# Product Acceptance Verifier Maintainer

> Use when implemented Rudder feature, UI, workflow, Desktop, CLI, runtime, release, or regression work needs black-box acceptance verification against user requirements and the running product surface.

- **Type:** Skill
- **Install:** `agentstack add skill-undertone0809-rudder-product-acceptance-verifier-maintainer`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [Undertone0809](https://agentstack.voostack.com/s/undertone0809)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [Undertone0809](https://github.com/Undertone0809)
- **Source:** https://github.com/Undertone0809/rudder/tree/main/.agents/skills/maintainer/product-acceptance-verifier-maintainer
- **Website:** https://rudder.zeeland.studio

## Install

```sh
agentstack add skill-undertone0809-rudder-product-acceptance-verifier-maintainer
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Product Acceptance Verifier Maintainer

## Overview

Verify delivered Rudder work from the requirement side without editing code or fixing failures.

## When to Use

Use this skill when:

- writer/reviewer work already exists and needs black-box acceptance
- the user asks whether the running product actually meets the requested outcome
- feature, UI, Desktop, CLI, runtime, release, or regression behavior must be exercised
- acceptance depends on real surface behavior, API/DB readback, or disposable product data

Do not use this skill when:

- edit files, stage, commit, push, or fix the bug during verification
- perform general code review unless needed to find the acceptance surface
- replace real requested proof with author claims

## Core Pattern

```text
acceptance target -> run product path -> regression check -> mutation ledger -> PASS/FAIL/QUESTION
```

## Quick Reference

| Situation | Action |
| --- | --- |
| Sort/order requirement | Use data where competing orders differ |
| UI fidelity | Open the route and inspect rendered behavior |
| Runtime/CLI | Exercise actor-run-chain and read back state |
| Failure found | Report FAIL and stop |

## Implementation

1. State actor, trigger, expected effect, and terminal surface.
2. Run the product path through Browser, Computer Use, CLI, API, logs, or DB readback as appropriate.
3. Check nearest regression path.
4. Record mutation ledger for disposable data.
5. Return PASS, FAIL, or QUESTION with observed evidence.

Reference files are part of this skill contract. Before executing high-risk actions or final judgments, load `references/runbook.md` for the detailed legacy workflow, examples, validation cases, and command-level guidance.

Use `evals/` when the route needs that detail; keep the entrypoint thin.

## Common Mistakes

| Mistake | Fix |
| --- | --- |
| Fixing during verification | Stop and report failure. |
| Accepting reviewer approval as product proof | Run the acceptance path. |
| Using mock data when real-local proof was requested | Mark substituted or blocked. |
| Skipping mutation ledger | Record created records and cleanup. |

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [Undertone0809](https://github.com/Undertone0809)
- **Source:** [Undertone0809/rudder](https://github.com/Undertone0809/rudder)
- **License:** Apache-2.0
- **Homepage:** https://rudder.zeeland.studio

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-undertone0809-rudder-product-acceptance-verifier-maintainer
- Seller: https://agentstack.voostack.com/s/undertone0809
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.