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Semantic GitHub PR labels using Jev's typed decisions, with conceptual scope instead of line counts
- Forks
- 2
- Last pushed
- Updated Sep 2026
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CommunityJev Tools & CLIs
Jev Pr Labeler
Semantic PR labeling with Jev through OpenRouter Decisions API, assigning type, area, platform, and conceptual-scope size from a fixed taxonomy.
- Stars
- 4
- Language
- Python
- License
- MIT
- Published by
- Community
- Author
- 1jehuang
- Last verified
- Oct 2026
About this project
Semantic GitHub pull request labeling with Jev, TypeSafe's typed decision model, through OpenRouter's Decisions API. Size means conceptual scope, not lines changed. A small protocol change can have broader scope than a large mechanical rename. The initial taxonomy matches Jcode. It lives in jevlabeler/taxonomy.py and can be adapted in a fork. The model can select only these labels, never invent names. Requires Python 3.11+, no runtime packages. Run from this repository:
Quoted from the project's README. Read the full README.
Works forJev for Classification
Used inJev for Software & DevTools
- Languages
- Python
Highlights
- Size means conceptual scope, from XS trivial fix to XL redesign, never line counts.
- Small diffs use one typed request; larger diffs are partitioned then reduced with abstention.
- Action runs only after a current-head Greptile review, with no daemon to host.
- Missing-label creation preserves colors, and security labels are never auto-removed.
Watch out
PR text and patches are sent to OpenRouter/TypeSafe, and GitHub label writes are best-effort with no atomic compare-and-swap. Copy reviewed against the repository README on 2026-10-04, not from running it.
Questions about this entry
Short answers drawn from the linked project or page.
The model can only select from the fixed taxonomy in taxonomy.py and never invents names. Unknown or low-confidence answers below 0.75 abstain, and manual type and size labels always win.
Dry-run is the default and never writes to GitHub, but it still makes a paid Jev call. Local runs are add-only; hosted runs apply labels as github-actions[bot] so ownership stays clear.
No. The workflow validates the app ID and PR head, never checks out PR code, downloads artifacts, installs dependencies, or executes PR text. Use a fresh hosted runner with a spend-capped key.
No. Title, description, filenames, and patches go to OpenRouter/TypeSafe, so do not enable it on private code without approving that flow. Evidence is bounded to 2 MB, 64 excerpts, and comparisons over 300 files are rejected.
Conceptual scope, never bytes or line counts. XS is a trivial correction without a design change, S a focused change within one component, M a substantive subsystem feature or coordinated changes to related components, L cross-subsystem behavior or an interface change, and XL an architectural redesign or major migration. A small protocol change can carry broader scope than a large mechanical rename.
Python 3.11 or newer with no runtime packages, run from the repository. Set OPENROUTER_API_KEY and authenticate gh or set GH_TOKEN, then python3 -m jev_labeler --repo owner/repo --pr 123, which is a dry run; add --apply and optionally --ensure-labels to write. --ensure-labels creates missing taxonomy labels without altering existing colors or descriptions, and the report carries per-question choice, confidence, provider usage and cost.
The deployment is review-ordered: Greptile, then Jev labels, then a human merge decision. The action waits for a completed Greptile review of the current head, so a missing, pending, rerun-requested or old-head review leaves labeling waiting, and it validates the official app ID and PR head even when GitHub sends an empty association. Hosted runs apply labels as github-actions[bot]; existing PRs get no retroactive webhook and need a one-time dispatch pass.
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