---
title: "MCP Inspector Pricing, Features & Alternatives (2026)"
description: "MCP Inspector review: MCP Testing & Hosting tool — Free tier, plans, pros & cons, and the best MCP Inspector alternatives compared for startups in 2026."
source: https://appstackbuilder.com/tools/mcp-inspector
retrieved: 2026-10-07
---

![MCP Inspector logo](https://www.google.com/s2/favicons?domain=modelcontextprotocol.io&sz=128)

[MCP Testing & Hosting](https://appstackbuilder.com/categories/mcp-tools)Free tier

# MCP Inspector: Pricing, Features & Alternatives

MCP Inspector is the reference testing tool maintained by the Model Context Protocol project. Run \`npx @modelcontextprotocol/inspector\` against any server and you get a local web UI that lists its tools, resources and prompts, lets you call each one with your own arguments, and shows every protocol message. The same binary also ships a scriptable CLI for CI and a terminal UI. It is free and open source (MIT, moving to Apache-2.0), with around 11,000 GitHub stars as of October 2026\. It tests the protocol, not the model: there is no LLM chat or eval suite.

Category

MCP Testing & Hosting

Pricing

Free tier available

Free tier

Yes

Best for

MCP Testing & Hosting — mcp, testing

[Visit MCP Inspector official site](https://github.com/modelcontextprotocol/inspector)

## MCP Inspector Pricing Plans (2026)

| Plan               | Price | Highlights                                                                      |
| ------------------ | ----- | ------------------------------------------------------------------------------- |
| Open SourcePopular | $0    | Web UI, CLI and TUI · STDIO, SSE and Streamable HTTP · Raw JSON-RPC message log |

Pricing summary: Free. Always confirm current pricing on the official site.

## Key MCP Inspector Features

* ✓Web UI, CLI and TUI
* ✓STDIO, SSE and Streamable HTTP
* ✓Raw JSON-RPC message log

### ✓ Pros

* +Official reference tool, always current with the spec
* +Free and open source
* +CLI mode scripts into CI

### ✗ Cons

* −No LLM playground or evals
* −Local only, nothing shared with a team
* −Bare-bones UI

## Best MCP Inspector Alternatives

[Compare all ](https://appstackbuilder.com/tool-alternatives/mcp-inspector)

[![MCP Playground Online logo](https://www.google.com/s2/favicons?domain=mcpplaygroundonline.com&sz=128)MCP Playground OnlineFree](https://appstackbuilder.com/tools/mcp-playground-online)[![Smithery logo](https://www.google.com/s2/favicons?domain=smithery.ai&sz=128)SmitheryFree · paid from $10/mo](https://appstackbuilder.com/tools/smithery)

## MCP Inspector Compared

[MCP Inspector vs MCP Playground Online](https://appstackbuilder.com/compare/mcp-inspector-vs-mcp-playground-online)[MCP Inspector vs Smithery](https://appstackbuilder.com/compare/mcp-inspector-vs-smithery)

## MCP Inspector FAQ

What is MCP Inspector used for?⌄

MCP Inspector is a mcp testing & hosting tool. The official open-source debugger for MCP servers: list tools, call them by hand and read the raw JSON-RPC traffic.

Is MCP Inspector free?⌄

Yes — MCP Inspector has a free tier you can start with, and paid plans for more usage and features.

How much does MCP Inspector cost?⌄

MCP Inspector is free to use.

What are the best MCP Inspector alternatives?⌄

Popular MCP Inspector alternatives include MCP Playground Online, Smithery. Compare pricing and features on our MCP Inspector alternatives page.

## Not sure if MCP Inspector fits your stack?

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