Claude Code mod

ciel-mode

ciel-mode (Call-in-CEL mode) for Claude Code: the model writes a small sandboxed CEL program that calls MCP and read-only tools, filters and joins their results, and returns only what it needs, so large tool outputs never fill the context. Every call still goes through the permission checks.

1 starsWorkflow modsValidates on Claude Code 2.1.316 Source

Install

From source

git clone https://github.com/ruihe774/cc-ciel-mode.git
claude --plugin-dir ./cc-ciel-mode/.

The repo has no marketplace file, so load the plugin folder directly with --plugin-dir.

What it can access

Reach: L2Writes or runs: drives Claude, reads files, reads env vars, draws
Sees: mcp__ciel-mode__run calls, mcp__ciel-mode__tools calls, /"^mcp__"/ calls
Hooks: session.startsession.endtool.calltool.checkcommand.run

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: ruihe774/cc-ciel-mode
Folder: .
Author: Rui He
Type: Workflow mods
License: Unlicense
Last updated: 9 October 2026
Listed in: awesome-claude-code-mods

FAQ

What is ciel-mode?

What can the ciel-mode mod access?

Its widest reach is "writes or runs" (drives Claude, reads files, reads env vars, draws). It sees mcp__ciel-mode__run calls, mcp__ciel-mode__tools calls, /"^mcp__"/ calls. Like any mod, it runs with your permissions.

How do I install ciel-mode?

Clone ruihe774/cc-ciel-mode and start Claude Code with --plugin-dir pointing at the mod's folder (.).

Is ciel-mode popular?

ruihe774/cc-ciel-mode has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 9 October 2026.

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