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 →

6.1

GitHub Metrics

Stars

19.3k

Forks

1.5k

Open Issues

Watchers

187

Contributors

Weekly Commits

Language

TypeScript

License

NOASSERTION

Last Commit

Sep 21, 2025

Created

Mar 31, 2025

Latest Release

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Release Date

—

Synced: Apr 16, 2026

Quality Scores

Documentation Qualityw: 20%

5.5

No dedicated docs site. Description: 138 chars. Stars signal: 19,323. Contributors: 16. Score: 5.5/10

Community Healthw: 20%

7.4

Stars: 19,323. Contributors: 16. Watchers: 187. Forks: 1,462. Issue ratio: 0.1%. Score: 7.4/10

Maintenance Velocityw: 15%

3.0

Last commit: 207d ago. Weekly commits: 0. No releases published. Maturity bonus: 1.0y old. Score: 3/10

API Design & DXw: 20%

7.6

Stars/issues ratio: 878. Typed language: TypeScript. No dedicated API docs. License: NOASSERTION. Popularity signal: 19,323 stars. Score: 7.6/10

Production Readinessw: 15%

5.1

Battle-tested: 19,323 stars. Peer review: 16 contributors. No versioned releases. Licensed: NOASSERTION. Age: 1.0 years. Maintenance: last commit 207d ago. Score: 5.1/10

Ecosystem Integrationw: 10%

8.1

Fork interest: 1,462. Major ecosystem: TypeScript. License: NOASSERTION. Adoption: 19,323 stars. Score: 8.1/10