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capacitor-offline-first SKILL.md skillA

capacitor-offline-first from cap-go/capgo-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add cap-go/capgo-skills/capacitor-offline-first@git:20261011.86834d4

Pins git:20261011.86834d4 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: cap-go/capgo-skills
Path: plugins/capacitor-features/skills/capacitor-offline-first/SKILL.md
Versions recorded: 2
Latest version: git:20261011.86834d4, committed Oct 11, 2026
First version recorded: May 1, 2026
Size: 8,513 bytes
Repository stars: 74
License: MIT

Designs and implements offline-first data in Capacitor apps - local SQLite source of truth with @capgo/capacitor-fast-sql (`FastSQL.connect`, `KeyValueStore`), an outbox/sync queue, delta pulls, conflict resolution, @capacitor/network `networkStatusChange`, background sync with @capgo/capacitor-background-task, and why localStorage/IndexedDB get evicted and service workers break plugin injection in native WebViews. Use when the app must work without internet, data disappears after iOS storage…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Offline-First Capacitor Apps

## When to Use

TRIGGER when:
- The app must read and write while offline and sync later
- Choosing local storage (Preferences vs SQLite vs IndexedDB) for user data
- Writes are duplicated, lost, or overwritten during sync
- Cached data vanishes on iOS after low-storage events
- A service worker was added and native plugins stopped working (`Plugin not implemented`)

Do not use:
- Replacing `@capacitor-community/sqlite` / Ionic secure storage: `sqlite-to-fast-sql`
- Getting new web code to devices (OTA): `capgo-live-updates`
- Encryption key storage, SSL pinning: `capacitor-security`
- Query speed / bridge overhead tuning: `capacitor-performance`

## Decisions (make these before writing code)

| Question | Default answer |
|----------|----------------|
| Where does UI read from? | Local DB only. Network writes into the DB; UI observes the DB. |
| Storage for records | SQLite via `@capgo/capacitor-fast-sql` |
| Storage for small settings / tokens | `@capacitor/preferences` (not for secrets; see `capacitor-security`) |
| localStorage / IndexedDB | Transient only: iOS can evict WebView storage under pressure |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add cap-go/capgo-skills/capacitor-offline-first@sha256:08e62c593e61ab8a

The line at the top of this page pins the label git:20261011.86834d4, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_b4idmvkwrt5q7al7.svg)](https://markdownregistry.com/a/art_b4idmvkwrt5q7al7)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between May 1, 2026 and Oct 11, 2026, about one every 163 days.

version	committed	commit	size	audit
git:20261011.86834d4 latest	2026-10-11	86834d4	8,513 B	A	view · diff
git:20260501.ed3e92e	2026-05-01	ed3e92e	13,991 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (8513 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

cap-go/capgo-skills · 74 stars · license MIT · pushed 2026-10-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_b4idmvkwrt5q7al7
GET https://markdownregistry.com/api/v1/resolve?ref=cap-go/capgo-skills/capacitor-offline-first
GET https://markdownregistry.com/api/v1/blob/08e62c593e61ab8a90178a27176504db55ac0f3f4c64b749ce1acc19464fd9b2

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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