claude-sure-skill

A confidence gate for Claude Code — forces a root-cause + confidence check before it writes any code.

Invoke it with /sure whenever you want Claude to stop and prove it understands the problem before implementing a fix. It answers 5 points — root cause, an honest confidence rating, what it still needs to verify, the proposed fix, and possible side effects — and won't start coding until each is addressed.

Why

Claude (like any of us) is most dangerous when it's confidently wrong. This skill makes it slow down at exactly the moment a wrong fix is cheapest to catch: before the first edit.

Install

Run one command:

curl -fsSL https://raw.githubusercontent.com/endlessblink/claude-sure-skill/main/install.sh | bash

That installs /sure for both:

• Claude Code: ~/.claude/skills/sure/SKILL.md
• Codex: ~/.codex/skills/sure/SKILL.md

Restart or reload Claude Code/Codex, then run /sure.

Options

# Claude Code only
curl -fsSL https://raw.githubusercontent.com/endlessblink/claude-sure-skill/main/install.sh | bash -s -- --claude-only

# Codex only
curl -fsSL https://raw.githubusercontent.com/endlessblink/claude-sure-skill/main/install.sh | bash -s -- --codex-only

# Project-local install for the current repo
curl -fsSL https://raw.githubusercontent.com/endlessblink/claude-sure-skill/main/install.sh | bash -s -- --project

# Replace an existing install
curl -fsSL https://raw.githubusercontent.com/endlessblink/claude-sure-skill/main/install.sh | bash -s -- --force

The whole skill is still a single file: skills/sure/SKILL.md. If you prefer manual setup, drop it into a folder your agent reads.

Personal (works in all your projects)

mkdir -p ~/.claude/skills/sure
curl -fsSL https://raw.githubusercontent.com/endlessblink/claude-sure-skill/main/skills/sure/SKILL.md \
  -o ~/.claude/skills/sure/SKILL.md

Per-project (commit it so your whole team gets it)

mkdir -p .claude/skills/sure
curl -fsSL https://raw.githubusercontent.com/endlessblink/claude-sure-skill/main/skills/sure/SKILL.md \
  -o .claude/skills/sure/SKILL.md

Or just clone and copy:

git clone https://github.com/endlessblink/claude-sure-skill.git
cp claude-sure-skill/skills/sure/SKILL.md ~/.claude/skills/sure/SKILL.md

Restart Claude Code (or reload), then run /sure.

Usage

Mid-debugging or planning, type:

/sure

Claude responds with a numbered 1–5 breakdown and holds off on coding until it can justify each point. If its confidence is LOW, it stops and does the research first.

License

MIT