"Free PostgreSQL Database Solutions" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Send and receive webhooks without building delivery queues or customer webhook controls. Relin lets your software and AI assistants set up inbound handlers, manage outbound events and customer endpoints, inspect delivery health, and retry failed deliveries. A generous free plan is available; no paid subscription is required.
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.
Free-trial AI fleet spend meter. Quote agent fleet spend from token usage. 100 calls or 14 days. No auth. Official MCP Registry: io.github.mtardy90-sudo/bootlace-ai-spendmap.
Scan/purge hidden text & score web domains: TLS, DNS, headers, speed. Free scans, $0.01 actions.
Hear it from nimo, not your customers. Monitoring that tells you the fix, not just the alert: uptime, Core Web Vitals, cron check-ins, plus Journey Watch for your signup and checkout flows. Free one-off checks, no account needed.
Free anonymous website, DNS, email and TLS checks, plus monitor read and opt-in write access.
RealUptime monitors, incidents, status pages, Errors issues, and free third-party outage checks.
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.
Free spend report from an agent log, no key. Hosted proxies: caps, audit export, buy calls.
{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key
Core Web Vitals metrics by CMS, CDN, and framework — free remote MCP, no auth.
Free MCP window into a live autonomous machine-economy experiment: telemetry, hypothesis scoreboard.
186 real AI agent post-mortems, 107 of them measurement failures. Free tools, paid via x402.
Free uptime monitoring: HTTP/TCP/TLS/DNS + MCP server checks, cron heartbeats, status pages, alerts.
Issue signed receipts for AI agent actions; verify any receipt offline - free, no account.
Free MCP tools: the only MCP linter, health checks, cost estimation, and trust evaluation.
Brazilian hosting operated end to end by the coding agent: create an app, provision PostgreSQL, Redis and object storage, deploy from GitHub Actions, read container logs, measure memory and CPU, and see the cost in BRL before spending it. Irreversible operations require a human approval code that the agent never sees. Prepaid credit, paid by Pix.
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.
Privacy-first, cookie-free web analytics: create sites, install and verify tracking, read stats.
