quality-baseline

quality-baseline is a skill for Claude Code, Codex from Railly/skills. It costs 64 tokens per session (625 once invoked), scanned A, original, MIT.

A read-only review of a code repository's quality, based on recorded evidence rather than a single score. It checks areas such as reliability, security, tests, performance, and technical debt.

In plain words
What is it for?
It is for establishing a reproducible starting point, finding and ranking quality gaps, and comparing the repository's condition over time.
Why use it?
It shows where a repository lacks visible safeguards or useful checks, while separating evidence from assumptions about controls that may exist elsewhere.

Skill for Claude CodeCodex

Part of the experimental plugin — 14 skills shipped together

Install

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.

agentmods
npx agentmods add skills/railly/skills/quality-baseline
Any agent
npx skills add Railly/skills --skill quality-baseline
Clone the repo
git clone --depth 1 https://github.com/Railly/skills

Made for: Claude Code, Codex.

Or install experimental, the plugin that ships this one along with the rest of its 14 skills.

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 quality-baseline

README.md
[![agentmods](https://agentmods.dev/badge/skills/railly/skills/quality-baseline.svg)](https://agentmods.dev/skills/railly/skills/quality-baseline)
Your own site
<a href="https://agentmods.dev/skills/railly/skills/quality-baseline"><img src="https://agentmods.dev/badge/skills/railly/skills/quality-baseline.svg" alt="Measured on agentmods" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 625 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00064 $0.00625
Opus 5 $0.00032 $0.00313
Sonnet 5 $0.00013 $0.00125
Haiku 4.5 $0.00006 $0.00063

Measured 5d ago against content hash 296873e91d39, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

quality-baseline 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 5d 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.

skills/.experimental/quality-baseline/SKILL.md · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Quality baseline

Build an evidence ledger, not a generic score. A missing checked-in control is a gap in visible repository evidence, not proof that no organization-level control exists.

1. Freeze repository identity

Record repository path, remote identity, HEAD, branch, working-tree state, stack, package manager, instruction files, CI workflows, and exact verification commands. Preserve unrelated changes.

Complete when: another reader can reproduce the inspected state and commands.

2. Map critical paths and controls

Trace the user-visible and operational paths whose failure would matter. For each path, map:

  • functional contracts and external specifications;
  • test layers and whether they exercise the real boundary;
  • latency, throughput, memory, or size observability;
  • timeout, retry, cancellation, cleanup, recovery, and overload behavior;
  • dependency, secret, trust-boundary, and release controls;
  • supported runtimes, operating systems, renderers, or protocol surfaces.

Use history, churn, and change coupling only as prioritization evidence. A large or frequently edited file is not a defect by itself.

Complete when: every critical path has an evidence-backed control map or an explicit verification gap.

3. Prove or reject findings

For every candidate gap, capture:

  • exact evidence and affected contract;
  • plausible failure and impact;
  • confidence and important unknowns;
  • smallest useful verification;
  • fix effort and regression risk.

Reject code-smell findings that do not connect to a failure, change-safety cost, measurable bottleneck, or violated repository rule. Reject optimization claims without a workload and measurable symptom. Reject "add tests" without naming what the test must detect.

Complete when: every retained finding has a verification story and every investigated rejection has a reason.

4. Rank pilot work

Rank by impact, evidence strength, verification cost, fix risk, and reversibility. Prefer one bounded pilot whose result can be measured. Route:

Read the full file on GitHub · 62 lines

Files

What ships with it

2 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.

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. 5d ago First seen · 62 lines · 64 tokens per session scan A 296873e91d39

Subscribe to this mod's changes

quality-baseline is a skill published in the GitHub repository Railly/skills (9 stars, last pushed 2d ago), licensed MIT. It adds 64 tokens to every session and 625 once invoked, about $0.0003 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 2026-08-31.

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