grill-me

grill-me is a skill for Claude Code, Codex from joshuawheelock/grill-me. It costs 93 tokens per session (795 once invoked), scanned A, original, MIT.

A read-only codebase quiz that asks developers one question at a time about how the current software works and grades their answers against the implementation.

In plain words
What is it for?
Use it to test understanding of control flow, data movement, state, system boundaries, design choices, and failure handling.
Why use it?
It reveals gaps between what a developer thinks the code does and what it actually does, without changing the repository.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the grill-me plugin — 1 skill shipped together

Good fit Use it to test understanding of control flow, data movement, state, system boundaries, design choices, and failure handling.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/joshuawheelock/grill-me/grill-me
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 joshuawheelock/grill-me --skill grill-me
Clone the repo
git clone --depth 1 https://github.com/joshuawheelock/grill-me

Made for: Claude Code, Codex.

Or install grill-me, the plugin that ships this one along with the rest of its 1 skill.

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-me

README.md
[![agentmods](https://agentmods.dev/badge/skills/joshuawheelock/grill-me/grill-me/github.svg)](https://agentmods.dev/skills/joshuawheelock/grill-me/grill-me)
Your own site
<a href="https://agentmods.dev/skills/joshuawheelock/grill-me/grill-me"><img src="https://agentmods.dev/badge/skills/joshuawheelock/grill-me/grill-me/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 grill-me

Your own site · 80×15
<a href="https://agentmods.dev/skills/joshuawheelock/grill-me/grill-me"><img src="https://agentmods.dev/badge/skills/joshuawheelock/grill-me/grill-me.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 795 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 $0.00093 $0.00795
Opus 5 $0.00046 $0.00398
Sonnet 5 $0.00019 $0.00159
Haiku 4.5 $0.00009 $0.00080

Measured 12d ago against content hash d2f6d29c366c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

grill-me 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 12d 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-me/SKILL.md · 33 lines

How it starts

The opening of the file, as written. The whole thing — 33 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Grill Me

Test the developer's working mental model of the codebase. Prefer questions about behavior, control flow, data flow, state, boundaries, tradeoffs, and failure handling over syntax or trivia.

Run the quiz

  1. Treat the current worktree as authoritative and keep the quiz read-only.
  2. Locate this skill's directory and select its native bin/pick-quiz-file-<os>-<arch> executable, adding .exe on Windows. Use windows, darwin, or linux for the OS and map x86_64 to amd64 and aarch64 to arm64. Run it with the current repository root. It prints one random repository-relative path and requires no language runtime. For later questions, pass every previously selected path as a separate --exclude-path argument. Do not enumerate the repository in model-visible output before running the helper.
  3. Read the selected file or a relevant bounded section. Choose a substantive behavior or symbol, then use exact-symbol searches to inspect only the callers, callees, tests, configuration, and downstream effects needed to establish the answer. Treat the selected file as a starting point, not the complete source of truth.
  4. Rerun the helper when a selected file cannot support a useful question. After three unproductive selections—or when the current platform is unsupported, executable permission is denied, or no viable candidates are available—fall back to inspecting enough of the repository to build a private pool of viable subjects from distinct components. Exclude generated code, vendored dependencies, and facts that amount only to recalling a name or line number.
  5. Track selected paths and question subjects in the current conversation. Sample without replacement until the available subjects are exhausted.
  6. Form one focused, self-contained question about how that part of the code works. Ask for the mechanism, consequence, or rationale encoded in the implementation. Keep the answer and supporting evidence private. Do not ask multiple independent questions in one turn.
  7. Wait for the user's response. Do not provide hints unless the user explicitly asks for one; a hint does not resolve the question.
  8. Grade the response semantically against the inspected code. Accept different terminology when the explanation preserves the actual behavior and important consequences. Do not require details the question did not ask for.
  9. Resolve the question using exactly one of these outcomes:
    • If correct, reply Correct. Would you like another question?
    • If incorrect, begin with Incorrect. Then concisely explain the actual behavior and cite the relevant local files or symbols. End with Would you like another question?
  10. If the user continues, repeat from file selection and ask exactly one new question. If the user challenges the grade, re-open the relevant implementation, address the challenge, and correct the grade when warranted before offering to continue.

Read the full file on GitHub · 33 lines

Files

What ships with it

8 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. 12d ago First seen · 33 lines · 93 tokens per session scan A d2f6d29c366c

Subscribe to this mod's changes

grill-me is a skill published in the GitHub repository joshuawheelock/grill-me (6 stars, last pushed 21d ago), licensed MIT. It adds 93 tokens to every session and 795 once invoked, about $0.0005 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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