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.
npx agentmods add skills/wufunc/nova/devlog-creatornpx skills add wufunc/nova --skill devlog-creatorgit clone --depth 1 https://github.com/wufunc/novaWhat 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.
| Model | Per session | Once 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 |
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.
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:
- Title: Concise description of the insight/lesson (not what was done, but what was learned)
- YAML Frontmatter: Must include tags, modules, summary, tag
- Date: Precise to the minute, format
YYYY-MM-DD HH:mm - 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
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.
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.
- yesterday First seen · 83 lines · 77 tokens per session scan A 6b7ac9157f2b
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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