Open-source Moka offers local UI to inspect MCP JSON-RPC traffic, latency and tool calls

mokalabshq · reddit · 2026-10-03

Developer mokalabshq released Moka, an open-source local UI for debugging MCP-based agents. The author argues most agent bugs come from broken tool schemas, silent 40s timeouts, and unhandled errors—not the LLM itself.

Moka shows raw MCP JSON-RPC traffic, token counts, and tool call waterfalls side-by-side with your chat, and exports directly to LangGraph. Run locally with npx @mokalabs/sandbox.

Related event: Open-Source Moka Inspect Visualizes MCP Traffic and Tool Latency(2 posts)→

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