humanlayer/12-factor-agents

Prompt Engineering

What are the principles we can use to build LLM-powered software that is actually good enough to put in the hands of production customers?

GitHub →

5.9

GitHub Metrics

Stars

26.7k

Forks

2.0k

Open Issues

Watchers

223

Contributors

Weekly Commits

Language

TypeScript

License

NOASSERTION

Last Commit

Sep 21, 2025

Created

Mar 31, 2025

Latest Release

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Release Date

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Synced: Oct 13, 2026

Quality Scores

Documentation Qualityw: 20%

5.6

No dedicated docs site. Description: 138 chars. Stars signal: 26,658. Contributors: 16. Score: 5.6/10

Community Healthw: 20%

7.6

Stars: 26,658. Contributors: 16. Watchers: 223. Forks: 1,991. Issue ratio: 0.1%. Score: 7.6/10

Maintenance Velocityw: 15%

1.0

Last commit: 387d ago. Weekly commits: 0. No releases published. Maturity bonus: 1.5y old. Score: 1/10

API Design & DXw: 20%

7.6

Stars/issues ratio: 987. Typed language: TypeScript. No dedicated API docs. License: NOASSERTION. Popularity signal: 26,658 stars. Score: 7.6/10

Production Readinessw: 15%

5.2

Battle-tested: 26,658 stars. Peer review: 16 contributors. No versioned releases. Licensed: NOASSERTION. Age: 1.5 years. Maintenance: last commit 387d ago. Score: 5.2/10

Ecosystem Integrationw: 10%

8.2

Fork interest: 1,991. Major ecosystem: TypeScript. License: NOASSERTION. Adoption: 26,658 stars. Score: 8.2/10