---
title: "Doubt-Driven Development - Air Market"
description: "You have made a call that feels right, but it touches something that really matters: live systems, security, code you do not know well, or an action you cannot undo. This puts your decision in front…"
canonical: "https://airmarket.ai/app/doubt-driven-development"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Doubt-Driven Development

Skill by [Addy Osmani](/@addyosmani)

# Doubt-Driven Development

For decisions too important to take on confidence alone

## What this does

You have made a call that feels right, but it touches something that really matters: live systems, security, code you do not know well, or an action you cannot undo. This puts your decision in front of a skeptical reviewer that starts with none of your assumptions. Reach for it whenever checking now would cost less than debugging later.

### Top 3 things it does for you

- Stress-test my non-trivial decisions before they stand
- Challenge confident work in code I barely know
- Put security-sensitive or irreversible changes under a hard review

## Information

**Doubt-Driven Development at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Addy Osmani](/@addyosmani) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 16 KB |
| Licence | MIT |
| Repository | [addyosmani/agent-skills](https://github.com/addyosmani/agent-skills/tree/7676817c12a1317454ae3898a0c5c1eacf5dd3d5/skills/doubt-driven-development) |
| GitHub stars | 114,337 (as of Nov 2026) |
| Installs | 66,716, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Doubt-Driven Development and flagged nothing. AIR's verdict: **safe**.

**What Doubt-Driven Development's check was run against**

|  |  |
| --- | --- |
| Commit | 7676817c12a1317454ae3898a0c5c1eacf5dd3d5 |
| Content hash | 24f05f6cd003c817e8a63e389a0db6698b6921902c0b9e657e24ff6bc918c03f |
| Files read | [Browse the files at this exact commit](https://github.com/addyosmani/agent-skills/blob/7676817c12a1317454ae3898a0c5c1eacf5dd3d5/skills/doubt-driven-development/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Doubt-Driven Development](/security/doubt-driven-development)

## About Doubt-Driven Development

Some choices deserve more trust than others. This skill takes each non-trivial decision in your work and challenges it through an adversarial review conducted from a clean slate, without the assumptions that built up while you were making it. A decision only stands once it has survived that challenge.

Reach for it when correctness matters more than speed, when you are working in unfamiliar code, or when the stakes are high: production systems, security-sensitive logic, operations that cannot be undone. The test it applies is a practical one: if a confident answer could be verified now or debugged much later, it is worth verifying now.

## What's inside

- SKILL.md - instructions

## Questions

### Is Doubt-Driven Development safe to install?

AIR scanned this exact version of Doubt-Driven Development and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 7676817c12a1, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/doubt-driven-development.

### How do I install Doubt-Driven Development?

Open https://airmarket.ai/app/doubt-driven-development on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/addyosmani/agent-skills/tree/7676817c12a1317454ae3898a0c5c1eacf5dd3d5/skills/doubt-driven-development. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Addy Osmani](/@addyosmani)

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Canonical URL: <https://airmarket.ai/app/doubt-driven-development>