(no-JS users see [data-reveal] content fully visible). --><script>document.documentElement.classList.add('js')</script><meta charset="utf-8"><!-- Preload critical font (Geist Sans 400) --><link rel="preload" href="/_astro/geist-sans-latin-400-normal.gapTbOY8.woff2" as="font" type="font/woff2" crossorigin><!-- Favicons --><link rel="icon" href="/favicon.svg" type="image/svg+xml"><link rel="icon" href="/favicon.ico" sizes="32x32"><link rel="apple-touch-icon" href="/apple-touch-icon.png"><title>MCP Peek — Inspect, run & proxy MCP servers</title><meta name="description" content="MCP Peek is a desktop app to inspect, run, and proxy Model Context Protocol (MCP) servers. See every tool, resource and prompt, run them, and capture traffic."><meta name="viewport" content="width=device-width, initial-scale=1"><meta name="theme-color" content="#0C1322"><link rel="canonical" href="https://mcppeek.com/"><!-- Open Graph --><meta property="og:title" content="MCP Peek — Inspect, run & proxy MCP servers"><meta property="og:description" content="MCP Peek is a desktop app to inspect, run, and proxy Model Context Protocol (MCP) servers. See every tool, resource and prompt, run them, and capture traffic."><meta property="og:url" content="https://mcppeek.com/"><meta property="og:type" content="website"><meta property="og:image" content="https://mcppeek.com/og-default.png"><!-- Twitter --><meta name="twitter:card" content="summary_large_image"><meta name="twitter:title" content="MCP Peek — Inspect, run & proxy MCP servers"><meta name="twitter:description" content="MCP Peek is a desktop app to inspect, run, and proxy Model Context Protocol (MCP) servers. See every tool, resource and prompt, run them, and capture traffic."><meta name="twitter:image" content="https://mcppeek.com/og-default.png"><link rel="preload" href="/_astro/app-overview-dark.DtInuB_c_1VJcOs.webp" as="image" type="image/webp"><style>:root{--accent:#38BDF8;--glow:.7;--navy:#0C1322;--deep:#070C16;--panel-a:#0B1626;--panel-b:#0A1320;--indigo:#4B57D6;--link:#0369A1;--link-deep:#075985;--surface:#F6F8FB;--surface-alt:#EAF0F7;--surface-stage:#F7F9FC;--card:#fff;--border:#E6EBF1;--border-strong:#E3E8EF;--border-soft:#DEE6F0;--text:#161A21;--text-2:#1A1F27;--muted:#5A6473;--muted-2:#6B7480;--on-dark:#EAF1F8;--on-dark-hi:#F7FBFE;--st-explore:#0284C7;--st-run:#4B57D6;--st-read:#7C3AED;--st-budget:#0D9488;--st-brief:#D97706;--ok:#34D399;--warn:#F8A34A;--err:#F87171;--maxw:1200px;--font-sans:"Geist Sans","Geist",system-ui,-apple-system,sans-serif;--font-mono:"Geist Mono",ui-monospace,SFMono-Regular,monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}::selection{background:#38bdf847}@media(prefers-reduced-motion:reduce){:root{--glow:.35}html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
See inside your
MCP servers.
The desktop tool for inspecting and debugging MCP servers. Connect to any server, run its tools by hand, and read the real request, response, and timing behind every call — no model in the middle, no guessing.
$19 Pro — no subscription · macOS · Windows · Linux
Talk to the server. Not a model's idea of it.
MCP Peek is a developer tool for inspecting and debugging MCP servers — not a hub, gateway, or multiplexer. Asking an assistant to "try the tool" shows you what the model did with it — paraphrased, lossy, one step removed. MCP Peek connects straight to the server, so when you're building or debugging you work with the real thing:
Everything a server exposes — on one bench.
Sit in the middle. Watch every call.
Point Claude or Cursor at MCP Peek while you build, and watch the signal move — every call, its timing, tokens, and full request/response, plus a topology view and per-flow detail. A local debugging passthrough, not a production gateway.
{ "arguments": { "a": -15.5, "b": 0.5 }, "name": "get-sum" }
{ "content": [ { "text": "The sum of -15.5 and 0.5 is -15.", "type": "text" } ] }
alt: proxy view — live flow log of MCP calls with timing & tokens, beside a topology graph of the servers it sits in front of and inspects.
Your signal never leaves the machine.
Connections, secrets, and results stay local. Keys live in your OS keychain. The app does its work on your machine — analytics are off by default, and the UI makes no network calls of its own.
Pay once. Yours forever.
Not a subscription. One license, all future updates.
Frequently asked questions
Everything you might want to know before you download.
What is MCP Peek?
A desktop app for inspecting, exercising, and proxying MCP (Model Context Protocol) servers. Connect any server, browse its tools, resources, templates and prompts with token-cost estimates, run them, capture live traffic, and export review briefs for coding agents.
What is MCP (Model Context Protocol)?
An open standard that lets AI clients connect to external tools and data through “servers.” MCP Peek is a GUI for exploring and debugging those servers.
Which platforms are supported?
macOS (Apple Silicon and Intel), Windows, and Linux.
What’s included for free?
The full inspector on one server — browse the catalog, run tools, and flag items. Everything except the Pro features.
What do I get with Pro?
Unlimited servers, the proxy (live traffic capture), review-brief export, and unlimited saved input presets.
How much is Pro — is it a subscription?
$19, one time. No subscription. One license, all future updates — pay once, it’s yours forever.
What kind of MCP servers does it work with?
Any of them: local processes over STDIO, or remote HTTP endpoints, with bearer-token, OAuth, or custom-header authentication.
What is the proxy / “Live flow”?
A local endpoint you point your AI client at. MCP Peek sits between the client and your servers and captures every request and response, so you can see exactly what’s being sent.
Is my data private? Does it phone home?
MCP Peek runs locally — your server configs and traffic stay on your machine, and the UI makes no network calls of its own. Crash reports (EU-hosted, stripped of arguments, URLs and secrets) are on by default and can be turned off in settings; product analytics are off by default and opt-in.
What’s a “review brief”?
Flag any tool, resource, or prompt that needs changing — optionally attaching its schema, input, and last response — and export a clean Markdown brief to hand to a coding agent.
Still have questions? Get in touch.
Download MCP Peek
Free to explore and run. $19 once unlocks unlimited servers and the Proxy.
macOS universal (Apple Silicon & Intel) · Windows 64-bit · Linux 64-bit