Archon is a workflow engine for AI coding agents that turns development processes into YAML-defined sequences with phases, validation gates, and artifacts. Developers use it to run repeatable processes such as planning, implementation, testing, code review, and pull-request creation across projects. The catalogue entries provide commands, agents, skills, hooks, instructions, and settings for working with Archon.
Borrowing it
Nothing to install: this file belongs to coleam00/Archon. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/coleam00/Archon/dev/.claude/commands/prime-isolation.mdgit clone --depth 1 https://github.com/coleam00/ArchonWrote 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.
[](https://agentmods.dev/commands/coleam00/archon/prime-isolation)<a href="https://agentmods.dev/commands/coleam00/archon/prime-isolation"><img src="https://agentmods.dev/badge/commands/coleam00/archon/prime-isolation/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.
<a href="https://agentmods.dev/commands/coleam00/archon/prime-isolation"><img src="https://agentmods.dev/badge/commands/coleam00/archon/prime-isolation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00011 | $0.00919 |
| Opus 5.5 | $0.00004 | $0.00368 |
| Sonnet 5.5 | $0.00002 | $0.00184 |
| Haiku 4.5 | $0.00001 | $0.00092 |
Grade A, and why
prime-isolation 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 6d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- prime-isolation — 100% identical, 8 lines differ
How it starts
The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prime Isolation: Worktree Isolation and Git Ops Orientation
Objective
Orient on the isolation system (packages/isolation/) and low-level git operations
(packages/git/) before working on worktree lifecycle, branch management, or error handling.
Process
1. Understand the Package Structures
!ls packages/isolation/src/
!ls packages/git/src/
2. Understand Branded Git Types
Read packages/git/src/types.ts in full — branded types (RepoPath, BranchName,
WorktreePath) that prevent mix-ups between plain strings and typed git paths.
3. Understand Low-Level Git Operations
Read packages/git/src/worktree.ts first 60 lines — createWorktree, removeWorktree,
listWorktrees, worktreeExists, toWorktreePath (hashing strategy for unique paths).
Read packages/git/src/exec.ts — execFileAsync and mkdirAsync wrappers. Note:
always use execFileAsync (not exec) for git commands to avoid shell injection.
Read packages/git/src/branch.ts first 40 lines — checkout, getDefaultBranch,
isBranchMerged, findWorktreeByBranch.
4. Understand the Isolation Resolver
Read packages/isolation/src/resolver.ts first 130 lines — IsolationResolver class with
the 7-step resolution order:
- Existing environment reference (from conversation)
- No codebase → skip isolation
- Workflow reuse (same codebase + workflow identity)
- Linked issue sharing (cross-conversation)
- PR branch adoption (skill symbiosis)
- Limit check with auto-cleanup (default: 25 worktrees per codebase)
- Create new worktree
5. Understand Error Classification
Read packages/isolation/src/errors.ts in full — failures carry a typed kind set where they
are thrown, and classifyIsolationError() maps that kind (permission denied, no space, timeout,
not a git repo, Docker unreachable, ...) to a user-friendly message. isKnownIsolationError
blocks typed kinds; unclassified failures crash with their evidence. IsolationBlockedError
for limit-exceeded cases.
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.
- 6d ago Changed · +2 lines 4d1104d08488
- 1mo ago First seen · 106 lines · 11 tokens per session scan A 36f7d9777357
prime-isolation is a command published in the GitHub repository coleam00/Archon (23,752 stars, last pushed today), licensed MIT. It adds 11 tokens to every session and 919 once invoked, about $0.0000 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 2026-08-30.
Other commands, from other repositories
fix-issues
Diagnose, reproduce, then fix reproducible open GitHub issues in parallel: one clean worktree/issue; symlink build artifacts to avoid rebuilds.
review-prs
Parallel PR triage: decide merge-worthiness, prepare rebased worktrees, fix blockers, return them for human merge.
release
Release all packages at specified version.
triage
Classify/label newly opened GitHub issues missing labels.
cleanup
Autonomous cleanup-loop iteration: discover ONE target → complete execution → verify → report. Runs stateless: derive from current tree; assume prior runs left it consistent.
hatch3r-pr-resolve
Read open PR comments, evaluate each against current code via the rigor contract, implement accepted findings, reply inline. Multi-platform.