MCPJam is a reliability platform for developers building MCP servers, ChatGPT apps, and other agent-facing software.
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It provides infrastructure to test, debug, and validate server behavior across various AI clients, models, and OAuth flows.
- 01
Cross-client Playground and inspector for testing across 16 AI clients
- 02
OAuth and EMA debugger for step-by-step request visualization
- 03
Automated evaluations and CI/CD gates for regression testing
- 04
Synthetic agent swarms and user testing environments
- 05
CLI and SDK for local development and integration into pipelines
| ProEntry plan | $29 | per month |
| Team | $249 | per month |
Free tier includes unlimited seats and core testing features with 200 credits daily and a one-time grant of 500 eval iterations. Paid plans include Pro ($29/month or $24/month annually) and Team ($249/month or $199/month annually) which increase credit allowances, add support, and offer extended history. Enterprise plans offer custom pricing with advanced governance and support.
Best for
Developers building MCP servers or ChatGPT apps who need to ensure their software functions correctly across different AI clients and agent configurations.
Not ideal for
Evaluating agents you built yourself rather than the server being called by external clients, or developers who only require basic, raw JSON-RPC protocol inspection.
A specialized, highly effective tool for MCP server developers that offers significant value through its free tier, particularly for OAuth debugging and cross-client consistency. While the credit-based pricing model requires careful monitoring, it is an essential addition for teams looking to enforce reliability gates in their CI/CD pipelines.
The platform continues to expand support for emerging standards, with recent updates including Skills over MCP, WebMCP testing capabilities, and ongoing monthly client changelogs tracking updates for hosts like Claude, Cursor, and ChatGPT.
As of
Is MCPJam free?+
MCPJam is Freemium. Free tier includes unlimited seats and core testing features with 200 credits daily and a one-time grant of 500 eval iterations. Paid plans include Pro ($29/month or $24/month annually) and Team ($249/month or $199/month annually) which increase credit allowances, add support, and offer extended history. Enterprise plans offer custom pricing with advanced governance and support. Check the official site for current plans.
Is MCPJam open source?+
MCPJam is not listed as open source on ai.dosa.dev - it is Freemium.
How much does MCPJam cost?+
Free tier includes unlimited seats and core testing features with 200 credits daily and a one-time grant of 500 eval iterations. Paid plans include Pro ($29/month or $24/month annually) and Team ($249/month or $199/month annually) which increase credit allowances, add support, and offer extended history. Enterprise plans offer custom pricing with advanced governance and support. Pricing changes often - verify on the official site.
Who is MCPJam best for?+
Developers building MCP servers or ChatGPT apps who need to ensure their software functions correctly across different AI clients and agent configurations.
Who is MCPJam not ideal for?+
Evaluating agents you built yourself rather than the server being called by external clients, or developers who only require basic, raw JSON-RPC protocol inspection.
What are the best MCPJam alternatives?+
The closest MCPJam alternatives on ai.dosa.dev are Claude Code, Codex CLI, Amp - all listed under Terminal & CLI Agents.
Who makes MCPJam?+
MCPJam is developed by MCPJam. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.
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