Borrowing it
Nothing to install: this file belongs to zai-org/Synapse. 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/zai-org/Synapse/main/.agents/skills/upgrading-expo/SKILL.mdgit clone --depth 1 https://github.com/zai-org/SynapseWrote 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/skills/zai-org/synapse/upgrading-expo)<a href="https://agentmods.dev/skills/zai-org/synapse/upgrading-expo"><img src="https://agentmods.dev/badge/skills/zai-org/synapse/upgrading-expo/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/skills/zai-org/synapse/upgrading-expo"><img src="https://agentmods.dev/badge/skills/zai-org/synapse/upgrading-expo.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 | $0.00016 | $0.01298 |
| Opus 5.5 | $0.00006 | $0.00519 |
| Sonnet 5.5 | $0.00003 | $0.00260 |
| Haiku 4.5 | $0.00002 | $0.00130 |
Grade C, and why
upgrading-expo scanned grade C with 1 finding 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 1mo 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf node_modules .expo Copies of this mod
6 near-identical copies found in the catalogue:
- upgrading-expo — 100% identical, 0 lines differ
- upgrading-expo — 100% identical, 0 lines differ
- upgrading-expo — 95% identical, 10 lines differ
- upgrading-expo — 94% identical, 7 lines differ
- upgrading-expo — 94% identical, 7 lines differ
- upgrading-expo — 92% identical, 8 lines differ
How it starts
The opening of the file, as written. The whole thing — 134 lines — stays where its author put it; the contents beside it link to each section on GitHub.
References
- ./references/new-architecture.md -- SDK +53: New Architecture migration guide
- ./references/react-19.md -- SDK +54: React 19 changes (useContext → use, Context.Provider → Context, forwardRef removal)
- ./references/react-compiler.md -- SDK +54: React Compiler setup and migration guide
- ./references/native-tabs.md -- SDK +55: Native tabs changes (Icon/Label/Badge now accessed via NativeTabs.Trigger.*)
- ./references/expo-av-to-audio.md -- Migrate audio playback and recording from expo-av to expo-audio
- ./references/expo-av-to-video.md -- Migrate video playback from expo-av to expo-video
Beta/Preview Releases
Beta versions use .preview suffix (e.g., 55.0.0-preview.2), published under @next tag.
Check if latest is beta: https://exp.host/--/api/v2/versions (look for -preview in expoVersion)
npx expo install expo@next --fix # install beta
Step-by-Step Upgrade Process
- Upgrade Expo and dependencies
npx expo install expo@latest
npx expo install --fix
-
Run diagnostics:
npx expo-doctor -
Clear caches and reinstall
npx expo export -p ios --clear
rm -rf node_modules .expo
watchman watch-del-all
Breaking Changes Checklist
- Check for removed APIs in release notes
- Update import paths for moved modules
- Review native module changes requiring prebuild
- Test all camera, audio, and video features
- Verify navigation still works correctly
Prebuild for Native Changes
First check if ios/ and android/ directories exist in the project. If neither directory exists, the project uses Continuous Native Generation (CNG) and native projects are regenerated at build time — skip this section and "Clear caches for bare workflow" entirely.
If upgrading requires native changes:
npx expo prebuild --clean
This regenerates the ios and android directories. Ensure the project is not a bare workflow app before running this command.
Clear caches for bare workflow
These steps only apply when ios/ and/or android/ directories exist in the project:
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 134 lines · 16 tokens per session scan C 373efb08acd4
upgrading-expo is a skill published in the GitHub repository zai-org/Synapse (488 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 16 tokens to every session and 1,298 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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