agentmods.dev

CodexSkillManager AGENTS.md

Project instructions for CodexSkillManager, a small macOS app that lists installed Codex skills. It explains the app's SwiftUI interface, folder scanning, build commands, and release packaging.

In plain words
What is it for?
Use it when editing, building, running, packaging, signing, notarizing, or releasing CodexSkillManager.
Why use it?
It gives coding agents the project facts and required checks so changes can be built and packaged consistently.

Instructions file for CodexOpenCode

1.4k 7mo ago A scan 880 tokens original MIT
View the source file Dimillian/CodexSkillManager
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 instructions/dimillian/codexskillmanager/agents-md
Clone the repo
git clone --depth 1 https://github.com/Dimillian/CodexSkillManager

Made for: Codex, OpenCode.

Per session 880 This file is loaded in full into every session.
When invoked 880 The same file — it is already loaded in full.
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 $0.00880 $0.00880
Opus 5 $0.00440 $0.00440
Sonnet 5 $0.00176 $0.00176
Haiku 4.5 $0.00088 $0.00088

Measured yesterday against content hash fa42ec8ea182, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

CodexSkillManager AGENTS.md 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 yesterday.

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.

AGENTS.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CodexSkillManager

What this app is

CodexSkillManager is a small macOS SwiftUI app built with SwiftPM (no Xcode project) that lists the Codex skills installed in the user's public skills folder.

How it works

  • The app scans ~/.codex/skills and ~/.codex/skills/public for subdirectories.
  • Each directory name becomes a skill entry.
  • The UI is a SwiftUI NavigationSplitView with a list on the left and a detail view on the right.
  • The detail view shows the skill name and its full path.

Build and run

  • Build: swift build
  • Run: swift run CodexSkillManager When editing this app, build after each change and fix any compile errors before continuing.

Packaging and release

Use the macos-spm-app-packaging skill for packaging, notarization, appcast, and GitHub release steps. Local packaging helpers live in Scripts/:

  • Scripts/compile_and_run.sh: package (adhoc sign) + launch the .app.
  • Scripts/package_app.sh: build and create CodexSkillManager.app.
  • Scripts/sign-and-notarize.sh: sign + notarize for releases.
  • Scripts/make_appcast.sh: generate Sparkle appcast from a zip.
  • Scripts/generate_sparkle_keys.sh: generate Sparkle keypair and export private key.

Sparkle env vars (set in ~/.zshrc):

  • SPARKLE_PUBLIC_KEY
  • SPARKLE_PRIVATE_KEY_FILE
  • SPARKLE_FEED_URL

Release flow (commit → changelog → notarize → appcast → GitHub release)

  1. Update version: bump MARKETING_VERSION and BUILD_NUMBER in version.env.
  2. Build: swift build.
  3. Commit + push:
    • git add -A
    • git commit -m "feat: ..." (or other Conventional Commit type)
    • git push
  4. Write release notes (short, user-facing bullets) and save to a file, e.g. /tmp/codexskillmanager-release-notes-<version>.md.
  5. Notarize and package:
    • APP_STORE_CONNECT_API_KEY_P8="/path/to/key.p8" APP_STORE_CONNECT_KEY_ID="..." APP_STORE_CONNECT_ISSUER_ID="..." APP_IDENTITY="Developer ID Application: ..."
    • ./Scripts/sign-and-notarize.sh
    • Note: SPARKLE_PUBLIC_KEY must be set (and SPARKLE_FEED_URL if non-default) or the build will be missing Sparkle keys and updates will not work.
  6. Generate Sparkle appcast entry:
    • SPARKLE_PRIVATE_KEY_FILE="..." ./Scripts/make_appcast.sh CodexSkillManager-<version>.zip https://raw.githubusercontent.com/Dimillian/CodexSkillManager/main/appcast.xml
    • Note: Sparkle uses the build number (BUILD_NUMBER) for sparkle:version, so it must increase each release.
    • git add appcast.xml
    • git commit -m "chore: update sparkle appcast"
    • git push
  7. Publish GitHub release (creates the tag):
    • gh release create v<version> CodexSkillManager-<version>.zip appcast.xml --title "Codex Skill Manager <version>" --notes-file /tmp/codexskillmanager-release-notes-<version>.md

Read the full file on GitHub · 59 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. yesterday First seen · 59 lines · 880 tokens per session scan A fa42ec8ea182

Subscribe to this mod's changes

CodexSkillManager AGENTS.md is an instructions file published in the GitHub repository Dimillian/CodexSkillManager (1,366 stars, last pushed 7mo ago), licensed MIT. It adds 880 tokens to every session, about $0.0044 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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