MCPJam

The page offers a practical guide to building software agents that can discover, use, and trust tools, with early access to a report from MCPJam.

MCP server testing validates protocol, tool schemas, agent behavior, OAuth, and cross-client compatibility before production. The full workflow and a checklist.

Debug MCP servers locally: read every JSON-RPC call, step through OAuth, run a real model, and reproduce any failure. An open-source MCP Inspector alternative.

Evaluate MCP servers with a real model: generate a suite, score accuracy, latency, tokens, and tool calls, and diagnose failures. Open source, local or CI.

Compare the 5 best MCP testing tools for 2026, including MCPJam, MCP Inspector, Postman, FastMCP, and Promptfoo for security, CI, and reliability.

OpenAI’s Plugin Extensions enable sidebar apps, conversation panels, file viewers, composer mentions, and rich forms within ChatGPT, extending functionality from MCP Apps.

The page explains how to build a secure, production-ready MCP server in TypeScript using the v2 SDK, including tools, resources, and prompts.

The page provides insights, tutorials, and best practices for building and testing Model Context Protocol (MCP) servers, based on contributions from the MCPJam team and community.

The page compares MCPJam plans—Free, Pro, Team, and Enterprise—including billing intervals, usage, and features, with a pricing calculator for estimates.

The page details ChatGPT’s support for MCP, including app rendering, tool-result images, and display modes, and how to test MCP servers against it using MCPJam.

Honest side-by-side comparisons: MCPJam Inspector vs the official MCP Inspector, MCP evals vs agent evals, and more — with hands-on testing and review dates.

The page outlines Copilot’s support for MCP, including app rendering, tool-result images, and display modes, and how to test MCP servers against it using MCPJam.

Honest side-by-side of MCPJam Inspector and the official MCP Inspector: protocol validation, OAuth debugging, tracing, evals, and when to use each. Tested hands-on.

The page invites developers to ask questions about MCP server setup, testing, or MCPJam evaluations, offering contact via a form or email.

Find answers, guides, and troubleshooting tips.

The page demonstrates MCPJam’s Playground, Swarms, and Evals with a demo MCP server, showing integrations with ChatGPT, Claude, and Cursor.

Test, debug, and evaluate MCP servers with MCPJam. OAuth flow testing, LLM-powered evals, and CI/CD integration — open-source and runs locally.

Privacy Policy for MCPJam services.

Terms of Use for MCPJam services.

MCPJam enables an agent to aggregate data from multiple accounts of the same application via a single MCP server. The system uses **ChatGPT’s link_id** to route tool calls to the correct account. Developers can test this functionality directly in MCPJam’s sandbox environment.

Sep 2026MCPJamNews article

MCPJam debuts on Product Hunt alongside its largest platform upgrades to date. The tool, designed for developers, introduces new features aimed at improving workflow efficiency. The launch highlights a significant expansion of its core functionality, reflecting ongoing efforts to enhance user experience.

Sep 2026mcpjam.substack.comNews article

MCP introduces a platform enabling developers to test user success with ChatGPT, Claude, and Copilot on their local MCP servers. The solution supports evaluation through Swarms, User Testing, and automated CI/CD pipelines. Access is available via desktop app, command-line interface (CLI), or software development kit (SDK).

Sep 2026MCPJamNews article

MCPJam integrates **Skills over MCP**, allowing users to test tools and workflow instructions from an MCP server in a single environment. The platform consolidates access to multiple MCP functionalities for streamlined experimentation. Developers can evaluate different MCP-based solutions without switching between systems.

Aug 2026MCPJamNews article