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MCP-Fiddle MCP server · F · ToolBench

MCP-Fiddle

An Electron-based desktop application for testing and debugging MCP (Model Context Protocol) servers. Provides a UI for connecting to MCP servers via stdio, SSE, or Streamable HTTP transports, discovering server capabilities, and interactively calling tools, resources, and prompts.

<=2025-11-25STREAMABLE_HTTP0 tools

16/100

Definition Quality0

Protocol Readiness0

Supportability26

Spec posture

Inferred effective spec <=2025-11-25·current baseline 2026-07-28

Static source inference · medium confidence · detected: Sampling, Logging

Deprecated protocol patterns detected

Summary

Scoring was not performed

Score history

Overall score trend

↑ 16 points across a rubric change (v1 → v2)

16/100

Scored	Grade	Overall	Spec posture	Rubric
2026-09-22	F	16	<=2025-11-25	v2
2026-03-09	F	0	-	v1