oxygen: Skill for Claude Code

.claude/skills/oxy-run-and-verify/SKILL.md

oxy-run-and-verify is a skill for Claude Code from oxy-hq/oxygen. It costs 211 tokens per session (3,818 once invoked), scanned A, original, Apache-2.0.

A local verification guide for starting Oxy, signing in as a test user, and checking a change in the real product through a browser. It covers one-off checks rather than saved regression tests.

In plain words
What is it for?
Use it to launch the local stack, seed demo data, sign in as different roles, inspect pages, click through flows, take screenshots, and reproduce UI issues.
Why use it?
It gives a repeatable way to see whether a UI or API change works in a running environment without manually configuring servers and accounts.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions Claude Code.

This is oxy-hq/oxygen's own configuration. It tells Claude Code how to work on oxygen 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 oxygen configures →

Reuse

Borrowing it

Nothing to install: this file belongs to oxy-hq/oxygen. 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/oxy-hq/oxygen/main/.claude/skills/oxy-run-and-verify/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/oxy-hq/oxygen

Made for: Claude Code.

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 oxy-run-and-verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/oxy-hq/oxygen/oxy-run-and-verify/github.svg)](https://agentmods.dev/skills/oxy-hq/oxygen/oxy-run-and-verify)
Your own site
<a href="https://agentmods.dev/skills/oxy-hq/oxygen/oxy-run-and-verify"><img src="https://agentmods.dev/badge/skills/oxy-hq/oxygen/oxy-run-and-verify/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 oxy-run-and-verify

Your own site · 80×15
<a href="https://agentmods.dev/skills/oxy-hq/oxygen/oxy-run-and-verify"><img src="https://agentmods.dev/badge/skills/oxy-hq/oxygen/oxy-run-and-verify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 211 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,818 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00211 $0.03818
Opus 5.5 $0.00084 $0.01527
Sonnet 5.5 $0.00042 $0.00764
Haiku 4.5 $0.00021 $0.00382

Measured 2d ago against content hash 01f27c7c4704, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

oxy-run-and-verify scanned grade A with 1 finding 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 2d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| `just up --no-frontend` | API only, for `curl` checks |
.claude/skills/oxy-run-and-verify/SKILL.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Run the stack, sign in as a persona, verify

The loop is always the same, and it never involves --local, hand-started servers, or env edits:

  1. just up — builds, starts, seeds, serves. Idempotent: re-run it after any change.
  2. Read .oxy-dev/state.json — URLs, pids, log paths, personas, seeded workspace ids.
  3. browser_navigate to http://127.0.0.1:5173/dev-login?as=<persona>&next=<path> — that one navigation is the whole sign-in.
  4. Look, click, screenshot. Change code. Back to 1 (or nothing, for web-app edits — Vite hot-reloads).

Here vs agentic-browser-test: this skill is for looking at a change once. A regression you want kept belongs in a committed flow under web-app/tests/agentic/flows/; invoke that skill for it.

Running it from Claude Code

  • Run just up / just status / just down with the Bash sandbox disabled: they need the Docker socket, ps, and to bind ports. Sandboxed, the script exits at once naming the problem.
  • A cold just up can outlast the 10-minute Bash timeout (a ~7 min first build, image pulls, then the seed compiling ~10 workspaces). Run it with run_in_background: true and wait for the completion notification. A warm run is mostly the seed step.
  • The exit code is the contract. On failure the script prints the last 40 log lines and the log path, so read those before retrying anything.

Commands

Command Does
just up cargo build -p oxy-server → oxy start --enterprise (Docker Postgres :15432, API :3000, no-auth internal API 127.0.0.1:3001) → oxy seed --workspace-path ./examples --llm-keys (compiles + promotes every seeded workspace; copies env LLM keys into their secrets) → Vite on 127.0.0.1:5173 → writes state.json and prints three ready sign-in links
just up --no-build reuse the existing binary ($OXY_BIN, else target/debug/oxy)
just up --no-seed skip the seed (faster when data and compiled revisions are already there)
just up --no-frontend API only, for curl checks
just up --restart restart backend + Vite even when healthy (after editing .env)
just up --clean wipe the database volumes first (oxy start --clean)
just status pids, /api/ready, Vite + its /api proxy, containers, current log paths. Exits 1 when not serving
just down / just down --db stop backend + Vite / also docker stop the Postgres + ClickHouse containers

Read the full file on GitHub · 149 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. 2d ago First seen · 149 lines · 211 tokens per session scan A 01f27c7c4704

Subscribe to this mod's changes

oxy-run-and-verify is a skill published in the GitHub repository oxy-hq/oxygen (203 stars, last pushed yesterday), licensed Apache-2.0. It adds 211 tokens to every session and 3,818 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-14.

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