everything-react-native-expo: Skill for Claude Code

.claude/skills/retrospective/SKILL.md

retrospective is a skill for Claude Code from JubaKitiashvili/everything-react-native-expo. It costs 18 tokens per session (476 once invoked), scanned A, a copy of erne-retrospective, MIT.

A coding-session review command that examines the work completed, including changed files, tests, builds, and development time.

In plain words
What is it for?
Use it to create a session report, review test and build results, find improvement areas, and suggest changes to the coding setup.
Why use it?
It helps you spot quality issues and repeated patterns after a session instead of relying on memory.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths.

This is JubaKitiashvili/everything-react-native-expo's own configuration. It tells Claude Code how to work on everything-react-native-expo itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything everything-react-native-expo configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node .claude/hooks/scripts/evaluate-session.js.

Part of the erne-universal plugin — 45 skills, 12 agents shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to JubaKitiashvili/everything-react-native-expo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/JubaKitiashvili/everything-react-native-expo/main/.claude/skills/retrospective/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/JubaKitiashvili/everything-react-native-expo

Made for: Claude Code.

Or install erne-universal, the plugin that ships this one along with the rest of its 45 skills, 12 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for retrospective

README.md
[![agentmods](https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/retrospective/github.svg)](https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/retrospective)
Your own site
<a href="https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/retrospective"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/retrospective/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for retrospective

Your own site · 80×15
<a href="https://agentmods.dev/skills/jubakitiashvili/everything-react-native-expo/retrospective"><img src="https://agentmods.dev/badge/skills/jubakitiashvili/everything-react-native-expo/retrospective.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 476 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 91% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00018 $0.00476
Opus 5 $0.00009 $0.00238
Sonnet 5 $0.00004 $0.00095
Haiku 4.5 $0.00002 $0.00048

Measured 12d ago against content hash 008a670c33ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

retrospective scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

91% identical to erne-retrospective — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/retrospective/SKILL.md · 71 lines

What it actually says

/retrospective — Session Analysis

You are executing the /retrospective command. This is script-driven — it runs the session evaluation pipeline.

What This Does

Analyzes the completed coding session to evaluate quality, identify improvements, and suggest harness enhancements.

Process

  1. Run the evaluation script:
node .claude/hooks/scripts/evaluate-session.js

This script analyzes:

  • Files created/modified during the session
  • Test results and coverage changes
  • Build success/failure history
  • Hook trigger patterns (which rules fired, which were ignored)
  • Time spent in different phases (planning, coding, testing, debugging)
  1. Generate session report:
## Session Retrospective

### Work Summary
- Files changed: 12
- Tests added: 8
- Tests passing: 47/47
- Build status: Success

### Quality Metrics
- Type safety: 100% (no new `any`)
- Test coverage delta: +3.2%
- Bundle size delta: +8KB

### Patterns Observed
- [GOOD] Consistent use of error boundaries
- [GOOD] All new components have tests
- [IMPROVE] 3 files missing JSDoc on public API
- [IMPROVE] 2 effects missing cleanup

### Harness Feedback
- Rule `common/state-management.md` triggered 5 times → Well calibrated
- Rule `expo/patterns.md` never triggered → May need broader globs
- Hook `lint-staged.cjs` caught 2 issues → Working as intended
- Suggestion: Add rule for consistent error message format

### Recommendations
1. Add error message formatting rule
2. Review expo/patterns.md glob coverage
3. Consider adding pre-commit test hook
  1. Act on recommendations: Review each recommendation and decide whether to implement it now or add to backlog.

When to Use

  • At the end of a significant coding session
  • After completing a feature or milestone
  • When the harness feels miscalibrated (too many or too few rule triggers)
  • Periodically for continuous improvement
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 71 lines · 18 tokens per session scan A 008a670c33ad

Subscribe to this mod's changes

retrospective is a skill published in the GitHub repository JubaKitiashvili/everything-react-native-expo (45 stars, last pushed 5mo ago), licensed MIT. It adds 18 tokens to every session and 476 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to erne-retrospective, differing in 8 lines, and is treated as a copy.

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