bug-fix

bug-fix is a skill for Claude Code, Codex from techygarg/lattice. It costs 77 tokens per session (2,499 once invoked), scanned A, original, MIT.

A reproduce-first workflow for investigating and fixing software bugs, with checks to prevent the same problem returning.

In plain words
What is it for?
Use it to debug failures, patch regressions, add regression tests, and decide where a fix belongs in the codebase.
Why use it?
It gives the repair a clear path from reproducing the failure to diagnosing its cause and verifying the fix, while limiting unrelated code changes.

Skill for Claude CodeCodex

Part of the lattice plugin — 33 skills, 2 agents shipped together

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/techygarg/lattice/bug-fix
Any agent
npx skills add techygarg/lattice --skill bug-fix
Clone the repo
git clone --depth 1 https://github.com/techygarg/lattice

Made for: Claude Code, Codex.

Or install lattice, the plugin that ships this one along with the rest of its 33 skills, 2 agents.

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 bug-fix

README.md
[![agentmods](https://agentmods.dev/badge/skills/techygarg/lattice/bug-fix.svg)](https://agentmods.dev/skills/techygarg/lattice/bug-fix)
Your own site
<a href="https://agentmods.dev/skills/techygarg/lattice/bug-fix"><img src="https://agentmods.dev/badge/skills/techygarg/lattice/bug-fix.svg" alt="Measured on agentmods" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,499 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 $0.00077 $0.02499
Opus 5 $0.00039 $0.01249
Sonnet 5 $0.00015 $0.00500
Haiku 4.5 $0.00008 $0.00250

Measured 4d ago against content hash f489e9320795, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bug-fix 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 4d 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.

plugins/lattice/skills/bug-fix/SKILL.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bug Fix

Required Skills

Load these skills based on bug scope:

  1. framework:knowledge-priming -- Load project context so the diagnosis grounds in the real codebase. (always)
  2. framework:context-anchoring -- Find and load the feature's context doc; capture diagnosis and repair decisions in it. (always)
  3. framework:learning-harvest -- Load prior operational learnings at session start; harvest new ones at session end. (always)
  4. framework:collaborative-judgment -- Surface hypotheses and repair trade-offs as structured options instead of silently assuming. (always)
  5. framework:clean-code -- Keep the fix focused, readable, and free of drive-by changes. (always)
  6. framework:test-quality -- Regression tests, characterization baseline, assertion quality. (always)
  7. framework:architecture -- Layer placement and dependency direction. (conditional: layer placement is in question — Steps 2/4/5)
  8. framework:domain-driven-design -- Domain invariants and aggregate behavior. (conditional: domain invariants involved — Steps 2/5)
  9. framework:secure-coding -- Trust bounds and sensitive data handling. (conditional: trust boundary crossed — Steps 2/5)

Workflow

Step 1: Establish Bug Context

Start from the failure, not from a proposed fix.

  • Gather the observed behavior, the expected behavior, the reproduction path, and any evidence: failing test, error message, stack trace, log excerpt, request payload, recent change.
  • Run framework:learning-harvest Load behavior. Focus hint: "bug investigation — focus: reliability, quality signals".
  • Run framework:context-anchoring Document Discovery to check for an existing context doc covering the affected feature/module:
    • Found → Load behavior. Honor every logged decision and constraint as an active commitment while diagnosing. An open investigation of this same bug is already logged in it → confirm with the user whether to resume that investigation or start fresh.
    • Not found → Proceed from the bug report and the current code. Do not block diagnosis on a missing context doc.

Read the full file on GitHub · 188 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. 4d ago First seen · 188 lines · 77 tokens per session scan A f489e9320795

Subscribe to this mod's changes

bug-fix is a skill published in the GitHub repository techygarg/lattice (183 stars, last pushed 5d ago), licensed MIT. It adds 77 tokens to every session and 2,499 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 2026-08-30.

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