Claude Code mod

catalyst-probes

Consultation and prompt engine for Claude Mods. The module is the core; [probe.<id>] tables in probes.toml are the consultants and [prompt.<id>] tables author a system-prompt section, a tool description or a command description. The only carrier is the mod: a CLAUDE_*_CARRIER handle set to mod or left empty/unset arms the probe here; any other value loudly refuses the calls this probe acts on (the patch-side copy is gone).

3 starsWorkflow mods Plugin marketplace Source

Install

Inside Claude Code
/plugin marketplace add TransmuteLabs/Catalyst
/plugin install catalyst-probes@catalyst

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

What it can access

Reach
L2Writes or runs: runs processes, writes files, drives Claude, reads files, reads env vars, reads the transcript, persists state, draws
Sees
the system prompt, every tool call, classic hooks, subagent spawns
Hooks
session.startsession.endcommand.runprompt.sectiontool.describecommand.describetool.callclassic.ConfigChangeclassic.CwdChangedclassic.DirectoryAddedclassic.Elicitationclassic.ElicitationResultclassic.FileChangedclassic.InstructionsLoadedclassic.Notificationclassic.PermissionDeniedclassic.PermissionRequestclassic.PostCompactclassic.PostModelSwitchclassic.PostToolBatchclassic.PostToolUseFailureclassic.PreCompactclassic.PreModelSwitchclassic.SessionEndclassic.SessionStartclassic.Setupclassic.StopFailureclassic.Stopclassic.SubagentStartclassic.SubagentStopclassic.TaskCompletedclassic.TaskCreatedclassic.TeammateIdleclassic.UserPromptExpansionclassic.UserPromptSubmitclassic.WorktreeCreateclassic.WorktreeRemoveagent.spawnturn.step

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

Repository
TransmuteLabs/Catalyst
Folder
plugins/catalyst-probes
Marketplace
catalyst
Author
Marat Karimov
Type
Workflow mods
License
NOASSERTION
Last updated
6 October 2026
Listed in
awesome-claude-code-mods

FAQ

What is catalyst-probes?

Consultation and prompt engine for Claude Mods. The module is the core; [probe.<id>] tables in probes.toml are the consultants and [prompt.<id>] tables author a system-prompt section, a tool description or a command description. The only carrier is the mod: a CLAUDE_*_CARRIER handle set to mod or left empty/unset arms the probe here; any other value loudly refuses the calls this probe acts on (the patch-side copy is gone). It is a mod for Claude Code, from TransmuteLabs/Catalyst on GitHub.

What can the catalyst-probes mod access?

Its widest reach is "writes or runs" (runs processes, writes files, drives Claude, reads files, reads env vars, reads the transcript, persists state, draws). It sees the system prompt, every tool call, classic hooks, subagent spawns. Like any mod, it runs with your permissions.

How do I install catalyst-probes?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add TransmuteLabs/Catalyst and then /plugin install catalyst-probes@catalyst.

Is catalyst-probes popular?

TransmuteLabs/Catalyst has 3 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 6 October 2026.

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