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MCP-Fiddle
Browser-based debugging and inspection tool for Model Context Protocol (MCP) servers — like Postman, but for MCP. Connect via stdio or SSE, send requests, and inspect JSON-RPC responses in real time.
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TypeScript
debugging-tooldeveloper-toolsdockerjson-rpcmcpmodel-context-protocolreactssetypescriptvite
Quality signals
ActiveNo testsNo CIThin docsNo licenseNew
InstallMCPRun via npx (Node)
Universal installANY TOOL
$ npx skillcity@latest pkemkes/MCP-FiddleAuto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor, Cline, OpenCode, Gemini CLI, Anti-Gravity, OpenClaw and Hermes.
Requires Node.js 18+ (ships with npx).
Or install manually
npx -y mcp-fiddle
MCP Configuration
Add this to your claude_desktop_config.json
{
"mcpServers": {
"mcp-fiddle": {
"command": "npx",
"args": [
"-y",
"mcp-fiddle"
]
}
}
}Loading README…
Ask a simulated agent to run this skill. It loads the real SKILL.md and reasons over your task with NVIDIA.
mcp-fiddle — sandboxAI sandbox
Pick a quick prompt below or type your own — watch the agent execute this skill step by step.
guest@skillcity:~$Try a prompt