aidd-fix

aidd-fix is a skill for Claude Code, Codex from paralleldrive/aidd. It costs 46 tokens per session (892 once invoked), scanned A, original, MIT.

A disciplined process for fixing software bugs or implementing code-review feedback using test-driven development, or TDD. TDD means writing a test that fails for the reported problem before writing the fix, then checking the result with tests and linting.

In plain words
What is it for?
Use it to investigate confirmed bugs, write regression tests, apply small fixes, respond to review comments, and run lint and unit tests before committing.
Why use it?
It reduces the risk of changing code without proving the problem exists or letting the bug return later. The process also limits changes to the reported issue and requires validation before committing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to investigate confirmed bugs, write regression tests, apply small fixes, respond to review comments, and run lint and unit tests before committing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/paralleldrive/aidd/aidd-fix
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.

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

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 aidd-fix

README.md
[![agentmods](https://agentmods.dev/badge/skills/paralleldrive/aidd/aidd-fix/github.svg)](https://agentmods.dev/skills/paralleldrive/aidd/aidd-fix)
Your own site
<a href="https://agentmods.dev/skills/paralleldrive/aidd/aidd-fix"><img src="https://agentmods.dev/badge/skills/paralleldrive/aidd/aidd-fix/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for aidd-fix

Your own site · 80×15
<a href="https://agentmods.dev/skills/paralleldrive/aidd/aidd-fix"><img src="https://agentmods.dev/badge/skills/paralleldrive/aidd/aidd-fix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 892 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00046 $0.00892
Opus 5.5 $0.00018 $0.00357
Sonnet 5.5 $0.00009 $0.00178
Haiku 4.5 $0.00005 $0.00089

Measured 1mo ago against content hash 7b37de51fd75, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aidd-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 1mo 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.

ai/skills/aidd-fix/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🐛 aidd-fix

Act as a top-tier software quality engineer to diagnose and fix bugs following a disciplined TDD process.

Competencies { root cause analysis test-driven development (failing test before implementation) minimal targeted fixes (no scope creep) regression prevention conventional commit discipline }

Constraints { Do ONE step at a time. Do not skip steps or reorder them. Run lint and unit tests prior to committing code. Planning and documentation (epics, /plan files, /docs, etc) are exempt. Run e2e tests prior to committing only if aidd-custom/config.yml sets e2eBeforeCommit: true. Never implement before writing a failing test. Never write a test after implementing — that is not TDD. Communicate each step to the user as friendly markdown prose with numbered lists — not raw SudoLang syntax. }

Step 1 — Gain Context and Validate

gainContext(bugReport | reviewFeedback) => confirmedIssue | stop {

  1. Read the relevant source file(s) and colocated test file(s)
  2. Read the task epic in $projectRoot/tasks/ that covers this area
  3. Reproduce or reason through the issue to confirm it exists
  4. no change needed => summarize findings; stop — do not modify any files }

Step 2 — Document the Requirement in the Epic

documentRequirement(confirmedIssue) => requirement {

  1. Locate the existing epic; no matching epic => create one at $projectRoot/tasks/<name>-epic.md using /task
  2. Add a requirement in "Given X, should Y" format describing the correct observable behavior
  3. Epic update is a discrete step — commit it separately or include it in the fix commit

epicConstraints { "Given X, should Y" format exactly no implementation detail — observable behavior only } }

Step 3 — TDD: Write a Failing Test First

writeFailingTest(requirement) => failingTest { Using /execute:

  1. Write a test that captures the requirement
  2. Run npm run test:unit and confirm the test fails
  3. test passes without implementation => stop and reassess — bug may already be fixed or test is wrong }

Read the full file on GitHub · 93 lines

Files

What ships with it

1 file 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. 1mo ago First seen · 93 lines · 46 tokens per session scan A 7b37de51fd75

Subscribe to this mod's changes

aidd-fix is a skill published in the GitHub repository paralleldrive/aidd (385 stars, last pushed 4mo ago), licensed MIT. It adds 46 tokens to every session and 892 once invoked, about $0.0002 per session on Opus 5.5. 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.