Inspector
Local development client for ChatGPT apps and MCP servers with full widget emulator, OAuth debugger, LLM playground with free frontier models (GPT-5, Claude Sonnet, Gemini 2.5), JSON-RPC observability, and Apps Builder supporting Desktop/Tablet/Mobile views via NPX or desktop apps.
⭐ 1,481MCPJam
mcpmodelcontextprotocolmcp-clientsmcp-tools