axum-harness: Skill for Claude Code

.agents/skills/platform-ops-agent/SKILL.md

platform-ops-agent is a skill for Claude Code, Codex from openclosed-org/axum-harness. It costs 90 tokens per session (1,040 once invoked), scanned A, original, Apache-2.0.

A set of instructions for maintaining platform models, schemas, infrastructure definitions, generators, validators, and operations runbooks.

In plain words
What is it for?
Use it when changing platform metadata, system topology, deployment definitions, validation tools, infrastructure declarations, GitOps delivery, secrets structure, or operational procedures.
Why use it?
It keeps platform changes organized by updating the source model first and regenerating dependent outputs instead of editing generated files directly.

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 →

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/platform-ops-agent/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 platform-ops-agent

README.md
[![agentmods](https://agentmods.dev/badge/skills/openclosed-org/axum-harness/platform-ops-agent.svg)](https://agentmods.dev/skills/openclosed-org/axum-harness/platform-ops-agent)
Your own site
<a href="https://agentmods.dev/skills/openclosed-org/axum-harness/platform-ops-agent"><img src="https://agentmods.dev/badge/skills/openclosed-org/axum-harness/platform-ops-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,040 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 $0.00090 $0.01040
Opus 5 $0.00045 $0.00520
Sonnet 5 $0.00018 $0.00208
Haiku 4.5 $0.00009 $0.00104

Measured 8d ago against content hash c25be8af3411, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

platform-ops-agent 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 8d 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/platform-ops-agent/SKILL.md · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Platform Ops Agent

You maintain the platform control plane — schema, platform-level model, topology, generators, validators, and operations runbooks.


Responsibility

  1. Own platform/model/** — platform-level declared metadata index
  2. Own platform/schema/** — JSON schema definitions
  3. Own platform/generators/** — code/manifest generators
  4. Own platform/validators/** — platform validation tools
  5. Own infra/** — infrastructure declarations and delivery scaffolding
  6. Own ops/** — operations runbooks, drills, migrations
  7. Own docs/platform-model/** and docs/operations/**
  8. Enforce: modify model/source first, then regenerate, never hand-edit generated

Read Before Editing

AGENTS.md                                    → global protocol
agent/codemap.yml                            → module constraints (platform-model + infra)
.agents/skills/backend-engineering/SKILL.md  → backend quality kernel for backend-facing platform changes
platform/model/README.md                     → platform vs service boundary
platform/schema/**                           → current schema state
platform/model/**                            → current platform model state

Writable Directories

Directory Scope
platform/model/** Platform-level metadata, defaults, topology, workflow, deployables
platform/schema/** JSON schema definitions
platform/generators/** Generator source code
platform/validators/** Validator source code
infra/** (base/, not rendered/) Infrastructure declarations
ops/** Operations runbooks, scripts, drills
docs/platform-model/** Platform model documentation
docs/operations/** Operations documentation

Forbidden Directories

Directory Reason
platform/catalog/** Generated catalog (read-only)
infra/kubernetes/rendered/** Generated manifests (read-only)
docs/generated/** Generated docs (read-only)
packages/sdk/** Generated SDK (read-only)
services/*/src/** Service implementation owned by service-agent
services/*/model.yaml Service-local semantics owned by service-agent
servers/** Owned by server-agent
workers/** Owned by worker-agent

Read the full file on GitHub · 129 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. 8d ago First seen · 129 lines · 90 tokens per session scan A c25be8af3411

Subscribe to this mod's changes

platform-ops-agent is a skill published in the GitHub repository openclosed-org/axum-harness (49 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 90 tokens to every session and 1,040 once invoked, about $0.0005 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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