devlog

devlog is a plugin for Claude Code from nikitaCodeSave/claude-code-harness. Its manifest loads nothing; the 1 skill, 1 hook it bundles cost 114 tokens per session together, scanned A, original, MIT.

A development log system that records important code changes, such as features, fixes, refactors, and decisions, in Markdown files.

In plain words
What is it for?
It creates devlog entries, rebuilds an index and short summary, and shows recent entries and active progress when a session starts.
Why use it?
It preserves what changed and why across sessions, so an agent or developer can recover project context after a handoff or loss of conversation history.

Plugin for Claude Code

Written for Claude Code: SessionStart hook event.

Good fit It creates devlog entries, rebuilds an index and short summary, and shows recent entries and active progress when a session starts.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add nikitaCodeSave/claude-code-harness
/plugin install devlog
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/nikitaCodeSave/claude-code-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 devlog

README.md
[![agentmods](https://agentmods.dev/badge/plugins/nikitacodesave/claude-code-harness/devlog/github.svg)](https://agentmods.dev/plugins/nikitacodesave/claude-code-harness/devlog)
Your own site
<a href="https://agentmods.dev/plugins/nikitacodesave/claude-code-harness/devlog"><img src="https://agentmods.dev/badge/plugins/nikitacodesave/claude-code-harness/devlog/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 devlog

Your own site · 80×15
<a href="https://agentmods.dev/plugins/nikitacodesave/claude-code-harness/devlog"><img src="https://agentmods.dev/badge/plugins/nikitacodesave/claude-code-harness/devlog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill, 1 hook cost 114 tokens a session between them.
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.
Security

Grade A, and why

devlog 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 1mo 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.

plugins/devlog/.claude-plugin/plugin.json · 21 lines

What it actually says

{
  "$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
  "name": "devlog",
  "version": "1.28.0",
  "description": "Records significant changes to .claude/devlog/ — one markdown entry per feature/fix/refactor/decision, with a script that regenerates index.json + tldr.md, plus a SessionStart digest that surfaces recent devlog entries + active progress at session start (silent in projects that keep neither). The episodic 'what changed and why' layer that survives compaction and hands state to the next session.",
  "author": {
    "name": "nikitaCodeSave",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/nikitaCodeSave/claude-code-harness",
  "repository": "https://github.com/nikitaCodeSave/claude-code-harness",
  "license": "MIT",
  "keywords": [
    "claude-code",
    "devlog",
    "changelog",
    "continuity",
    "session-handoff"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill, 1 hook travel with it, and installing the plugin installs all of them — 114 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 1mo ago Changed be60fb4f6dd1
  2. 1mo ago Changed 85b4f1ffbf61
  3. 1mo ago First seen · 21 lines scan A 415a72b8e664

Subscribe to this mod's changes

devlog is a plugin published in the GitHub repository nikitaCodeSave/claude-code-harness (4 stars, last pushed 1mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.