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.
npx agentmods add skills/addxai/enterprise-harness-engineering/multi-worktree-devnpx skills add addxai/enterprise-harness-engineering --skill multi-worktree-devgit clone --depth 1 https://github.com/addxai/enterprise-harness-engineeringWrote 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/skills/addxai/enterprise-harness-engineering/multi-worktree-dev)<a href="https://agentmods.dev/skills/addxai/enterprise-harness-engineering/multi-worktree-dev"><img src="https://agentmods.dev/badge/skills/addxai/enterprise-harness-engineering/multi-worktree-dev.svg" alt="Measured on agentmods" 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 | $0.00082 | $0.05983 |
| Opus 5 | $0.00041 | $0.02991 |
| Sonnet 5 | $0.00016 | $0.01197 |
| Haiku 4.5 | $0.00008 | $0.00598 |
Grade A, and why
multi-worktree-dev scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -sf --max-time 3 "$url" >/dev/null 2>&1 \ How it starts
The opening of the file, as written. The whole thing — 514 lines — stays where its author put it; the contents beside it link to each section on GitHub.
multi-worktree-dev
Handbook for designing and deploying parallel multi-worktree development environments — helps teams define a layered environment strategy that supports concurrent worktree development, parallel testing, and stable shared infrastructure.
Core Design Goals
| Goal | Specific Design |
|---|---|
| Zero complexity | Creating a new worktree requires no manual configuration — make dev handles all setup automatically |
| Parallel safety | Tests across multiple worktrees run fully in parallel without blocking each other |
| Shared channel exclusivity | Singleton channels like Feishu WS are held by only one worktree at a time |
| Instant layer switching | Layer 1 stays running; switching worktrees only requires starting L2/L3 |
| Zero port conflicts | Ports are assigned via automatic hash offset; developers never need to manually edit configuration |
| Smooth development | Layer 3 is fully hot-reloaded; code changes require no process restart |
Description
This Skill covers designing a local environment system from scratch that supports parallel multi-branch development. The core idea is the following three-layer separation structure:
| Layer | Description | Lifecycle |
|---|---|---|
| Layer 1 — Global Shared Infra | Database, cache, message queue (Kafka/RabbitMQ), LLM proxy, and other heavyweight services | Always running, shared across all branches |
| Layer 2 — Worktree-Exclusive Infra | Services that require isolation (e.g., Temporal, secret store) | Started/stopped with the worktree |
| Layer 3 — Host Processes | Application services (API, Worker, frontend) | Hot-reloaded, run directly on the host machine |
Rules
Rule 0 — Scan the codebase first; auto-discover services
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 4d ago First seen · 514 lines · 82 tokens per session scan A 0fcf2ef464d3
multi-worktree-dev is a skill published in the GitHub repository addxai/enterprise-harness-engineering (44 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 82 tokens to every session and 5,983 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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