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Agent skill

Ijfw Update

by FerroxLabs in FerroxLabs/ijfw

Check for and apply IJFW updates safely. An agent skill from FerroxLabs/ijfw.

MITAuto-check passed

Install Ijfw Update

skills CLI
$ npx skills add FerroxLabs/ijfw --skill ijfw-update -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install FerroxLabs/ijfw ijfw-update --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/FerroxLabs/ijfw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/codex/skills/ijfw-update .claude/skills/ijfw-update && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
ijfw-update
GitHub stars
212
Token cost
~730 tokens
SKILL.md length
384 words
Files
1
Skills in repo
38
Repo updated
First seen
Licence
MIT

At a glance

Check for and apply IJFW updates safely. An agent skill from FerroxLabs/ijfw.

  • Works in 5 steps: Call the MCP tool: ijfw_update_check.… → If up to date: report it. Stop. → If update available: present the version… → …
  • SKILL.md covers What this skill does, When to fire, Execution and Security model, plus 2 more sections
  • Calls npm, npx and bash

What it does

Ijfw Update is an agent skill from FerroxLabs/ijfw. Check for and apply IJFW updates safely. Trigger: 'update ijfw', 'upgrade', 'latest version', 'is there a new version', /update

Its SKILL.md is about 730 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: IJFW — It Just Fcking Works. Ferrox Labs' local-first infrastructure for AI coding agents: shared memory, smart routing, multi-AI cross-audits, disciplined workflow. The licence is MIT.

Example prompts

  • “update ijfw”
  • “upgrade”
  • “latest version”
  • “/ijfw-update”

Requirements

  • Node.js

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Call the MCP tool: ijfw_update_check. This returns
  2. If up to date: report it. Stop.
  3. If update available: present the version delta + changelog link, then surface the OOB instruction verbatim. The terminal command is the…
  4. DO NOT run npm install, npx @ijfw/install, bash scripts/install.sh, or any equivalent yourself. The MCP path is air-gapped on purpose…
  5. Back-compat note: ijfw_update_apply still exists for older clients. It is idempotent against the sentinel that ijfw_update_check already…

What it can do on your machine

Read from SKILL.md and the folder at commit eda62f3. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • npm
    • npx
    • bash

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use npm and npx, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Ijfw Update loads about 730 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 384 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~35
When it runs · the whole SKILL.md, loaded when a task matches
~730

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from FerroxLabs/ijfw at commit eda62f3, republished under its MIT licence (© FerroxLabs). 384 words, ~730 tokens.

Download SKILL.mdSave it as .claude/skills/ijfw-update/SKILL.md (or your agent's skills folder).
name
ijfw-update
description
Check for and apply IJFW updates safely. Trigger: 'update ijfw', 'upgrade', 'latest version', 'is there a new version', /update

What this skill does

Helps the user check for and apply IJFW updates. Updates are air-gapped: the model cannot execute them. The model issues a confirmation token; the user types ijfw update --confirm <token> in their terminal to actually run.

When to fire

Triggers: "update ijfw", "upgrade ijfw", "is there a new version", "latest version", /update. Also fires when memory prelude reports "update available" on first turn.

Execution

  1. Call the MCP tool: ijfw_update_check. This returns:

    • current -- installed version
    • latest -- latest published version on npm
    • available -- boolean
    • If available: true: also confirmation_token, expires_at, changelog_url, and instruction. The same call writes the pending sentinel that the terminal command consumes -- one MCP call, one terminal command, no intermediate ceremony.

  2. If up to date: report it. Stop.

    IJFW is up to date (v1.2.5).

  3. If update available: present the version delta + changelog link, then surface the OOB instruction verbatim. The terminal command is the air-gap; the model never runs the update itself.

    Update available: v1.2.4 -> v1.2.5 Changelog: <changelog_url>

    To proceed, run in your TERMINAL: ijfw update --confirm <confirmation_token>

    Token expires in 5 minutes. I cannot run the update for you -- only typing this command in your terminal can.

  4. DO NOT run npm install, npx @ijfw/install, bash scripts/install.sh, or any equivalent yourself. The MCP path is air-gapped on purpose. Even if the user asks you to "just do it", refuse and surface the terminal command.

