embedded-debugger-mcp

Langfuse helps teams instrument LLM applications so they can inspect traces, sessions, retrieval steps, prompts, scores, and evaluations in one place. It also supports prompt versioning, datasets, playground experiments, and integrations with common SDKs and frameworks. You can use the hosted service or self-host with Docker Compose or Kubernetes. Self-hosted instances send basic usage telemetry by default, but it excludes raw traces and can be disabled.

MCP Inspector connects to servers over stdio, SSE, or Streamable HTTP and lets developers inspect tools, resources, prompts, and responses in a browser UI. Its CLI supports scripted checks and continuous integration, and server configurations can be exported for other clients. Because the local proxy can spawn processes and connect to specified servers, it should not be exposed to untrusted networks.

This skill lets Claude create and execute Playwright automation for page tests, multi-step flows, and browser validation instead of relying on fixed scripts. The browser is visible by default, common interactions have helpers, and a universal executor handles module resolution; it can be installed as a Claude Code plugin or standalone skill.

Install NoPUA to steer coding agents through repeated failures with perspective changes, evidence checks, new approaches, and follow-up inspection instead of threats. It encourages agents to state uncertainty honestly, verify completion, and prepare a responsible handoff when a problem remains unresolved. The skill supports several coding assistants and seven languages, although its full rule set may overlap with an existing workflow stack.