grill-po

grill-po is a skill for Claude Code from t1/tdder. It costs 82 tokens per session (1,034 once invoked), scanned A, original, Apache-2.0.

A guided requirements interview for a product owner or another decision-maker. It examines a feature against the existing domain model, meaning the business concepts and rules already represented in the project.

In plain words
What is it for?
Use it to clarify a feature, inspect related code and documentation, ask design questions one at a time, and update Gherkin scenarios or context files as decisions become clear.
Why use it?
It finds unclear terms, missing decisions, and conflicts before implementation. It can record settled decisions in feature documents and domain-model documentation.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions AGENTS.md.

Part of the tdder plugin — 14 skills, 2 commands, 6 agents, 1 hook shipped together

Good fit Use it to clarify a feature, inspect related code and documentation, ask design questions one at a time, and update Gherkin scenarios or context files as decisions become clear.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/t1/tdder/grill-po
View source ↗ t1/tdder
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.

Any agent
npx skills add t1/tdder --skill grill-po
Clone the repo
git clone --depth 1 https://github.com/t1/tdder

Made for: Claude Code.

Or install tdder, the plugin that ships this one along with the rest of its 14 skills, 2 commands, 6 agents, 1 hook.

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 grill-po

README.md
[![agentmods](https://agentmods.dev/badge/skills/t1/tdder/grill-po.svg)](https://agentmods.dev/skills/t1/tdder/grill-po)
Your own site
<a href="https://agentmods.dev/skills/t1/tdder/grill-po"><img src="https://agentmods.dev/badge/skills/t1/tdder/grill-po.svg" alt="Measured on agentmods" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,034 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00082 $0.01034
Opus 5 $0.00041 $0.00517
Sonnet 5 $0.00016 $0.00207
Haiku 4.5 $0.00008 $0.00103

Measured 8d ago against content hash 3579a8ee878f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

grill-po 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 8d 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/grill-po/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Grill PO

Interview the user relentlessly about every aspect of their plan until you reach a shared understanding. Walk down each branch of the design tree, resolving dependencies between decisions one-by-one. For each question, provide your recommended answer.

Ask questions one at a time, waiting for feedback on each before continuing.

If a question can be answered by exploring the codebase, explore the codebase instead.

Domain Awareness

During codebase exploration, also look for existing documentation.

File Structure

Single-context repo:

/
├── bounded-context.md
├── docs/
│   └── features/
│       ├── place-order.feature
│       └── cancel-order.feature
└── src/

Multi-context mono-repo:

/
├── README.md                          ← contains "Bounded Contexts" section (context map)
├── AGENTS.md                          ← contains "Bounded Contexts" section (context map)
├── docs/
├── src/
│   ├── ordering/
│   │   ├── ordering-bounded-context.md
│   │   └── docs/features/             ← context-specific features
│   └── billing/
│       └── billing-bounded-context.md

Create files lazily — only when you have something to write.

Detecting the structure:

  • If a bounded-context.md exists at root → single context
  • If *-bounded-context.md files exist elsewhere → multi-context; read the "Bounded Contexts" section of README.md or AGENTS.md for the context map
  • If neither exists → create bounded-context.md lazily when the first term is resolved

When multiple contexts exist, infer which one the current topic relates to. If unclear, ask.

During the Session

Challenge against the glossary

When the user uses a term that conflicts with the existing language in the bounded-context file, call it out immediately. "Your glossary defines 'cancellation' as X, but you seem to mean Y — which is it?"

Also scan existing .feature files for terminology drift: if a scenario uses a term differently from the bounded-context file, surface it. "Your feature file says 'purchase' but the glossary defines that concept as 'order' — which should it be?"

Read the full file on GitHub · 115 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. 8d ago First seen · 115 lines · 82 tokens per session scan A 3579a8ee878f

Subscribe to this mod's changes

grill-po is a skill published in the GitHub repository t1/tdder (14 stars, last pushed 2d ago), licensed Apache-2.0. It adds 82 tokens to every session and 1,034 once invoked, about $0.0004 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 2026-08-30.

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