plugin

lightrun — Claude Code plugin: what it does, how to install

Q: How to install lightrun in Claude Code?

First add the community marketplace by running `/plugin marketplace add anthropics/claude-plugins-community`. Next, install the package using `/plugin install lightrun@claude-community`.

Equips Claude Code with investigation skills for inspecting live applications. It helps diagnose bugs, slow endpoints, and production issues without redeploying code.

Install into Claude Code · Plugin marketplace All methods and platforms ↓

/plugin marketplace add anthropics/claude-plugins-community
/plugin install lightrun@claude-community

Open on GitHub

What lightrun does

The plugin connects Claude Code to live environments through dedicated investigation skills. It includes workflows for tracing runtime failures and finding root causes behind latency spikes. The assistant inspects running processes directly, checking variable states or execution counts. No service redeployments are needed.

Investigations produce structured handoff summaries detailing runtime evidence. Without an accessible Lightrun MCP server and completed OAuth authorization, none of these skills can pull live data. Proper environment access remains mandatory before starting any diagnosis.

What it helps with

debug running applications without restarts or redeploys
pinpoint latency causes and timeouts across slow endpoints
inspect live variable values and hit counts from production
evaluate pull requests alongside actual runtime execution traces

Example prompts for the agent

Use lightrun-live-runtime-debugging to investigate failing requests on production.
Run lightrun-slow-execution-diagnosis on the /checkout route to trace latency.
Ask production using lightrun-ask-prod for current variable states and execution counts.

How to install lightrun

Plugin marketplace

/plugin marketplace add anthropics/claude-plugins-community

/plugin install lightrun@claude-community

Step by step, with commands for each platform: Claude Code plugins: marketplaces, installing, and building your own

Questions about lightrun

How to install lightrun in Claude Code?

First add the community marketplace by running /plugin marketplace add anthropics/claude-plugins-community. Next, install the package using /plugin install lightrun@claude-community.

What does the lightrun plugin do?

It provides skills to investigate runtime errors, measure latency spikes, and read live variables directly from running applications. Debugging proceeds without restarting services.

What prerequisites are needed before using the plugin?

You need access to a configured Lightrun MCP server and finished OAuth authorization in your environment.

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