tkr-skill-writer

tkr-skill-writer is a skill for Codex from tomkrikorian/visionOSAgents. It costs 37 tokens per session (1,273 once invoked), scanned A, original, MIT.

A guide for creating and organizing skills for coding agents, with consistent documentation, references, usage conditions, and optional metadata.

In plain words
What is it for?
Use it when creating a new skill or revising existing skill documentation in this repository.
Why use it?
It helps skill authors produce instructions that are easier to find, understand, and maintain.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions Codex; $skill-name invocation.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is icon_small: "../assets/small-logo.svg".

Good fit Use it when creating a new skill or revising existing skill documentation in this repository.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/tomkrikorian/visionOSAgents
agentmods
npx agentmods add skills/tomkrikorian/visionosagents/tkr-skill-writer

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for tkr-skill-writer

README.md
[![agentmods](https://agentmods.dev/badge/skills/tomkrikorian/visionosagents/tkr-skill-writer/github.svg)](https://agentmods.dev/skills/tomkrikorian/visionosagents/tkr-skill-writer)
Your own site
<a href="https://agentmods.dev/skills/tomkrikorian/visionosagents/tkr-skill-writer"><img src="https://agentmods.dev/badge/skills/tomkrikorian/visionosagents/tkr-skill-writer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for tkr-skill-writer

Your own site · 80×15
<a href="https://agentmods.dev/skills/tomkrikorian/visionosagents/tkr-skill-writer"><img src="https://agentmods.dev/badge/skills/tomkrikorian/visionosagents/tkr-skill-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,273 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00037 $0.01273
Opus 5.5 $0.00015 $0.00509
Sonnet 5.5 $0.00007 $0.00255
Haiku 4.5 $0.00004 $0.00127

Measured 2mo ago against content hash d967094167c9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tkr-skill-writer 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 2mo 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.

skills/tkr-skill-writer/SKILL.md · 177 lines

How it starts

The opening of the file, as written. The whole thing — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TKR Skill Writer

Description and Goals

This skill provides guidelines and templates for creating well-structured skills that follow consistent patterns in this repository while staying aligned with the current Codex skill guide. Skills should be clear, discoverable, and provide actionable guidance for developers.

Goals

  • Standardize skill structure across all skills in the repository
  • Ensure skills are discoverable and easy to navigate
  • Provide clear "when to use" guidance for each skill
  • Maintain consistent reference file organization
  • Keep repo conventions separate from actual Codex requirements
  • Include optional Codex metadata when it improves discovery and presentation
  • Enable efficient skill creation and maintenance

What This Skill Should Do

When creating or updating a skill, this skill guides you to:

  1. Start from the official minimum:

    • A skill folder with a SKILL.md file
    • Frontmatter with name and description
    • Instructions that explain exactly when the skill should trigger
  2. Apply this repo's preferred structure:

    • Description and Goals
    • What This Skill Should Do
    • Information About the Skill (with subcategories)
  3. Create reference files that are:

    • One level deep from SKILL.md (e.g., references/filename.md)
    • Use relative paths from the skill root
    • Avoid deeply nested reference chains
  4. Organize component/system references in tables with:

    • Component/System name as a clickable link: [ComponentName](references/componentname.md)
    • "When to Use" descriptions that clearly explain when to load each reference
  5. Add optional metadata when useful:

    • Create agents/openai.yaml for UI metadata in the Codex app
    • Set interface.display_name, short_description, icon_small, icon_large, and brand_color
    • Add interface.default_prompt only when a starter prompt will improve skill discoverability or invocation clarity
    • Add policy or dependencies only when the skill genuinely needs them

Read the full file on GitHub · 177 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2mo ago First seen · 177 lines · 37 tokens per session scan A d967094167c9

Subscribe to this mod's changes

tkr-skill-writer is a skill published in the GitHub repository tomkrikorian/visionOSAgents (66 stars, last pushed 4mo ago), licensed MIT. It adds 37 tokens to every session and 1,273 once invoked, about $0.0001 per session on Opus 5.5. 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.

Related

tkr-skill-writer compared with skills from other repositories

tkr-skill-writer next to 6 skills from other repositories
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