dev-overnight

dev-overnight is a command for Claude Code from Yugoge/awesome-claude-harness. It costs 22 tokens per session (32,888 once invoked), scanned A, original, no licence file.

An automated development command that repeatedly inspects a codebase, fixes issues, and continues until a chosen end time.

In plain words
What is it for?
It helps run unattended cycles of code exploration, issue finding, and code changes overnight.
Why use it?
It reduces the need for a developer to keep returning to the computer to start the next check or fix during a long development session.

Command for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Good fit It helps run unattended cycles of code exploration, issue finding, and code changes overnight.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/yugoge/awesome-claude-harness/dev-overnight
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/Yugoge/awesome-claude-harness

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 dev-overnight

README.md
[![agentmods](https://agentmods.dev/badge/commands/yugoge/awesome-claude-harness/dev-overnight/github.svg)](https://agentmods.dev/commands/yugoge/awesome-claude-harness/dev-overnight)
Your own site
<a href="https://agentmods.dev/commands/yugoge/awesome-claude-harness/dev-overnight"><img src="https://agentmods.dev/badge/commands/yugoge/awesome-claude-harness/dev-overnight/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 dev-overnight

Your own site · 80×15
<a href="https://agentmods.dev/commands/yugoge/awesome-claude-harness/dev-overnight"><img src="https://agentmods.dev/badge/commands/yugoge/awesome-claude-harness/dev-overnight.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 32,888 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 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 5.1 $0.00022 $0.32888
Opus 5 $0.00011 $0.16444
Sonnet 5 $0.00004 $0.06578
Haiku 4.5 $0.00002 $0.03289

Measured 4d ago against content hash c89a19550eeb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

dev-overnight 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 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.

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/dev-overnight.md · 1,880 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 4d ago Changed · -15 lines c89a19550eeb
  2. 9d ago First seen · 1,895 lines · 22 tokens per session scan A e2684eab5eb2

Subscribe to this mod's changes

dev-overnight is a command published in the GitHub repository Yugoge/awesome-claude-harness (1 stars, last pushed 2d ago), with no licence file. It adds 22 tokens to every session and 32,888 once invoked, about $0.0001 per session on Opus 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 2026-08-31.