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.
npx skills add oxy-hq/oxygen --skill oxy-evalsgit clone --depth 1 https://github.com/oxy-hq/oxygenWrote 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.
[](https://agentmods.dev/skills/oxy-hq/oxygen/oxy-evals)<a href="https://agentmods.dev/skills/oxy-hq/oxygen/oxy-evals"><img src="https://agentmods.dev/badge/skills/oxy-hq/oxygen/oxy-evals/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.
<a href="https://agentmods.dev/skills/oxy-hq/oxygen/oxy-evals"><img src="https://agentmods.dev/badge/skills/oxy-hq/oxygen/oxy-evals.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00193 | $0.04758 |
| Opus 5.5 | $0.00077 | $0.01903 |
| Sonnet 5.5 | $0.00039 | $0.00952 |
| Haiku 4.5 | $0.00019 | $0.00476 |
Grade A, and why
oxy-evals 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- oxy-evals — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 363 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Oxy evals: draft, run, diagnose, repair
An Oxy eval is a .test.yml file: a list of prompts, each with the answer a correct agent
gives. oxy test runs the target agent on every prompt several times and asks an LLM judge
whether each answer carries the expected facts.
Drafting the tests and repairing the agent are one loop:
- Draft cases and their
expectedanswers from evidence. - Run them and read the results.
- Diagnose each failure and repair the agent until it passes reliably.
The hard rule: the expected answer is the specification. Never weaken a test to make it
pass. Don't loosen expected to match what the agent said, delete or skip a failing case, or
rewrite a prompt to dodge the failure. If a test itself is wrong (a bad expected value, an
ambiguous prompt), say so, show the evidence, and let the user decide. That's a different
change from a repair, and you don't make it silently.
Reference docs (field tables, CI usage): https://www.oxygen-hq.com/docs/guide/build/test-evaluate/testing
What can be tested
- Only
.agentic.ymlagents.oxy testrejects any other target, including classic.agent.ymlagents (that runtime was removed). Inlinetests:blocks inside agent or automation files are gone too. A.test.ymlfile is the only entry point. - Only the final answer text is judged. The judge sees the question,
expected, and the agent's answer. It doesn't see the SQL, the tool calls, or the rows. tool:on a case is accepted but not enforced. It has no effect on pass/fail. Don't rely on it to assert that the agent used a particular path.
The .test.yml format
name: Sales performance # optional display name
target: agents/sales.agentic.yml # path from the project root; see "target" below
settings:
runs: 3 # times each case runs (default 3)
concurrency: 5 # agent runs in flight at once (default 5)
judge_model: judge # a model `name:` from config.yml (default: first model there)
cases:
- name: total-revenue-2025 # optional, but always add it: it makes --case usable
prompt: What was total revenue across all stores in 2025?
expected: Total revenue across all stores in 2025 was approximately $6.7 billion.
tags: [revenue, critical]
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.
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.
- yesterday First seen · 363 lines · 193 tokens per session scan A 384bb5983558
oxy-evals is a skill published in the GitHub repository oxy-hq/oxygen (203 stars, last pushed yesterday), licensed Apache-2.0. It adds 193 tokens to every session and 4,758 once invoked, about $0.0008 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 2026-10-16.
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