devlog-creator

A writing component that turns coding-session context into a structured development log, a file that records lessons learned for future work.

In plain words
What is it for?
Use it to create numbered development-log files with dates, tags, summaries, and lessons from a coding session.
Why use it?
It removes the need to manually decide what to record or format the entry. It runs only when another memory tool has decided that a log is needed.

Skill for Claude CodeCodex

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 skills/wufunc/nova/devlog-creator
Any agent
npx skills add wufunc/nova --skill devlog-creator
Clone the repo
git clone --depth 1 https://github.com/wufunc/nova

Made for: Claude Code, Codex.

Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 674 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00077 $0.00674
Opus 5 $0.00039 $0.00337
Sonnet 5 $0.00015 $0.00135
Haiku 4.5 $0.00008 $0.00067

Measured yesterday against content hash 6b7ac9157f2b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

devlog-creator 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.

skills/devlog-creator/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DevLog Creator

Overview

Pure writer skill that creates DevLog entries. Always invoked by the memory skill, never directly. Receives the session context and generates a structured devlog file capturing development experience that would help future sessions.

Workflow

Step 1: Determine DevLog Number

# Find existing devlogs to determine next number
Glob pattern: .nova/memory/devlog/[0-9]*.md

# Use next sequential three-digit number (001, 002, 003...)

Step 2: Determine Memory Tag

# Find the latest mem tag to determine next number
git tag -l 'mem/*' --sort=-version:refname | head -1

# Next tag: mem/NNN (increment by 1)
# If no tags exist, use mem/001

If the memory skill has already provided a tag name (because an ADR is also being created in this session), use that same tag.

Step 3: Generate DevLog Content

Analyze the conversation to extract development experience. Follow the format in references/devlog-format.md.

Content Guidelines:

  1. Title: Concise description of the insight/lesson (not what was done, but what was learned)
  2. YAML Frontmatter: Must include tags, modules, summary, tag
  3. Date: Precise to the minute, format YYYY-MM-DD HH:mm
  4. Body sections:
    • Context: Brief background on what triggered this insight
    • Insight/Lesson: The core knowledge to preserve
    • Implications: What future sessions should do differently because of this

Quality Principles:

  • Focus on non-obvious information that code alone cannot express
  • Be specific and actionable, not vague
  • Keep entries concise (~50-150 lines)
  • One clear insight per entry; create multiple entries if the session yielded multiple independent lessons

Step 4: Create DevLog File

Write to .nova/memory/devlog/ directory:

# Example:
Write .nova/memory/devlog/003-gemini-utf8-boundary.md

Filename format: NNN-短横线分隔的关键词.md (use English or pinyin for filenames).

Step 5: Report Result

Return to the caller (memory skill):

  • DevLog number and title
  • File path
  • Tag name used

Read the full file on GitHub · 83 lines

Files

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.

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 · 83 lines · 77 tokens per session scan A 6b7ac9157f2b

Subscribe to this mod's changes

devlog-creator is a skill published in the GitHub repository wufunc/nova (2 stars, last pushed 4mo ago), licensed MIT. It adds 77 tokens to every session and 674 once invoked, about $0.0004 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.

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