# Doubt Driven Development

> Security and correctness skepticism for high-stakes changes, and disciplined diagnosis for hard bugs. Use for security changes, irreversible operations, cross-model review of production behavior, and debugging complex failures.

## Facts
- Page: https://tashan.sh/capability/skill-dfintz-doubt-driven-development
- tashan id: skill:Dfintz/doubt-driven-development
- Source: https://github.com/Dfintz/Fintz-harness-kit
- Type: skill
- Category: devtools
- tashan score: 46.0 / 100
- Adoption: 14.0
- Upkeep: 81.0
- Freshness: 97.0
- Evidence coverage: 84% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- License: NOASSERTION
- Official: no

## Install

```sh
cp -r doubt-driven-development ~/.claude/skills/
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-09-12 by tashan (https://tashan.sh) from public evidence. Scorer s5.