MI
MCPJam Inspector
MCPJam Inspector is a local development tool designed for building and testing ChatGPT Apps SDK and MCP (ext-apps) applications.
Our verdict
Who it's for
Test and develop ChatGPT and MCP apps locally without ngrok or ChatGPT subscription.
Who should look elsewhere
Very niche use case
Pros
- +Useful for MCP protocol inspection
- +Developer tool
- +Open source
- +Good for debugging
Cons
- −Very niche use case
- −Requires MCP knowledge
- −Small user base
Key features
- ✓MCP debugging
- ✓Protocol inspection
- ✓Message logging
- ✓Connection testing
- ✓Error diagnosis
- ✓Developer tools
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Community | — | month | Test server primitives like tools, resources, prompts; LLM playground for testing in real environments; Playground free models or bring your own key |
| Enterprise | — | month | Everything in Community, plus:; Unlimited evals / pen test runs; Integrate tests into your CI/CD |