~aod-bugfix

~aod-bugfix is a skill for Claude Code, Codex from davidmatousek/tachi. It costs 83 tokens per session (5,034 once invoked), scanned A, original, Apache-2.0.

A governed workflow for fixing one software bug from diagnosis through documentation. It uses root-cause analysis, asks for confirmation before code changes, then implements and verifies the fix.

In plain words
What is it for?
Use it when a user reports a bug, shares an error or stack trace, or provides a failing test that needs investigation and repair.
Why use it?
It gives bug fixes a controlled sequence and helps prevent changes being made before the actual failure is understood.

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/davidmatousek/tachi/aod-bugfix
Any agent
npx skills add davidmatousek/tachi --skill aod-bugfix
Clone the repo
git clone --depth 1 https://github.com/davidmatousek/tachi

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 ~aod-bugfix

README.md
[![agentmods](https://agentmods.dev/badge/skills/davidmatousek/tachi/aod-bugfix.svg)](https://agentmods.dev/skills/davidmatousek/tachi/aod-bugfix)
Your own site
<a href="https://agentmods.dev/skills/davidmatousek/tachi/aod-bugfix"><img src="https://agentmods.dev/badge/skills/davidmatousek/tachi/aod-bugfix.svg" alt="Measured on agentmods" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,034 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 $0.00083 $0.05034
Opus 5 $0.00042 $0.02517
Sonnet 5 $0.00017 $0.01007
Haiku 4.5 $0.00008 $0.00503

Measured yesterday against content hash c2f927a657cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

~aod-bugfix 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 yesterday.

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

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/skills/~aod-bugfix/SKILL.md · 381 lines

How it starts

The opening of the file, as written. The whole thing — 381 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/aod.bugfix — One-Shot Bug Fix Command

Pre-Run Safety

Advisory (non-blocking): Before proceeding, consider stashing or committing any in-progress work (git stash or git commit). If Phase 3 fails mid-execution, partial edits can be reverted cleanly from a known-good state.

[Phase 0] Acknowledging input...

Phase 0: Input Acknowledgment & Context Summary

Detect the input mode based on what the user provided:

If pasted content (error message, stack trace, logs, or failing test output):

First, check whether an error or symptom is identifiable in the pasted content:

  • If no error message or symptom is visible (e.g., the paste contains only code, config, or prose with no failure signal): stop and ask specifically — "I don't see an error message or failure symptom in what you pasted. Can you share the actual error, exception, or unexpected behavior you're seeing?" Do not proceed to Phase 0b until a failure signal is present.

If an error or symptom is present, proceed with parsing:

  • Multi-error input: If multiple errors or exceptions appear, identify the PRIMARY failure — the first error in chronological order or the root-level exception (not cascading/downstream errors). Scope all acknowledgment and analysis to the primary failure only. In the context summary output, briefly note how many secondary errors were present and that they are considered downstream (e.g., "Note: 2 additional errors detected — treated as downstream of primary failure"). Do not analyze secondary errors separately.
  • Stack trace summarization: When a multiline stack trace is present, do not pass it through raw. Summarize it in one line, e.g.: "Received: TypeError in src/foo.ts, 12-frame stack trace starting at bar()". Use the actual error type, file, frame count, and top frame from the trace.
  • List any additional files or modules named in the output (beyond those in the summary line)

After parsing, output a 2-3 line context summary before continuing, using this format:

Input received: <error type> in <file/module>
Primary failure: <one-sentence description of the root error>
Scope: <files/components involved, or "unknown — proceeding to KB check">

Read the full file on GitHub · 381 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. yesterday First seen · 381 lines · 83 tokens per session scan A c2f927a657cf

Subscribe to this mod's changes

~aod-bugfix is a skill published in the GitHub repository davidmatousek/tachi (90 stars, last pushed 22d ago), licensed Apache-2.0. It adds 83 tokens to every session and 5,034 once invoked, about $0.0004 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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