knowledge-wiki-summary

A tool for creating or refreshing short summaries of Markdown files in a knowledge base, such as a personal wiki or collection of notes.

In plain words
What is it for?
It helps find new or outdated notes, read them, and write their summaries into a Wiki/Summaries folder.
Why use it?
It helps keep summary pages current without repeatedly processing files that have not changed.

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/catchen/knowledge-wiki-template/knowledge-wiki-summary
Any agent
npx skills add CatChen/knowledge-wiki-template --skill knowledge-wiki-summary
Clone the repo
git clone --depth 1 https://github.com/CatChen/knowledge-wiki-template

Made for: Claude Code, Codex.

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,376 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 $0.00045 $0.01376
Opus 5 $0.00023 $0.00688
Sonnet 5 $0.00009 $0.00275
Haiku 4.5 $0.00005 $0.00138

Measured 3d ago against content hash 7c1ebbb64374, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

knowledge-wiki-summary 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.

.claude/skills/knowledge-wiki-summary/SKILL.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Knowledge Wiki Summary

Batch process all stale or new knowledge base files and write their wiki summaries. Incremental — only processes files whose content has changed since the last summary was written.

Steps

1. Establish the working directory

The knowledge base root is the Git repository root. Run git rev-parse --show-toplevel and store the result as KNOWLEDGE_PATH.

Use KNOWLEDGE_PATH for all subsequent steps.

2. Find files that need summarizing

Run:

node {KNOWLEDGE_PATH}/scripts/wiki/wiki-summary.mjs list-stale

Output format:

{ "sources": ["Posts/Buy Me a Coffee.md", ...] }

Each entry is a source file path relative to KNOWLEDGE_PATH.

If sources is empty, print Nothing to summarize. and stop.

3. Process each file

For each entry in sources, run the following sub-steps in order.


3a. Read the source file

If the source file is 1500 lines or fewer, read it directly with the Read tool in the main context and proceed to step 3b.

If the source file is over 1500 lines, spawn a subagent to read the full source. Brief the subagent with:

  • The source file path: {KNOWLEDGE_PATH}/{source_path}
  • The full step 3b content-generation instructions (copy the entire section into the prompt)

Instruct the subagent to:

  1. Read the full source file using the Read tool, using offset/limit for subsequent pages if the file is truncated
  2. Generate and return all of the following (do not write any files):
    • Tags (3–8 lowercase English tags, comma-separated)
    • Title (in source language)
    • ## Summary content (2–4 sentences in source language)
    • ## Key Concepts bullets (in source language)
    • ## Notable Details content (in source language)
    • A one-line English description of the source document (used in step 3d)

When the subagent returns, skip the generation part of step 3b and proceed directly to the create command in step 3c, using the content the subagent returned.


Read the full file on GitHub · 149 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 · 149 lines · 45 tokens per session scan A 7c1ebbb64374

Subscribe to this mod's changes

knowledge-wiki-summary is a skill published in the GitHub repository CatChen/knowledge-wiki-template (105 stars, last pushed 2mo ago), licensed MIT. It adds 45 tokens to every session and 1,376 once invoked, about $0.0002 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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