Claude Code mod

astrolabe

Spec Kit progress and usage governance for Claude Code: a phase rail above the prompt, the next command in the prompt hint, the current task on the spinner, a /astrolabe pane, toasts, update buttons, and a status entry with your usage window.

1 starsContext & usage mods Plugin marketplaceValidates on Claude Code 2.1.316 Source

Install

Inside Claude Code
/plugin marketplace add jonyfs/astrolabe
/plugin install astrolabe@astrolabe

Mods install like plugins. Run /reload-plugins or start a new session to load it.

What it can access

Reach
Unknown
Sees
every prompt, Skill calls, every tool call, Bash calls, Agent calls, TodoWrite calls, Read calls, Edit calls, Write calls, NotebookEdit calls
Draws in
PaneCommandOutputToolUseAbovePromptPromptHintTurnDurationSpinner
Hooks
prompt.submitturn.stepprompt.composesession.startturn.completetool.callsession.measureui.closeui.rendercommand.runui.messageui.scrollui.input

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.
Claude Code docs

Details

Folder
.
Marketplace
astrolabe
Author
Jony Santos
License
MIT
Last updated
13 October 2026

FAQ

What is astrolabe?

Spec Kit progress and usage governance for Claude Code: a phase rail above the prompt, the next command in the prompt hint, the current task on the spinner, a /astrolabe pane, toasts, update buttons, and a status entry with your usage window. It is a mod for Claude Code, from jonyfs/astrolabe on GitHub.

What can the astrolabe mod access?

Its reach could not be worked out from its code. It sees every prompt, Skill calls, every tool call, Bash calls, Agent calls, TodoWrite calls, Read calls, Edit calls, Write calls, NotebookEdit calls. It draws in Pane, CommandOutput, ToolUse, AbovePrompt, PromptHint, TurnDuration, Spinner. Like any mod, it runs with your permissions.

How do I install astrolabe?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add jonyfs/astrolabe and then /plugin install astrolabe@astrolabe.

Is astrolabe popular?

jonyfs/astrolabe has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 13 October 2026.

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