doubt-driven-development SKILL.md skillA

This file is byte-identical to the first copy the registry indexed, one of 4 indexed copies. Same content hash, so the same checks give both the same grade.

doubt-driven-development from nota-america/forgecat-agent-profiles is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

mdr add nota-america/forgecat-agent-profiles/doubt-driven-development@git:20260916.3a6b22e

Pins git:20260916.3a6b22e in mdr.lock. Pin the fingerprint instead.

Audit grade

A, 17 of 17 checks passed

Kind

SKILL.md skill

Repository

nota-america/forgecat-agent-profiles

Path

profiles/addyosmani/agent-skills/for-forgecat/platforms/codex/.agents/skills/doubt-driven-development/SKILL.md

Versions recorded

1

Latest version

git:20260916.3a6b22e, committed Sep 16, 2026

Size

16,647 bytes

Repository stars

93

License

Apache-2.0

Subjects every non-trivial decision to a fresh-context adversarial review before it stands. Use when you want every assumption cross-examined before proceeding, when stress-testing a plan for hidden failure modes, when correctness matters more than speed, when working in unfamiliar code, when stakes are high (production auth, security-sensitive logic, a high-stakes migration, irreversible operations), or any time a confident output would be cheaper to verify now than to debug later.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Doubt-Driven Development

## Overview

A confident answer is not a correct one. Long sessions accumulate context that quietly turns assumptions into "facts" without anyone noticing. Doubt-driven development is the discipline of materializing a fresh-context reviewer — biased to **disprove**, not approve — before any non-trivial output stands.

This is not `/review`. `/review` is a verdict on a finished artifact. This is an in-flight posture: non-trivial decisions get cross-examined while course-correction is still cheap.

## When to Use

A decision is **non-trivial** when at least one of these is true:

- It introduces or modifies branching logic
- It crosses a module or service boundary
- It asserts a property the type system or compiler cannot verify (thread safety, idempotence, ordering, invariants)
- Its correctness depends on context the future reader cannot see
- Its blast radius is irreversible (production deploy, data migration, public API change)

Apply the skill when:

- About to make an architectural decision under uncertainty
- About to commit non-trivial code
- About to claim a non-obvious fact ("this is safe", "this scales", "this matches the spec")
…

Read the whole file at its exact version.

How to install

mdr add nota-america/forgecat-agent-profiles/doubt-driven-development@sha256:6fa1fcd8420c28da

[![mdr](https://markdownregistry.com/badge/art_mu22go4lqent4knm.svg)](https://markdownregistry.com/a/art_mu22go4lqent4knm)

Versions

The registry has recorded 1 version of this file, committed on Sep 16, 2026.

Audit of the latest version

Source

API

GET https://markdownregistry.com/api/v1/artifacts/art_mu22go4lqent4knm
GET https://markdownregistry.com/api/v1/resolve?ref=nota-america/forgecat-agent-profiles/doubt-driven-development
GET https://markdownregistry.com/api/v1/blob/6fa1fcd8420c28daf7e53c5b08b0f20b907911efd2a6d9bce0b9740da20a4008

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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