MCPJam is the development platform for MCP servers, MCP apps, and ChatGPT apps. Debug every JSON-RPC message and OAuth exchange, run evaluations across multiple LLMs, and track accuracy over time. Catch regressions early, improve your server with every iteration, and ship with confidence.Documentation Index
Fetch the complete documentation index at: https://mcpjam-mintlify-docs-update-pr-1995-1777694378328.mintlify.app/llms.txt
Use this file to discover all available pages before exploring further.
Quick Start
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Key features
| Capability | Description |
|---|---|
| App Builder | Debug your server against a model: tool calls or in-panel chat, with Chat, Trace, and Raw. OpenAI Apps SDK and MCP app UIs, text tools, Chrome DevTools-style widget emulator. Read more |
| Chat | Multi-server chat on frontier models (free). Chat, Trace, Raw; compare up to 3 models. Read more |
| OAuth Debugger | Guided MCP OAuth conformance checks: protocol versions 03-26, 06-18, 11-25; DCR, client pre-registration, CIMD. Read more |
| MCP Server Debugging | Manually run tools, resources, templates, and elicitation; full JSON-RPC logs. |
| Skills | Skills in Chat and App Builder; local filesystem only. Read more |
| Workspaces | Shared server groups with real-time team sync. Read more |
| Evals | Test cases with expected tool calls, run across LLMs, metrics. Read more |
| CLI | Run MCPJam checks, probes, and evals from the terminal. Perfect for local dev loops and CI. Read more |
| SDK | Programmatic access to MCPJam for custom tooling, scripting, and integrations. Read more |
| CI/CD | Run MCPJam checks and evals in GitHub Actions and other CI systems to gate PRs on regressions. Read more |