Penify.dev
Verified Oct 15, 2026 ActiveWrites docstrings and inline documentation from your code changes via CLI, git hook, or GitHub App.
Listed on EffectHub ·
Pricing
- Pricing model
- Freemium
- Paid options from
- $18/mo
- Billing
- Monthly
Free tier covers public repos and a capped number of files per private repo; Premium is $18/month with Pro one tier above it, both billed monthly.
Use tool ↗About Penify.dev
Penify.dev watches commits and pull requests and writes docstrings and inline documentation for the functions that changed, rather than documenting a whole repository at once. It works through a CLI, a git hook, or a GitHub App that comments directly on pull requests, and covers languages including Python, Java, TypeScript, JavaScript, and Kotlin across GitHub, GitLab, and Bitbucket. The free tier covers public repositories and a limited number of files per private repository; paid Premium and Pro plans lift those caps for individual developers and teams.
- Platforms
- Web
- API
- Not confirmed
- Last verified
- Oct 15, 2026
Verified sources
- Penify.dev generates docstrings from commit diffs via CLI, git hook and GitHub App across Python, Java, TypeScript, JavaScript and Kotlinpenify.dev ↗
- Free tier covers public repos and a capped number of private-repo files; Premium is $18/month and Pro is $25/monthdocs.penify.dev ↗
Is Penify.dev legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Domain registered
- Feb 29, 2024 (2 years ago)Registry record (RDAP), registrar CloudFlare, Inc., looked up Sep 6, 2026
- TLS certificate
- Issued by Google Trust Services, valid until Nov 21, 2026Seen in our own connection to the site on Oct 15, 2026
- Last checked
- Oct 15, 2026The site answered
- Operated by
- Penify.devOur research, card verified Sep 1, 2026
Pros & cons of Penify.dev
Penify.dev focuses narrowly on the least glamorous documentation task — writing docstrings for the functions inside a diff — instead of trying to generate whole READMEs or wikis. That focus makes it easy to bolt onto an existing pull-request workflow, but it also means it does not replace higher-level documentation tools, and the free tier's per-file cap on private repos pushes active teams toward a paid plan quickly.
Pros
- Comments directly on pull requests through a GitHub App instead of requiring a separate tool to check
- Works via CLI or git hook for teams that don't want a GitHub-specific integration
- Free tier is usable for public repositories without a credit card
Cons
- Private repo usage on the free tier is capped by file count, which active codebases will exceed quickly
- Limited to a fixed set of supported languages rather than open-ended code coverage
- Only documents inline code, not higher-level architecture or user-facing docs
Best for
- Teams that want docstrings kept current automatically as pull requests land
- Open source maintainers documenting public repositories for free
- Developers who prefer a git hook or CLI over a separate documentation dashboard
Not for
- Teams wanting a full project wiki or architecture documentation generator
- Anyone needing documentation for languages outside its supported set
Watch out: Check the current per-file cap on the free private-repo tier before relying on it for a real team repository.
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