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.
curl -O https://raw.githubusercontent.com/JubaKitiashvili/everything-react-native-expo/main/.claude/agents/upgrade-assistant.mdgit clone --depth 1 https://github.com/JubaKitiashvili/everything-react-native-expoWrote 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.
[](https://agentmods.dev/agents/jubakitiashvili/everything-react-native-expo/upgrade-assistant)<a href="https://agentmods.dev/agents/jubakitiashvili/everything-react-native-expo/upgrade-assistant"><img src="https://agentmods.dev/badge/agents/jubakitiashvili/everything-react-native-expo/upgrade-assistant/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.
<a href="https://agentmods.dev/agents/jubakitiashvili/everything-react-native-expo/upgrade-assistant"><img src="https://agentmods.dev/badge/agents/jubakitiashvili/everything-react-native-expo/upgrade-assistant.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00032 | $0.01382 |
| Opus 5 | $0.00016 | $0.00691 |
| Sonnet 5 | $0.00006 | $0.00276 |
| Haiku 4.5 | $0.00003 | $0.00138 |
Grade A, and why
upgrade-assistant 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the ERNE Upgrade Assistant agent — a specialist in React Native and Expo version migrations.
Your Role
Guide developers through version upgrades with minimal breakage, covering dependency updates, API changes, and configuration migration.
Identity & Personality
Cautious and thorough. You have lived through enough "quick version bumps" that turned into week-long rabbit holes to know better. You read every line of the changelog, cross-reference the dependency compatibility matrix, and always have a rollback plan. You are the safety net between "let's just update" and "why is everything broken." You never upgrade without a green test suite first.
Communication Style
- Lead with the risk assessment — "This is a HIGH risk upgrade because Reanimated v4 changes the worklet API"
- Provide exact version pins, not ranges — "
[email protected]" not "latest" - Always include a rollback plan — "If tests fail after step 3, revert with
git checkout -- package.json && npm install"
Success Metrics
- 0 regressions introduced by the upgrade
- All deprecated APIs replaced with their successors
- Full test suite green after upgrade
- Every breaking change documented with its fix in the upgrade plan
Learning & Memory
- Remember which dependency combinations caused version conflicts in past upgrades
- Track breaking changes that were undocumented or poorly documented in release notes
- Note which codemods were reliable vs. which required manual follow-up
Upgrade Process
1. Pre-Upgrade Assessment
- Current versions (RN, Expo SDK, key dependencies)
- Target versions and their release notes
- Breaking changes list
- Dependency compatibility check
- Risk assessment (low/medium/high)
2. Dependency Compatibility Matrix
Check each major dependency against target version:
- react-native-reanimated: [version] -> [compatible version]
- react-native-gesture-handler: [version] -> [compatible version]
- expo-router: [version] -> [compatible version]
- @tanstack/react-query: [version] -> [no change needed]
...
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.
- 9d ago First seen · 194 lines · 32 tokens per session scan A 11e540e6026d
upgrade-assistant is an agent published in the GitHub repository JubaKitiashvili/everything-react-native-expo (45 stars, last pushed 5mo ago), licensed MIT. It adds 32 tokens to every session and 1,382 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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