bug-hunt

A bug-fixing method for the CS BRASIL / CORO SOLTO game codebase. It measures the expected behavior before changing code, tests whether the check can catch a deliberate mistake, and challenges the most obvious explanation.

In plain words
What is it for?
Use it to investigate reported bugs, define a check for the expected behavior, test that the check detects failures, and reject weak explanations before making a change.
Why use it?
It reduces guesswork when something is broken or wrong. The check comes before the fix, so a change is judged against a clear expectation.

Skill for Claude CodeCodex

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/corosolto/client/bug-hunt
Any agent
npx skills add corosolto/client --skill bug-hunt
Clone the repo
git clone --depth 1 https://github.com/corosolto/client

Made for: Claude Code, Codex.

Per session 234 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,750 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00234 $0.06750
Opus 5 $0.00117 $0.03375
Sonnet 5 $0.00047 $0.01350
Haiku 4.5 $0.00023 $0.00675

Measured 3d ago against content hash d0b65accc2b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bug-hunt 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/bug-hunt/SKILL.md · 377 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 3d ago First seen · 377 lines · 234 tokens per session scan A d0b65accc2b0

Subscribe to this mod's changes

bug-hunt is a skill published in the GitHub repository corosolto/client (234 stars, last pushed 3d ago), licensed AGPL-3.0. It adds 234 tokens to every session and 6,750 once invoked, about $0.0012 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.