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Claude Code Mod Development Kits

Mod development kits help you build and inspect Claude Code mods during claude code plugin development. mod-maker finds prompts you repeat and turns them into mods, probe-ui draws interactive UI probes with toasts and panes, and roof-probe logs system prompt sections. Browse all 11.

Install a mod in three steps

  1. Update to Claude Code 2.1.287 or later.
  2. Open a mod below and copy its install command.
  3. Run it in a Claude Code session, then /reload-plugins.

Browse 11 Claude Code mods

lesson-cards

yonatangross 300Reads

Shows lesson hint cards under tool rows when tool calls match known patterns

Install steps Mod building kits

roof-probe

kagamiurayama 30Writes or runs

List Claude Code system prompt sections and reminder types into /tmp/roof-probe-log.json

Install steps Mod building kits

autotel

jagreehal 8Network

Record OpenTelemetry traces of every Claude Code hook and tool call

npm install autotel-claude-code
Logs & telemetry

mod-maker

charlie947 7Writes or runs

Find the prompts you repeat in Claude Code, then build a mod that runs them for you

claude plugin install mod-maker@charlie-free-mods
Mod building kits

probe-ui

ucsandman 24Writes or runs

Draw interactive UI probes in Claude Code with toasts, status, logs and panes

Install steps Mod building kits

mod-events

bendrucker 18Writes or runs

Write per-session JSONL event logs for mods in OpenTelemetry format

/plugin install mod-events --marketplace bendrucker/claude
Logs & telemetry

ruflo-plugin-creator

ruvnet 80.5kWrites or runs

Scaffold, validate and publish Claude Code plugins with the canonical plugin contract

/plugin install ruflo-plugin-creator@ruflo
Mod building kits

probe-runner

KilimcininKorOglu 12Writes or runs

Run live checks of plugins in a fresh Claude Code session in tmux

claude plugin install probe-runner@kilimcininkoroglu-mods
Mod building kits

self-command

KilimcininKorOglu 12Writes or runs

Lets the model run a slash command in its own session and read the output as the next prompt

claude plugin install self-command@kilimcininkoroglu-mods
Mod building kits

first-mod

wickedhardflip 0Draws only

Starter mod: toast on start, status line counts tool calls

Install steps Status lines & HUDs

No screenshot in the README.

Logs & telemetry · Mod building kits

Mod Events

bendrucker/claude · 18 stars · updated 31 Oct 2026

Write per-session JSONL event logs for mods in OpenTelemetry format

Adds `$.modEvents.emit` so other mods can log structured events to per-session JSONL files. Each line is an OpenTelemetry log record with timestamp, severity, event name, attributes, and resource fields that match Claude Code's native OTel events, so a collector can join mod records to session telemetry. Files roll at 64 KB and an otelcol-contrib filelog receiver config is included for ingestion into the observability:session index.

Where you see it
It works in the background, writing log files under ~/.claude/mod-events (or CLAUDE_CONFIG_DIR).
Good for
For mod authors who want their mods' events collected and joined to Claude Code's own telemetry.
Know before you install
  • Other mods must declare a dependency on mod-events and call the emit function; without this plugin enabled, emitted events are dropped.
  • Each event rewrites its file chunk, so a poller may briefly read an empty file before bytes return.
  • Retention deletes the oldest files once the directory passes 500 MB.
What it can access Writes or runs
  • Runs commands or programs
  • Writes files
  • Reads environment variables (these can hold API keys)
  • Draws in the Claude Code interface
From a static scan of the source at commit a4a8f68, not a safety rating. Read the source before you install.

Install

/plugin install mod-events --marketplace bendrucker/claude

Install hint from the scan. Needs Claude Code 2.1.287 or later. Run /reload-plugins after installing.

View source on GitHub