"Free Network Graph Visualization Tools (No Account Required)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Pingstack monitors cron jobs and scheduled tasks with heartbeat checks, and checks websites, TCP ports, DNS records, SSL certificates and domain expiry. This MCP server lets your agent create, update, pause and delete checks, build dashboards and publish them as status pages, manage notification groups, and read incidents with their causes, uptime, run history and latency. Pause, delete and unpublish stay off until you turn them on. Browser sign-in, no API key needed.
Hundreds of pay-per-call tools for agents: company records, screening, validation, web reading.
Vigilia watches your live app, explains every problem in plain language and writes the fix prompt. Your AI fixes it; Vigilia confirms with real traffic. Vigilia watches web apps that are live with real users, including apps built with Lovable, Bolt, v0, Cursor and Claude Code. It catches errors, failed requests and downtime, explains each problem in plain language, and writes a fix prompt for it. Connect Vigilia to Claude and ask what's broken. Claude lists your open incidents worst first. For each one it reads the plain-language diagnosis, who it affects, the technical evidence (error, page, failing request, stack frames and what the visitor did right before) and Vigilia's fix prompt. In Claude Code or another coding agent, Claude can then fix the cause in your own codebase. Once you've deployed, it marks the incident fixed, and Vigilia watches real traffic to confirm the error stayed away. If it comes back, the incident reopens as a regression. You can also ask how an app is doing (uptime, open incidents, today's traffic), get the exact install snippet for a new project, and check that a live site is running Vigilia. Vigilia never reads or changes your code: the fixing happens in your session, by your AI, in front of you. The only tool that changes anything is marking an incident fixed (the install check just records its result on the app), and you can connect with read-only access. Your data is stored in the EU. Emails, tokens and card numbers are stripped from what visitors' browsers send, and only that scrubbed error context is sent to Anthropic to write the diagnosis. Requires a Vigilia account. The free plan covers one app; reporting backend errors (Supabase, Next.js routes, Workers) is part of Pro.
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.
Live vendor incidents in your AI assistant. Hundreds of status pages, one feed. Free active-outage checks with no signup; sign in for history, watchlists, and monitoring tools. Setup: https://www.huntertech.io/vendor-mcp
AI-native observability and security for engineering teams and coding agents. Search production logs in plain language, investigate issues and root causes, and create or edit live dashboards in your Sazabi workspace. Requires a Sazabi account (OAuth, or a secret key via the X-Sazabi-Secret-Key header).
Replay, verify and audit AI agent decisions with signed evidence. Public demo running on the fictional Acme Mutual insurance environment; a full integration is required to use Forge with real systems.
Game observability for Three.js, Phaser, Babylon.js, PlayCanvas, Unity, Godot, Unreal and GameMaker games. Ask what's wrong with your game and get ranked findings from real players' sessions: frame-time spikes by level, errors with the gameplay just before them, where players die, version comparisons, store reviews and each game's own dashboard. Sign in with your Glitchless account (OAuth); a new workspace can start on a demo game.
Read-only MCP server for diagnosing any WordPress site — security, performance, forms, logs, downtime — with evidence. The connector exposes no write operations and your AI never sees the site's credentials (secrets are redacted before output). Built for agencies managing many client WordPress sites. Free for 1 site.
Read a tool-call log from an AI agent run and see which calls failed, looped or were slow.
Public, read-only MCP for Myndock service discovery and observability. Query aggregate origin HTTP/MCP activity, country and action totals, latency, and acknowledged message deliveries over 1, 24, or 168 hours. Tools: get_service_info, get_statistics, get_support_info. No account or API key required. Discover a separate enrollment-only API for private agent tasks and encrypted exchanges; those actions are not public MCP tools.
Read browser bug recordings: video, console, network, steps. Fix the bug and comment back.
Read-only access to an ET Ducky organization's Windows and Linux agents, alerts, and fleet summary. Four tools list agents, get one agent with its latest health sample, list alerts, and summarize the fleet. Hosted Streamable HTTP endpoint, authenticated with an organization API token sent as a Bearer header.
Guardr keeps watch on the sites you manage. Check any domain from outside and get an A to F health grade for HTTP headers, TLS, DNS and cookies, with fix steps for configuration findings. Three tools: check_site runs a fresh check of one domain, list_sites lists the sites your account watches and get_site returns one watched site in detail. Read-only: Guardr proposes fixes and never changes a site. Needs a Guardr API key; the first site is free.
Scan/purge hidden text & score web domains: TLS, DNS, headers, speed. Free scans, $0.01 actions.
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.
Free anonymous website, DNS, email and TLS checks, plus monitor read and opt-in write access.
Independent verification for agents. Free read-only tools and a signed receipt on every call.
TPC Hosting network checks for AI: traceroute, DNS trace, HTTP/3, TTFB, SSL, SMTP, DNS, email. Free.
Security log tools: Windows/Entra error codes, log explainer, IP blocklists, attack scans
DNS comparison, Claude and cloud components/incidents, and website diagnostics. Free; no API key.
Read-only: recent incidents from public Atlassian Statuspage pages. Free, no API key.
Know when a job stops or a site goes down after the agent exits. Free monitors; paid extra coverage.
GPU fabric tools: NCCL benchmark analysis, degradation cost, cluster compatibility, XportL facts.
Read-only WooCommerce checkout and revenue incident diagnosis using privacy-safe store signals and public release evidence.
Observed facts on public MCP servers: protocol checks, tool changes, signed evidence. No verdicts.
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.
Operation-level risk guidance for consolidated MCP tools, including schema drift and retry signals.
Search + patterns, maturity assessment, context pricing, redaction checks - a practice as tools.
Agent cost, latency and quality analysis, report delivery and order status. Crypto payments paused.
Vouch — independently measured reliability scores for MCP tools, not self-reported claims.
Read-only MCP for AI usage profiles, leaderboards, stats, and docs; no writes or private data.
Free spend report from an agent log, no key. Hosted proxies: caps, audit export, buy calls.
Dead-man switch monitors for cron & AI agents with dependency-cascade alerts. No account needed.
Monitoring for agencies — uptime, SSL, DNS, blocklists, AI visibility, MCP health. 8 no-auth tools.
RealUptime monitors, incidents, status pages, Errors issues, and free third-party outage checks.
Discover Frontier inference capabilities and read sanitized usage through read-only tools.
MCP tool observatory: do registry servers answer, and are their answers true? No key.
Real-time status for 75+ AI services (OpenAI, Anthropic, Cursor). No auth, CORS-enabled.
