p6-func-regression

p6-func-regression is a command for Claude Code from jonase47/ccpr. It costs 0 tokens per session (1,139 once invoked), scanned A, original, MIT.

A regression-testing command that runs existing tests against areas affected by recent changes. Regression testing checks whether previously working functionality still works.

In plain words
What is it for?
Use it after a sprint or code change to test affected areas, record failures, and link each regression to a likely change.
Why use it?
It helps identify breakage introduced by new code without expanding the test suite.

Command for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: reads .claude/ paths.

Good fit Use it after a sprint or code change to test affected areas, record failures, and link each regression to a likely change.

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Install with agentmods
npx agentmods add commands/jonase47/ccpr/p6-func-regression
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.

Clone the repo
git clone --depth 1 https://github.com/jonase47/ccpr

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,139 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 $0.00000 $0.01139
Opus 5.5 $0.00000 $0.00456
Sonnet 5.5 $0.00000 $0.00228
Haiku 4.5 $0.00000 $0.00114

Measured 27d ago against content hash 65e27dcd8e0e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

p6-func-regression 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 27d 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.

commands/p6-func-regression.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/p6-func-regression – Run Regression Tests

Ensures that existing functionality has not been broken by new changes.

Argument: $ARGUMENTS = [area/sprint]

If provided: Focus regression on the specified area. If not provided: Test all areas affected by the latest changes.

Prerequisites

  • Existing automated tests present
  • SPRINT.md with latest changes

Agent

  • Type: qa-tester
  • Model: sonnet

Context (Orchestrator prepares)

The qa-tester agent has no Bash (agents/qa-tester.md) — it cannot run the suite itself. The orchestrator runs it first and hands the agent the result to analyze:

  • From SPRINT.md: Which features/modules were changed most recently
  • From tests/: Existing test files (file names + test case overview only)
  • Test-run output: run ~/.claude/scripts/run-tests.sh [area] [projectdir] scoped to the areas affected by recent changes (or the full suite if $ARGUMENTS was not given) and capture its JSON output — this is the agent's sole source for pass/fail counts below

Prompt Template

Goal: Analyze the results below – identify whether recent changes have broken existing functionality. Every number in your report must be transcribed from the provided results, never invented or estimated.

Recent Changes: [inline from SPRINT.md]

Results (already produced by the orchestrator, via scripts/run-tests.sh): [inline JSON: framework, summary.total/passed/failed, failures[]]

No-summary fallback: if the results carry no summary field (run-tests.sh's npm test path returns {"framework":"npm-test","raw_output":…}, and an undetected framework returns {"framework":"unknown","error":…}) — do not produce any pass/fail count. Mark every row "Manually Verified" / "No parseable automated result" instead, and say so explicitly in the summary.

Output Format:

# Test Area Total Tests Passed Failed Regressions
(Total/Passed/Failed transcribed from the results' summary — never estimated. No summary
present → "Manually Verified" / "No parseable automated result" per the fallback above, not a
number)

New regressions (if any, derived from the failures[] entries):

# Regression Affected Feature Suspected Cause

Constraints:

  • Analyze the provided results ONLY — no new test files, no independent suite execution
  • Focus on areas affected by recent changes
  • Assign each regression clearly to a change

Read the full file on GitHub · 106 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. 27d ago Changed · +18 lines 65e27dcd8e0e
  2. 1mo ago Changed c27c549c69e2
  3. 1mo ago First seen · 88 lines · 0 tokens per session scan A 373ca260dd23

Subscribe to this mod's changes

p6-func-regression is a command published in the GitHub repository jonase47/ccpr (1 stars, last pushed 27d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,139 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 2026-09-03.