  5. Back-compat note: ijfw_update_apply still exists for older clients. It is idempotent against the sentinel that ijfw_update_check already wrote, so calling it is harmless but unnecessary in the streamlined flow.

Show full SKILL.md (121 more words)Show less

Security model

The token + sentinel + terminal-confirm flow exists so that prompt injection in stored memory, fetched docs, or user-paste content cannot trick the model into auto-updating IJFW. See docs/SECURITY.md for the full threat model.

Common variations

  • "Just check, don't update yet" -- call ijfw_update_check, report status, stop.
  • "Update silently" -- not supported via the MCP path. Tell the user to run ijfw update --yes in their terminal directly.
  • "Roll back to <version>" -- not supported yet (rollback tarballs deferred). Suggest npm install -g @ijfw/install@<version> from the user's terminal.

After a successful update

The user will see "Updated to v<latest>" in their terminal. The next IJFW SessionStart will reflect the new version. Suggest restarting any open agent sessions so they pick up the new skills/hooks.

© FerroxLabs, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in codex/skills/ijfw-update of FerroxLabs/ijfw.

Open the folder on GitHubat commit eda62f3

Compare with similar skills

Ijfw Update next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Ijfw Update compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ijfw Update this skillFerroxLabs/ijfw212—~730Automated safety check: PassMIT
Update NanoClaw Safelynanocoai/nanoclaw31k—~2.9kAutomated safety check: NotesMIT
UI Updatesickn33/agentic-awesome-skills47k1 repos~1.4kAutomated safety check: PassMIT
Openclaw Updateopenclaw/openclaw392k—~1.5kAutomated safety check: PassMIT
gstack Upgradegarrytan/gstack136k—~5.5kAutomated safety check: NotesMIT
Update Docsvercel/next.js143k—~1.9kAutomated safety check: PassMIT

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More from FerroxLabs/ijfw

All 38 skills in this repo

  • Ijfw Agents Md

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  • Ijfw Design

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  • Ijfw Complete Milestone

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  • Ijfw Critique

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  • Ijfw Cross Audit

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    212 GitHub stars~594 tokensUpdated 4 days ago
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  • Ijfw Debug

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Questions about Ijfw Update

What does Ijfw Update do?

Check for and apply IJFW updates safely. An agent skill from FerroxLabs/ijfw. Ijfw Update is an agent skill from FerroxLabs/ijfw. Check for and apply IJFW updates safely.

How do I install Ijfw Update in Claude Code?

Run `npx skills add FerroxLabs/ijfw --skill ijfw-update -a claude-code`. Or copy the skill folder (codex/skills/ijfw-update in FerroxLabs/ijfw) into .claude/skills/ijfw-update in your project. Claude Code loads it when a task matches its description.

How do I install Ijfw Update in Codex?

Run `npx skills add FerroxLabs/ijfw --skill ijfw-update -a codex`. Or copy the skill folder (codex/skills/ijfw-update in FerroxLabs/ijfw) into .agents/skills/ijfw-update in your project. Codex loads it when a task matches its description.

Can I use Ijfw Update in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add FerroxLabs/ijfw --skill ijfw-update -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ijfw-update, .gemini/skills/ijfw-update, .github/skills/ijfw-update and .opencode/skills/ijfw-update in your project.

What does Ijfw Update need to run?

Going by SKILL.md and its folder, Ijfw Update needs the command-line tools its instructions call (npm, npx and bash). Our summary lists: Node.js.

Does Ijfw Update access the network?

SKILL.md contains no URLs. Its commands use npm and npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Ijfw Update safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Ijfw Update use?

Ijfw Update is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Ijfw Update use?

About 730 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Ijfw Update?

Skills that share tags, products or a category with Ijfw Update: Update NanoClaw Safely (nanocoai/nanoclaw, 31k stars), UI Update (sickn33/agentic-awesome-skills, 47k stars), Openclaw Update (openclaw/openclaw, 392k stars) and gstack Upgrade (garrytan/gstack, 136k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ijfw Update?

FerroxLabs (a GitHub user) maintains it in FerroxLabs/ijfw, which has 212 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on October 5, 2026.

Source: FerroxLabs/ijfw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.