update-wiki

update-wiki is a skill for Claude Code, Codex from djscheuf/agentic-dev-ecosystem-template. It costs 57 tokens per session (761 once invoked), scanned A, original, MIT.

A workflow for maintaining a project's wiki in the vault/ folder after a session changes facts, decisions, ownership, incidents, or terminology.

In plain words
What is it for?
Updating topic pages, recording architecture decisions and incidents, adding glossary terms, creating needed stubs, and updating the wiki index without deleting existing content.
Why use it?
It preserves useful session knowledge so later work has the right context and can find related information through links.

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/djscheuf/agentic-dev-ecosystem-template/update-wiki
Any agent
npx skills add djscheuf/agentic-dev-ecosystem-template --skill update-wiki
Clone the repo
git clone --depth 1 https://github.com/djscheuf/agentic-dev-ecosystem-template

Made for: Claude Code, Codex.

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 update-wiki

README.md
[![agentmods](https://agentmods.dev/badge/skills/djscheuf/agentic-dev-ecosystem-template/update-wiki.svg)](https://agentmods.dev/skills/djscheuf/agentic-dev-ecosystem-template/update-wiki)
Your own site
<a href="https://agentmods.dev/skills/djscheuf/agentic-dev-ecosystem-template/update-wiki"><img src="https://agentmods.dev/badge/skills/djscheuf/agentic-dev-ecosystem-template/update-wiki.svg" alt="Measured on agentmods" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 761 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 $0.00057 $0.00761
Opus 5 $0.00028 $0.00380
Sonnet 5 $0.00011 $0.00152
Haiku 4.5 $0.00006 $0.00076

Measured 3d ago against content hash 9392663b0feb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

update-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 3d 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.

.devin/skills/update-wiki/SKILL.md · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Wiki Update

After a session, update the project's vault/ so future sessions have the context.

When to Run

The session did at least one of:

  • Made an architectural decision → vault/decisions/ADR-NNN.md
  • Learned who owns a system → vault/people/<name>.md + link from vault/services/<svc>.md
  • Fixed an incident → vault/incidents/YYYY-MM-DD-<short>.md with root cause + fix + invariant to add to AGENTS.md
  • Added a term of art → vault/glossary.md
  • Chose a library / service / pattern → capture the choice + the alternatives considered

If none of those happened, output "no wiki updates needed" and stop.

Process

  1. Read vault/INDEX.md to know the current shape of the wiki.
  2. For each new fact, prefer updating an existing page. Only create new pages for genuinely new topics.
  3. Use [[wikilinks]] between entities. If you reference a page that doesn't exist, create a stub with a "TODO" note.
  4. Append-only. Never rewrite existing content. Mark stale sections with > **Stale as of YYYY-MM-DD:** ... and add the new section below.
  5. Update vault/INDEX.md with any new pages.
  6. Number ADRs sequentially — check the existing count in vault/decisions/ before picking a number.
  7. Output a one-line summary of what you updated.

ADR Template

# ADR-NNN: <Decision title>

**Status:** Proposed | Accepted | Deprecated | Superseded by ADR-XXX
**Date:** YYYY-MM-DD
**Author:** <name or @role>

## Context
Why are we deciding this now? What forces are at play?

## Decision
What are we doing?

## Consequences
### Positive
-

### Negative
-

### Neutral / Follow-up
-

## Alternatives Considered
- **<Alternative 1>** — rejected because...
- **<Alternative 2>** — rejected because...

Incident Template

# YYYY-MM-DD: <One-line title>

**Severity:** SEV1 | SEV2 | SEV3
**Duration:** X hours
**Customer impact:** <facts, numbers>

## Timeline
- HH:MM — first symptom observed
- HH:MM — on-call paged
- HH:MM — mitigation started
- HH:MM — resolved

## Root cause
One paragraph. Factual, not blame-assigning.

## Contributing factors
- Factor 1
- Factor 2

## What went well
-

## What could have gone better
-

## Action items
- [ ] **<Owner>** — <action> — by <date>

## Invariant to add to AGENTS.md
(If this incident reveals a rule that should be constitutional, write it here and add to AGENTS.md.)

Read the full file on GitHub · 103 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. 3d ago First seen · 103 lines · 57 tokens per session scan A 9392663b0feb

Subscribe to this mod's changes

update-wiki is a skill published in the GitHub repository djscheuf/agentic-dev-ecosystem-template (12 stars, last pushed 4d ago), licensed MIT. It adds 57 tokens to every session and 761 once invoked, about $0.0003 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 2026-08-30.

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