agentmods.dev

axum-harness: Skill for Claude Code

.agents/skills/skill-authoring/SKILL.md

skill-authoring is a skill for Claude Code, Codex from openclosed-org/axum-harness. It costs 44 tokens per session (242 once invoked), scanned A, original, Apache-2.0.

A top-level planning process for work that crosses code, documentation, tooling, or agent-system boundaries. It maps affected paths, routes work to the right specialists, and combines their results.

In plain words
What is it for?
Use it for multi-part repository changes involving schemas, services, servers, workers, applications, agent instructions, or control-plane tooling.
Why use it?
It prevents cross-area changes from bypassing ownership rules or being done in the wrong dependency order.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

This is openclosed-org/axum-harness's own configuration. It tells Claude Code and Codex how to work on axum-harness itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything axum-harness configures →

not rated 51repo 5mo ago A scan 44 tokens original Apache-2.0
View source ↗ openclosed-org/axum-harness
Reuse

Borrowing it

Nothing to install: this file belongs to openclosed-org/axum-harness. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/openclosed-org/axum-harness/main/.agents/skills/skill-authoring/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/openclosed-org/axum-harness

Made for: Claude Code, 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 skill-authoring

README.md
[![agentmods](https://agentmods.dev/badge/skills/openclosed-org/axum-harness/skill-authoring/github.svg)](https://agentmods.dev/skills/openclosed-org/axum-harness/skill-authoring)
Your own site
<a href="https://agentmods.dev/skills/openclosed-org/axum-harness/skill-authoring"><img src="https://agentmods.dev/badge/skills/openclosed-org/axum-harness/skill-authoring/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 skill-authoring

Your own site · 80×15
<a href="https://agentmods.dev/skills/openclosed-org/axum-harness/skill-authoring"><img src="https://agentmods.dev/badge/skills/openclosed-org/axum-harness/skill-authoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 242 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 $0.00044 $0.00242
Opus 5.5 $0.00018 $0.00097
Sonnet 5.5 $0.00009 $0.00048
Haiku 4.5 $0.00004 $0.00024

Measured 2mo ago against content hash 01a12c5154b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skill-authoring 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.

.agents/skills/skill-authoring/SKILL.md · 33 lines

What it actually says

Skill Authoring

Use this skill for repository skill changes.

Read agent/skill-authoring.md before editing skills.

Rules

  1. Decide whether the skill is an ownership skill or workflow skill.
  2. Keep SKILL.md focused and short.
  3. Make the description a trigger interface with Use when language.
  4. Put detailed reference material in adjacent files.
  5. Do not duplicate AGENTS.md, north-star.md, or accepted ADRs.
  6. Do not write target-state claims as current behavior.
  7. Ensure workflow skills defer to ownership boundaries.

Review Checklist

  1. The skill has one clear reason to exist.
  2. The trigger description is specific.
  3. Writable and forbidden paths are clear when relevant.
  4. Evidence terms are precise.
  5. References are one level deep where possible.
  6. No generated or target-state path is treated as current executable behavior.
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 · 33 lines · 44 tokens per session scan A 01a12c5154b7

Subscribe to this mod's changes

skill-authoring is a skill published in the GitHub repository openclosed-org/axum-harness (51 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 44 tokens to every session and 242 once invoked, about $0.0002 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.

Building agentsai-agentsaxum-frameworkdistributed-systemsmicroservicesplatform-engineering
Related

skill-authoring compared with skills from other repositories

skill-authoring next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
skill-authoringopenclosed-org/axum-harnessSkill515mo agoApache-2.0A44Claude Code, Codex
architecture-paradigm-microservicesathola/claude-night-marketSkill348yesterdayMITA33Claude Code
microservices-expertpersonamanagmentlayer/pclSkill4411d agoApache-2.0A52Claude Code
architecture-governancebeyondnetcode/evolith_arch32Skill25d agoMITA76Claude Code, Codex
microservices-patternsbooklib-ai/booklibSkill407mo agoMITA131Claude Code, Codex
distributed-feasibility-checkerbookforge-ai/bookforge-skillsSkill426mo agoCC-BY-SA-4.0A86Claude Code
contract-testingproffesor-for-testing/agentic-qeSkill525yesterdayMITA35Claude Code