Add Expo Secure Store Keystore

Community

khadinakbarlabs

add-expo-secure-store-keystore

Add expo-secure-store backed by Android Keystore for storing auth tokens and secrets. Use when the user says 'secure store android', 'keystore android', 'store token secure'.

Overview

Publisher	khadinakbarlabs
Repository	`expo-mobile-app-builder`
Skill name	`add-expo-secure-store-keystore`
Stars	3
Forks	0
Bundled files	1
License	MIT
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
1 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by khadinakbarlabs on GitHub. Read the source before you install it.

Installation

Install the Add Expo Secure Store Keystore AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/khadinakbarlabs/expo-mobile-app-builder/tree/main/skills/add-expo-secure-store-keystore
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/khadinakbarlabs/expo-mobile-app-builder/tree/main/skills/add-expo-secure-store-keystore

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/khadinakbarlabs/expo-mobile-app-builder.git /tmp/expo-mobile-app-builder
mkdir -p .claude/skills
cp -r /tmp/expo-mobile-app-builder/skills/add-expo-secure-store-keystore .claude/skills/add-expo-secure-store-keystore

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Add Expo Secure Store Keystore in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Add Expo Secure Store Keystore on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Add Expo Secure Store Keystore is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Add Expo Secure Store (Android Keystore)

Hardware-backed encrypted key-value store. Uses Android Keystore on Android.

Install

bash
npm exec --no -- expo install expo-secure-store

Basic use

tsx
import * as SecureStore from 'expo-secure-store';

await SecureStore.setItemAsync('auth_token', 'jwt...');
const token = await SecureStore.getItemAsync('auth_token');
await SecureStore.deleteItemAsync('auth_token');

Android-specific options

tsx
// Require biometric or PIN to access (Android 6+)
await SecureStore.setItemAsync('sensitive', 'value', {
  requireAuthentication: true,
  authenticationPrompt: 'Verify to unlock',
});

What it uses under the hood

Android: EncryptedSharedPreferences + Android Keystore (hardware-backed on TEE/StrongBox devices)
Each key encrypted with hardware-derived key
Survives app data clear (but NOT uninstall)

When NOT to use SecureStore

Large data (use SQLite encrypted instead)
Frequently-read values (slow ~5-10ms per read)
Data that should survive uninstall (use cloud sync)

When to use

Auth tokens (access, refresh)
API keys for the user's session
Encryption keys for local SQLite
Sensitive user inputs (PIN, recovery phrase)

Gotcha: rooted devices

SecureStore relies on Android Keystore. On rooted devices, Keystore can be bypassed. For high-value apps, also implement:

add-app-attestation (Play Integrity API)
Server-side validation

Pair with

add-supabase-auth-android for token persistence
Use MMKV (add-zustand persistence) for non-sensitive data

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

agents/openai.yaml1 KB

Frequently asked questions

What does the Add Expo Secure Store Keystore AI skill do?

Add expo-secure-store backed by Android Keystore for storing auth tokens and secrets. Use when the user says 'secure store android', 'keystore android', 'store token secure'.

Why use Add Expo Secure Store Keystore on TypingMind?

Because you install it once and use it with any model. Add Expo Secure Store Keystore is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Add Expo Secure Store Keystore in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/khadinakbarlabs/expo-mobile-app-builder/tree/main/skills/add-expo-secure-store-keystore. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Add Expo Secure Store Keystore?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Add Expo Secure Store Keystore?

As many as you like. As long as a model supports skills, you can use Add Expo Secure Store Keystore with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Add Expo Secure Store Keystore AI skill free?

Yes. It is published on GitHub by khadinakbarlabs under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Add Expo Secure Store (Android Keystore)

Install

Basic use

Android-specific options

What it uses under the hood

When NOT to use SecureStore

When to use

Gotcha: rooted devices

Pair with

Bundled files

Frequently asked questions

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