dev-wiki

Instructions for a shared developer memory system that stores useful facts, decisions, errors, and project context across conversations. It separates general knowledge from information tied to one project.

In plain words
What is it for?
Use it to decide what to save, where to store it, how to retrieve it, and when to record completed work or lessons learned.
Why use it?
It helps coding work continue across sessions without relying only on the current chat history.

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/oleg494/coding-kit/dev-wiki
Any agent
npx skills add oleg494/coding-kit --skill dev-wiki
Clone the repo
git clone --depth 1 https://github.com/oleg494/coding-kit

Made for: Claude Code, Codex.

Per session 120 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 855 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 $0.00120 $0.00855
Opus 5 $0.00060 $0.00428
Sonnet 5 $0.00024 $0.00171
Haiku 4.5 $0.00012 $0.00085

Measured yesterday against content hash 46bf14f165e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dev-wiki 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/dev-wiki/SKILL.md · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dev Wiki — cross-chat developer memory

Always-on skill. Knowledge base: decisions, bugs, patterns, architectural decisions. Memory lives in ~/.memory/ (global + per-project hierarchy; env MEMORY_ROOT overrides).

Boundary rule

Knowledge Where Index
Portable (patterns, lessons, decisions) ~/.memory/Wiki/<type>/ python ~/.memory/db-tools/build.py
Project-specific (status, configs, context) WORK/<project>/docs/ python ~/.memory/db-tools/build.py -r <root> -o ~/.memory/db/<name>.db

Knowledge lives/dies with the project → project; portable across projects → global Wiki.

Save reflex (proactive, not only on request)

  • On every finished task / made decision / closed bug — 10-second check: would a future session need this? Yes → save. No → skip (noise-free is deliberate).
  • Conclusions → findings.py add; portable patterns → Wiki; realizations by trigger below.

Record types (global Wiki)

Type Folder When
reference ~/.memory/Wiki/reference/ Fact, documentation, knowledge
howto ~/.memory/Wiki/howto/ Instruction, guide
error ~/.memory/Wiki/errors/ Bug, incident, lesson learned
decision ~/.memory/Wiki/decisions/ ADR, architectural decision
idea ~/.memory/Wiki/ideas/ Idea

Workflow — save (global)

  1. Determine the type → folder in ~/.memory/Wiki/.
  2. Create file ~/.memory/Wiki/<type>/<slug>.md with frontmatter:
    ---
    type: reference
    title: "Title"
    description: "About what"
    date: 2026-08-15
    tags: [category, topic]
    ---
    
  3. Update ~/.memory/Wiki/index.md.
  4. Append to ~/.memory/Wiki/log.md.
  5. python ~/.memory/db-tools/build.py
  6. python ~/.memory/db-tools/lint_wiki.py
  7. Important conclusion → python ~/.memory/db-tools/findings.py add "topic" --text "conclusion" --source path
python ~/.memory/db-tools/search_all.py "query"          # all databases at once
python ~/.memory/db-tools/search_all.py "query" --substring   # declensions/substrings

Read the full file on GitHub · 75 lines

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 · 75 lines · 120 tokens per session scan A 46bf14f165e3

Subscribe to this mod's changes

dev-wiki is a skill published in the GitHub repository oleg494/coding-kit (1 stars, last pushed yesterday), licensed MIT. It adds 120 tokens to every session and 855 once invoked, about $0.0006 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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