ask-matt

ask-matt is a skill for Claude Code, Codex from fellipeutaka/leon. It costs 22 tokens per session (2,516 once invoked), scanned A, a copy of ask-matt, MIT.

A guide for choosing the right skill or work process from the skills in a repository. It routes a task from an idea through planning, prototyping when needed, and delivery.

In plain words
What is it for?
Use it to find a suitable skill for shaping an idea, working with an existing codebase, answering questions with a prototype, or moving work toward release.
Why use it?
It helps when you know what you want to do but do not know which available workflow fits. It also explains when to use related steps such as documenting requirements or testing a prototype.

Skill for Claude CodeCodex

Written for Claude Code and Codex: disable-model-invocation in frontmatter, but also agents/openai.yaml present. Also seen: mentions subagents; mentions AGENTS.md.

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/fellipeutaka/leon/ask-matt
Any agent
npx skills add fellipeutaka/leon --skill ask-matt
Clone the repo
git clone --depth 1 https://github.com/fellipeutaka/leon

Made for: Claude Code, Codex.

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 ask-matt

README.md
[![agentmods](https://agentmods.dev/badge/skills/fellipeutaka/leon/ask-matt.svg)](https://agentmods.dev/skills/fellipeutaka/leon/ask-matt)
Your own site
<a href="https://agentmods.dev/skills/fellipeutaka/leon/ask-matt"><img src="https://agentmods.dev/badge/skills/fellipeutaka/leon/ask-matt.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,516 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 88% copy Near-identical to another mod 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 $0.00022 $0.02516
Opus 5 $0.00011 $0.01258
Sonnet 5 $0.00004 $0.00503
Haiku 4.5 $0.00002 $0.00252

Measured 2d ago against content hash 56835778f2bc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ask-matt 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 2d 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.

Origin

This is a copy

88% identical to ask-matt — 214 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/ask-matt/SKILL.md · 207 lines

How it starts

The opening of the file, as written. The whole thing — 207 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ask Matt

You don't remember every skill, so ask.

A flow is a path through the skills. Most paths run along one main flow, and two on-ramps merge onto it. Everything else is standalone, or a vocabulary layer that runs underneath. Delivery tooling, including stacked PRs, sits underneath the main flow rather than replacing it.

The main flow: idea → ship

The route most work travels. You have an idea and want it built.

  1. /grill-with-docs sharpens the idea by interview. Start here whenever you are working in a working directory: it's stateful, retaining what it learns in CONTEXT.md and ADRs. (No working directory? Use /grill-me instead, covered under Standalone. Both run the same /grilling primitive; grill-with-docs is the one that leaves a paper trail.)

  2. Branch: can you settle every question in conversation? If a question needs a runnable answer (state, business logic, a UI you have to see), detour through a prototype, bridged by /handoff in both directions:

    • /handoff out, then open a fresh session against that file;
    • /prototype to answer the question with throwaway code;
    • /handoff back what you learned, and reference it from the original idea thread.
  3. Branch: is this a multi-session build?

    • Yes/to-spec (turn the thread into a spec), then /to-tickets to split it into tracer-bullet tickets, each declaring its blocking edges. On a local tracker that's one file per ticket under .scratch/<feature>/issues/, worked blockers-first by hand; on a real tracker the edges become native blocking links, so any ticket whose blockers are done can be grabbed: kick off /implement per ticket, clearing context between each one. Each ticket is self-contained, so the last one's context is disposable.
    • No/implement right here, in the same context window.

    /implement is the user-invoked orchestrator. For non-trivial tickets it dispatches one isolated implementer subagent, which drives TDD at the agreed seams; the orchestrator then calls the Skill tool with "code-review" against the fixed point before delivery. Reach for /tdd on its own when you just want to build a concrete behaviour test-first without a full spec, and /code-review on its own whenever you want to review a branch or PR against a fixed point.

Read the full file on GitHub · 207 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. 2d ago Changed · +113 lines 56835778f2bc
  2. 5d ago First seen · 94 lines · 22 tokens per session scan A 0af435250cc4

Subscribe to this mod's changes

ask-matt is a skill published in the GitHub repository fellipeutaka/leon (5 stars, last pushed 2d ago), licensed MIT. It adds 22 tokens to every session and 2,516 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to ask-matt, differing in 214 lines, and is treated as a copy.

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