devlog

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

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.

Claude Code
/plugin marketplace add nikitaCodeSave/claude-code-harness
agentmods
npx agentmods add plugins/nikitacodesave/claude-code-harness/devlog
Clone the repo
git clone --depth 1 https://github.com/nikitaCodeSave/claude-code-harness

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
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 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.

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": "1.25.0",
  "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"
  ]
}
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 · 21 lines scan A 415a72b8e664

Subscribe to this mod's changes

devlog is a plugin published in the GitHub repository nikitaCodeSave/claude-code-harness (5 stars, last pushed 3d 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.