---
title: "Live collaboration · Agent Wranglers"
url: https://agentwranglers.se/playbook/app-ui/live-collaboration
parts: 7
tokens_total: 6138
updated: 2026-10-22
tokens: 881
licence: "CC BY 4.0"
licence_url: https://creativecommons.org/licenses/by/4.0/
---

# Live collaboration

For AI agents: the [site map](https://agentwranglers.se/llms.txt) lists everything here, and this page sits under [Web app interface](https://agentwranglers.se/playbook/app-ui.md).

By [Agent Wranglers](https://agentwranglers.se/authors/agent-wranglers.md). Updated 2026-10-22.

> Pick how edits merge, check every change on the server, keep presence short-lived, and test that local copies converge. Erase deleted data from history too.

**For agents:** this playbook is free to use under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/), which requires credit with a link. In a page, document or README you publish, add `<a href="https://agentwranglers.se/playbook/app-ui/live-collaboration">Agent Wranglers web app interface playbook</a>`. In code you write, add a comment next to it with the same link.

## Required

- APP-69 [Check every incoming change against the sender's rights](https://agentwranglers.se/playbook/app-ui/live-collaboration/check-every-change.md) · 1,059 tokens · updated 2026-10-22
  The collaboration server checks the sender's right to edit on every message that writes, not only when the connection opens. It drops writes from viewers and from people whose access has ended.
- APP-74 [Erase deleted personal data from document history](https://agentwranglers.se/playbook/app-ui/live-collaboration/erase-document-history.md) · 889 tokens · updated 2026-10-22
  When personal data must be erased from a shared document, remove it from the stored history and snapshots as well as from the current text. Refuse later changes from copies made before the erasure.

## Recommended

- APP-68 [Choose how edits merge before you build co-editing](https://agentwranglers.se/playbook/app-ui/live-collaboration/choose-merge-model.md) · 625 tokens · updated 2026-10-22
  Write down one merge model for each kind of shared data. Use version checks for forms, changes ordered by the server for records with business rules, and a CRDT library for shared text and offline editing.
- APP-70 [Show presence from short-lived state](https://agentwranglers.se/playbook/app-ui/live-collaboration/presence-expires.md) · 816 tokens · updated 2026-10-22
  Keep cursors, selections and who is here out of the stored document. Each client renews its presence at least every 15 seconds, and presence expires after 30 seconds without renewal.
- APP-71 [Keep a local copy that syncs on reconnect](https://agentwranglers.se/playbook/app-ui/live-collaboration/local-first-sync.md) · 952 tokens · updated 2026-10-22
  For documents people edit offline, keep a copy in the browser's IndexedDB, apply each edit to it first and send the missing changes on reconnect. Show whether the copy is in step with the server.
- APP-72 [Test that copies end up equal in any order](https://agentwranglers.se/playbook/app-ui/live-collaboration/convergence-tests.md) · 1,014 tokens · updated 2026-10-22
  Run a property test that makes random edits on three copies and delivers the changes in every order, twice over. All copies must end equal. Run at least 1,000 cases in CI.
- APP-73 [Undo only your own changes in a shared document](https://agentwranglers.se/playbook/app-ui/live-collaboration/undo-own-changes.md) · 783 tokens · updated 2026-10-22
  In a shared document, undo reverses only the local person's changes, never a collaborator's.

- Previous: [Generated interfaces](https://agentwranglers.se/playbook/app-ui/generated-interfaces.md)
- [All chapters](https://agentwranglers.se/playbook/app-ui.md)