MCPJam is the first testing & evaluations platform for MCP servers. Over 106,000 developers and +300 enterprises use MCPJam to see how their servers behave in apps like ChatGPT and Claude, improve experiences for users in AI-native chat interfaces, and build continuous reliability into every deployment.
Headquartered in San Francisco, MCPJam aims to help developers build better MCP servers.
MCPJam launches
Launch date
MCPJam InspectorTest + develop ChatGPT apps and MCP apps (ext-apps) locally
Launched on January 20th, 2026