ccc-fork

ccc-fork is a command for Claude Code from KevinZai/commander. It costs 46 tokens per session (1,466 once invoked), scanned A, original, MIT.

A session-branching workflow for trying separate implementation approaches in isolated Git branches. You can compare the branches and merge or discard one.

In plain words
What is it for?
Use it to fork a coding session, run parallel experiments, list active forks, and merge or discard results.
Why use it?
It lets you explore alternatives without changing the main session's work.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: names the AskUserQuestion tool.

Good fit Use it to fork a coding session, run parallel experiments, list active forks, and merge or discard results.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/kevinzai/commander/ccc-fork
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/KevinZai/commander

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ccc-fork

README.md
[![agentmods](https://agentmods.dev/badge/commands/kevinzai/commander/ccc-fork/github.svg)](https://agentmods.dev/commands/kevinzai/commander/ccc-fork)
Your own site
<a href="https://agentmods.dev/commands/kevinzai/commander/ccc-fork"><img src="https://agentmods.dev/badge/commands/kevinzai/commander/ccc-fork/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ccc-fork

Your own site · 80×15
<a href="https://agentmods.dev/commands/kevinzai/commander/ccc-fork"><img src="https://agentmods.dev/badge/commands/kevinzai/commander/ccc-fork.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,466 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00046 $0.01466
Opus 5.5 $0.00018 $0.00586
Sonnet 5.5 $0.00009 $0.00293
Haiku 4.5 $0.00005 $0.00147

Measured 5d ago against content hash 9fb689c5b084, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ccc-fork scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/ccc-fork.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/ccc-fork — explore approaches in parallel

CC Commander · /ccc-fork · isolated forks per approach, a measured comparison, and one clean merge.

Each fork is a branch explore/<id> checked out in its own worktree at ../<repo>-<id>, created from the current commit. The main checkout is never modified until you merge.

Arguments

$ARGUMENTS:

  • "<description>" or empty — create a fork (empty: ask for a short description in plain text)
  • list — show active forks
  • compare — measured comparison of active forks
  • merge <id> — merge a fork into the branch you started from
  • discard <id> — remove a fork's worktree and branch

What happens

Create

  1. Run git status --porcelain. If the tree is dirty, ask whether to commit first or fork from HEAD without the uncommitted changes; forks never carry uncommitted work.

  2. Count active forks with git branch --list 'explore/*'. At five, stop and ask the user to merge or discard one first.

  3. Set <id> to fork- plus six random hex characters, <base> to git rev-parse --abbrev-ref HEAD, and <repo> to the basename of git rev-parse --show-toplevel.

  4. Create and label the fork:

    git worktree add "../<repo>-<id>" -b "explore/<id>"
    git config "branch.explore/<id>.description" "<description>"
    git config "branch.explore/<id>.forkbase" "<base>"
    
  5. Verify with git -C "../<repo>-<id>" rev-parse --abbrev-ref HEAD (prints explore/<id>), then report the fork id, description, base commit (git rev-parse --short HEAD), branch and worktree path.

  6. Ask how to work the fork with AskUserQuestion (plain-text question where unavailable):

    • 🟢 Work it here — the assistant edits and runs commands only inside ../<repo>-<id> until you say to return.
    • Parallel agent — spawn one Agent per approach with isolation: worktree; each implements, runs the tests, and reports back. The user's selected model is preserved unless they choose another.
    • Separate session — run claude --continue --fork-session in a second terminal to copy this conversation into a new session, then cd ../<repo>-<id> there. This forks the conversation only; the worktree isolates the files.

Read the full file on GitHub · 101 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago Changed · -83 lines · +30 tokens per session 9fb689c5b084
  2. 1mo ago First seen · 184 lines · 16 tokens per session scan A a3f15035bed1

Subscribe to this mod's changes

ccc-fork is a command published in the GitHub repository KevinZai/commander (6 stars, last pushed today), licensed MIT. It adds 46 tokens to every session and 1,466 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.