Understand what changed between two JSON files. JSON Change Lens compares configuration snapshots and API responses, ignores object-key order, distinguishes type changes, and preserves decimal precision. Match arrays of objects by a unique ID field to avoid reorder noise, ignore explicitly selected timestamp keys, and generate Markdown or JSON reports with paths into both original files. The helper reads two selected files and makes no network requests; reports are written only to a new output path when requested. Requires Python 3.9+ and a terminal or code execution environment. Host chat and execution-environment data handling still applies. It does not apply patches or determine API compatibility without a supplied contract. Independent community software.
Install
- 1Add it in ChatGPT
Open Plugins in the ChatGPT sidebar (web or desktop), search for “JSON Change Lens” and select +. You'll be asked to sign in to any connected service on first use. Then type @ in a chat to call it.
Skills 1
- JSON Change Lens
Explain meaningful changes between JSON files
Things to ask
- “Compare these two JSON files and explain the changes.”
- “Compare these API snapshots, matching object arrays by id.”
- “Compare these configs and ignore updated_at at every depth.”
Disconnect or uninstall
- 1In ChatGPT
Disconnect an account in Settings → Apps or Plugins. To remove the plugin itself, open JSON Change Lens in the Plugin Directory and select Uninstall plugin. Uninstalling can disconnect every account connected through it, and plugins your workspace installs may not offer the option.
- 2In Codex
Run /plugins in the Codex CLI, select the plugin and uninstall it, or press Space to turn it off.
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