agent-harness: Skill for Claude Code

.agent/SKILLS/saas-regression-guard/SKILL.md

saas-regression-guard is a skill for Claude Code, Codex from codejunkie99/agent-harness. It costs 0 tokens per session (122 once invoked), scanned A, original, no licence file.

A testing aid for software-as-a-service products. It adds tests around product areas that have changed.

In plain words
What is it for?
Use it after changing a product area to expand its test coverage and reduce the chance of related breakage.
Why use it?
It helps catch regressions, where a new change accidentally breaks something that worked before.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

This is codejunkie99/agent-harness's own configuration. It tells Claude Code and Codex how to work on agent-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 agent-harness configures →

Reuse

Borrowing it

Nothing to install: this file belongs to codejunkie99/agent-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/codejunkie99/agent-harness/main/.agent/SKILLS/saas-regression-guard/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/codejunkie99/agent-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 saas-regression-guard

README.md
[![agentmods](https://agentmods.dev/badge/skills/codejunkie99/agent-harness/saas-regression-guard/github.svg)](https://agentmods.dev/skills/codejunkie99/agent-harness/saas-regression-guard)
Your own site
<a href="https://agentmods.dev/skills/codejunkie99/agent-harness/saas-regression-guard"><img src="https://agentmods.dev/badge/skills/codejunkie99/agent-harness/saas-regression-guard/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 saas-regression-guard

Your own site · 80×15
<a href="https://agentmods.dev/skills/codejunkie99/agent-harness/saas-regression-guard"><img src="https://agentmods.dev/badge/skills/codejunkie99/agent-harness/saas-regression-guard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 122 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 unknown 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 $0.00000 $0.00122
Opus 5.5 $0.00000 $0.00049
Sonnet 5.5 $0.00000 $0.00024
Haiku 4.5 $0.00000 $0.00012

Measured 2mo ago against content hash 00992274bef0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

saas-regression-guard 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.

.agent/SKILLS/saas-regression-guard/SKILL.md · 16 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 16 lines · 0 tokens per session scan A 00992274bef0

Subscribe to this mod's changes

saas-regression-guard is a skill published in the GitHub repository codejunkie99/agent-harness (14 stars, last pushed 5mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 122 tokens. 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 2026-08-31.

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