read-only MCP.

AI visibility across 8 LLM platforms. 30 tools, most need no API key. EU-hosted, free.

Hosted MCP server for PostgreSQL diagnostics: slow queries, missing indexes, connection pressure.

Free MCP tools: the only MCP linter, health checks, cost estimation, and trust evaluation.

Trust checks for MCP servers: trust scores, tool-drift detection, signed diligence receipts. Free.

Privacy-first, cookie-free web analytics: create sites, install and verify tracking, read stats.

Agent-native uptime monitoring. Create, inspect, and assert monitor health. Free 50-monitor tier.