dev

A local development command that starts the project in either self-hosted or software-as-a-service mode. It handles deployment-mode detection, SaaS safeguards, cookie prefixes, and the Turbopack build-cache issue.

In plain words
What is it for?
Use /dev with self-host or saas, and optionally clean or stop, to start, reset, or stop the local development environment.
Why use it?
It avoids common local-startup problems caused by different deployment modes and cached development builds.

Command for Claude Code

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.

agentmods
npx agentmods add commands/atlasdevhq/atlas/dev
Clone the repo
git clone --depth 1 https://github.com/AtlasDevHQ/atlas

Made for: Claude Code.

Per session 50 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,034 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. Scan, not verified.
Origin unknown 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 $0.00050 $0.02034
Opus 5 $0.00025 $0.01017
Sonnet 5 $0.00010 $0.00407
Haiku 4.5 $0.00005 $0.00203

Measured yesterday against content hash 8392313d91f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

dev scanned grade C with 2 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 yesterday.

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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm -rf packages/web/.next packages/web/node_modules/.cache node_modules/.cache

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- API: `curl -sf http://localhost:3001/api/health` returns (503 is fine — means it's serving; the app answers even when a provider key is missing).
.claude/commands/dev.md · 75 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. yesterday First seen · 75 lines · 50 tokens per session scan C 8392313d91f6

Subscribe to this mod's changes

dev is a command published in the GitHub repository AtlasDevHQ/atlas (1 stars, last pushed yesterday), licensed AGPL-3.0. It adds 50 tokens to every session and 2,034 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.