kb-update

A command for updating the index of files in the 20-knowledge/ folder. It handles requests to organize knowledge, add files to the knowledge base, or refresh its index.

In plain words
What is it for?
Registering knowledge files and refreshing the 20-knowledge/ index; external research and editing reference documents use separate commands.
Why use it?
It keeps the knowledge folder's index current after new files are added or knowledge is reorganized.

Command for Claude Code

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 commands/fivetaku/idea-lab/kb-update
Clone the repo
git clone --depth 1 https://github.com/fivetaku/idea-lab

Made for: Claude Code.

Per session 115 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 783 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00115 $0.00783
Opus 5 $0.00057 $0.00392
Sonnet 5 $0.00023 $0.00157
Haiku 4.5 $0.00012 $0.00078

Measured 2d ago against content hash a9902a01b696, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

kb-update 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 2d 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/commands/kb-update.md · 58 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 58 lines · 115 tokens per session scan A a9902a01b696

Subscribe to this mod's changes

kb-update is a command published in the GitHub repository fivetaku/idea-lab (2 stars, last pushed 1mo ago), with no licence file. It adds 115 tokens to every session and 783 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.