llms: Skill for Claude Code

.claude/skills/discovery/SKILL.md

discovery is a skill for Claude Code from matteocervelli/llms. It costs 68 tokens per session (1,345 once invoked), scanned A, original, MIT.

A structured way to check whether a product idea is worth building before committing to detailed planning or design.

In plain words
What is it for?
Use it to frame the problem, study competing products, assess feasibility, and make a go-or-no-go decision.
Why use it?
It helps expose unclear problems, weak evidence, technical limits, and business concerns before development time is spent.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths.

This is matteocervelli/llms's own configuration. It tells Claude Code how to work on llms itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything llms configures →

Reuse

Borrowing it

Nothing to install: this file belongs to matteocervelli/llms. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/matteocervelli/llms/main/.claude/skills/discovery/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/matteocervelli/llms

Made for: Claude Code.

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 discovery

README.md
[![agentmods](https://agentmods.dev/badge/skills/matteocervelli/llms/discovery.svg)](https://agentmods.dev/skills/matteocervelli/llms/discovery)
Your own site
<a href="https://agentmods.dev/skills/matteocervelli/llms/discovery"><img src="https://agentmods.dev/badge/skills/matteocervelli/llms/discovery.svg" alt="Measured on agentmods" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,345 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00068 $0.01345
Opus 5 $0.00034 $0.00673
Sonnet 5 $0.00014 $0.00269
Haiku 4.5 $0.00007 $0.00135

Measured 3d ago against content hash 4fff057a70ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

discovery 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 3d 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.

.claude/skills/discovery/SKILL.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Discovery — Phase 0 Validation Gate

Structured Discovery & Validation before committing to a feature. Prevents building unvalidated ideas by gating entry into the story and design pipeline with four sequential modes.

Usage

/discovery                   # Show overview of all 4 modes
/discovery problem           # Problem framing: who has it, how urgent, what evidence
/discovery competitive       # Competitive landscape: what exists, differentiators, moat
/discovery feasibility       # Feasibility: technical, economic, time constraints
/discovery checkpoint        # Go/no-go gate: 5-criteria verdict before /story create

Workflow

Step 1: Determine Mode

Parse $ARGUMENTS for explicit mode. If no arguments provided, show overview:

no args         → read templates/overview.md
problem         → read templates/problem/summary.md
competitive     → read templates/competitive/summary.md
feasibility     → read templates/feasibility/summary.md
checkpoint      → read templates/checkpoint/summary.md
<anything else> → show usage error + list valid modes + read templates/overview.md

Step 2: Present Guidance (Progressive Disclosure)

Level 1 — Summary (default, ~20 lines): Read and present the summary template. This is the entry point — frames the questions to answer.

Level 2 — Patterns (on request, ~60 lines): When the user asks for more depth, "show me patterns", "how do I score this", or "give me examples" — read the patterns template.

Level 3 — Full Analysis (on request): No template — dive into specific questions with the user based on context provided.

Step 3: Run Modes Sequentially

Recommended sequence: problemcompetitivefeasibilitycheckpoint

Each mode builds on the previous:

  • problem → frames who, what, and why
  • competitive → validates market gap
  • feasibility → validates buildability
  • checkpoint → synthesizes all three into a go/no-go verdict

You can run individual modes out of order when the user has already done partial research.

Read the full file on GitHub · 138 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. 3d ago First seen · 138 lines · 68 tokens per session scan A 4fff057a70ad

Subscribe to this mod's changes

discovery is a skill published in the GitHub repository matteocervelli/llms (25 stars, last pushed 3mo ago), licensed MIT. It adds 68 tokens to every session and 1,345 once invoked, about $0.0003 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 2026-09-03.

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