Claude Code mod
ostrakon
Capture thoughts mid-work, triage them across projects and machines, and turn them into prompts
Install
/plugin marketplace add gaius-codius/ostrakon
/plugin install ostrakon@ostrakonMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- Unknown
- Sees
- /"^mcp__ostrakon__jot$"/ calls, /"^mcp__ostrakon__notes$"/ calls, /"^mcp__ostrakon__archive$"/ calls, every prompt
- Draws in
PromptHintAbovePromptPane- Hooks
session.startsession.endconfig.settool.callcommand.runprompt.editui.renderprompt.submitsession.appendprompt.changeturn.startturn.completeui.closeui.focus
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- gaius-codius/ostrakon
- Folder
plugin- Marketplace
ostrakon- Author
- gaius-codius
- License
- MIT
- Last updated
- 25 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is ostrakon?
Capture thoughts mid-work, triage them across projects and machines, and turn them into prompts It is a mod for Claude Code, from gaius-codius/ostrakon on GitHub.
What can the ostrakon mod access?
Its reach could not be worked out from its code. It sees /"^mcp__ostrakon__jot$"/ calls, /"^mcp__ostrakon__notes$"/ calls, /"^mcp__ostrakon__archive$"/ calls, every prompt. It draws in PromptHint, AbovePrompt, Pane. Like any mod, it runs with your permissions.
How do I install ostrakon?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add gaius-codius/ostrakon and then /plugin install ostrakon@ostrakon.
Is ostrakon popular?
gaius-codius/ostrakon has 3 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 25 October 2026.
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