skill-update

A command for checking installed skills for updates and guiding the user through applying them. It can inspect all repository-backed skills or a named skill.

In plain words
What is it for?
Use it to list skills needing checks, check one skill, check all Git-backed skills, and guide updates or source-page checks for manually installed skills.
Why use it?
It helps find skills that may be out of date without checking each source manually. It also reports when no Git-based skills are available for automatic checking.

Command

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/evol-ai/skillcompass/skill-update
Clone the repo
git clone --depth 1 https://github.com/Evol-ai/SkillCompass
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,432 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 $0.00000 $0.01432
Opus 5 $0.00000 $0.00716
Sonnet 5 $0.00000 $0.00286
Haiku 4.5 $0.00000 $0.00143

Measured 2d ago against content hash 8c49f46b49cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-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.

commands/skill-update.md · 155 lines

How it starts

The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/skill-update — Check and Update Skills

Locale: All templates in this spec are written in English. Detect the user's language from the session and translate user-facing text at display time per SKILL.md's Global UX Rules. Dimension labels: see the canonical table in SKILL.md.

Check installed skills for remote updates and guide the user through updating and evaluating them.

Arguments

  • (no args): list all skills that need checking and let the user choose
  • <skill-name>: check the specified skill for updates
  • all: check all git-repo-backed skills

Step 1: Load Inventory and Check Git Status

Use lib/update-checker.js to scan all skills:

const { UpdateChecker } = require('./lib/update-checker');
const checker = new UpdateChecker();
const stale = checker.getStale(inventory, 7); // not checked in last 7 days
const allGit = checker.checkAll(inventory);    // all git-repo-backed skills

Execute via Bash node -e.

If no git-based skills found:

No git-repo-backed skills found; cannot check for updates.
For manually installed skills, check the source page for new versions.

Stop.

Step 2: Display and Select

If called with all: skip selection, check all git skills.

If called with <skill-name>: skip selection, check that skill only.

If called with no args: show the list and let user choose. Follow gstack's AskUserQuestion pattern — re-ground context, simplify, recommend, show options with effort scale.

{N} skills available to check for updates (git repo-backed):

  1. code-review     last checked: 12 days ago   github.com/user/code-review
  2. superpowers     last checked: 9 days ago    github.com/obra/superpowers
  3. doc-writer      last checked: 15 days ago   github.com/user/doc-writer
  4. ecc             last checked: 8 days ago    github.com/affaan-m/everything-claude-code

Checking updates requires network (git fetch), about 5 seconds each.

Enter a number, a name, or comma-separated list (e.g. 1,3), or type "all".
You can also type any other skill name directly.

[Check all / Select / Skip]

Read the full file on GitHub · 155 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. 2d ago First seen · 155 lines · 0 tokens per session scan A 8c49f46b49cb

Subscribe to this mod's changes

skill-update is a command published in the GitHub repository Evol-ai/SkillCompass (215 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,432 tokens. 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.