# Receipts

> Show your personal model-quality trend card (failure rate, edit churn, tokens/task by model version)

- Skill: `karanb192/receipts` (Agent Skill)
- Install (CLI): `npx skillmds@latest add karanb192/receipts`
- Raw SKILL.md: https://api.skillmd.com/api/skills/karanb192/receipts/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: karanb192 (https://skillmd.com/u/karanb192)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/karanb192/receipts

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# Nerf receipts: your model-quality trend card

!`node "${CLAUDE_SKILL_DIR}/../../nerf-receipts.js" --render 2>/dev/null || node "${CLAUDE_PLUGIN_ROOT}/nerf-receipts.js" --render`

The card above is your own per-session flight recorder, aggregated across your recent
Claude Code sessions and keyed by model id and Claude Code version: failure rate, edit
churn, and tokens per task, each with a sparkline. It is recorded quietly in the background
by the `nerf-receipts` hooks as you work.

Briefly interpret it for the user: call out the headline averages, and if a ⚠ shift line is
present, restate which metric moved, by how much, and across which model change; that is the
receipt that a quality shift is real, not a vibe. If the card says data is still accumulating,
tell them to keep working and check back after a few more sessions. Keep it short and do not
re-run any commands.