MCPJam Inspector

Test and debug MCP servers before they ship

Open-source platform for inspecting, debugging and regression-testing MCP servers, MCP Apps and ChatGPT apps, with OAuth and protocol conformance for local and CI workflows.

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About MCPJam Inspector

MCPJam Inspector is an open-source testing and evaluation platform for developers shipping MCP servers, MCP Apps and ChatGPT apps. It combines hosted, desktop, terminal and Docker workflows for connecting to HTTP/S and local STDIO servers, while its visual playground exposes tools, resources, prompts, app interfaces, JSON-RPC traces, OAuth exchanges and widget behavior. The CLI and SDK add stateless probing, direct tool calls, OAuth, MCP Apps and protocol conformance, cross-client evaluations and machine-readable CI reports so teams can detect regressions before release. MCPJam overlaps the official MCP Inspector for manual protocol inspection but extends the workflow toward client compatibility, evaluation history, collaboration and continuous quality gates; it is a separate product, repository and brand rather than a fork or repackage. Hosted usage has Community, Team and Enterprise tiers, while the Inspector repository is available under its documented Apache-2.0 terms. Anonymous CLI telemetry can be inspected or disabled. MCPJam is best for MCP teams that need repeatable compatibility, authentication and behavior evidence; teams seeking only a minimal official protocol debugger may prefer MCP Inspector.

Pricing & Platform Specs

Pricing Summary

Community tier is free at $0/month with 200 credits/day and 25 eval iterations/day. Team plan is $30 per seat/month (billed annually) with 10,000 credits/seat/month and 5,000 eval iterations/month. Enterprise tier requires custom pricing with annual commitments. Self-hosted Inspector is free under Apache-2.0.

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Supported Platforms

Hosted HTTPS web app, macOS and Windows desktop apps, local terminal Inspector for HTTP/S and STDIO, Docker, plus CLI and SDK paths for CI/CD. The hosted app does not cover local STDIO, tunneling, local skills or tasks.

Explore categories, tags & use cases

Use Cases

Testing & QA Automation API Integration Security Auditing

Alternatives

All MCPJam Inspector alternatives →

MCP Inspector

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MCP Inspector is the official interactive developer tool from the Model Context Protocol team for testing, debugging, and validating MCP servers. It provides a visual interface to inspect available tools, test transport configurations, export configs for different clients, and verify protocol compliance during MCP server development.

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MCP-Scan

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MCP-Scan is a security tool that scans MCP servers for vulnerabilities including tool poisoning, prompt injection, cross-origin escalation, and rug pull attacks. Acquired by Snyk in 2026, it is the first dedicated security scanner for the MCP ecosystem. It analyzes tool descriptions, permissions, and behavior patterns to detect malicious or compromised MCP servers before they can exploit AI agents.

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Side-by-Side Comparisons

MCP Inspector

MCPJam Inspector

MCP Inspector vs MCPJam Inspector — Official Model Context Protocol Debugger vs Multi-Client Eval Suite

MCP Inspector is the official developer tool provided by the Model Context Protocol team for interactive local server testing and proxy inspection. MCPJam Inspector is an advanced testing suite designed for cross-client behavioral evaluations, multi-model playgrounds, and regression CI/CD gates.

MCP InspectorMCPJam Inspector

Community experience

Sources & verification

Sources checked: August 26, 2026
Content verified: August 26, 2026

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.

FAQ

What is MCPJam Inspector?

Open-source platform for inspecting, debugging and regression-testing MCP servers, MCP Apps and ChatGPT apps, with OAuth and protocol conformance for local and CI workflows.

Is MCPJam Inspector free?

MCPJam Inspector offers a free tier alongside paid plans. Community tier is free at $0/month with 200 credits/day and 25 eval iterations/day. Team plan is $30 per seat/month (billed annually) with 10,000 credits/seat/month and 5,000 eval iterations/month. Enterprise tier requires custom pricing with annual commitments. Self-hosted Inspector is free under Apache-2.0.

Is MCPJam Inspector open source?

Yes — MCPJam Inspector is open source.

Is MCPJam Inspector still maintained?

Yes — MCPJam Inspector is active. Its listing was last verified on August 26, 2026.

What are the best MCPJam Inspector alternatives?

The first editor-selected MCPJam Inspector alternatives are MCP Inspector, MCP-Scan.

MCPJam Inspector

About MCPJam Inspector

Pricing & Platform Specs

Pricing Summary

Supported Platforms

Categories

Tags

Use Cases

Alternatives

MCP Inspector