OctoCounts – GitHub SLOC Counter

GitHub shows language bars. OctoCounts shows the actual line counts.

GitHub's sidebar shows language percentages, but misses actual file and line counts. OctoCounts adds this missing SLOC (Source Lines of Code) view to public repos without cloning.

Install the extension for instant stats directly on GitHub, or use the web app for public GitHub repositories. It downloads the repo archive, runs tokei, and caches the results—delivering a breakdown faster than git clone.

Use OctoCounts

Surface	Use it for
Web app	Analyze any public GitHub repository and share a permanent report.
Browser extension	Show SLOC directly inside GitHub's repository sidebar in Chrome, Edge, or Firefox.
Public stats	See aggregate report totals, largest repos, language coverage, and source breakdown.
GitHub Action	Comment SLOC changes on pull requests.
CLI	Run npx octocounts https://github.com/owner/repo --json.
MCP server	Give agents and developer assistants access to SLOC reports.
README badges	Add a live SLOC badge that links to a permanent report page.
Launch kit	Copy product descriptions, launch posts, links, screenshots, and badges.

Preview

Why?

Sometimes you just want to know whether a repo is 2k lines, 200k lines, or a weekend-devouring monolith. GitHub already has the repo, the language stats, and the sidebar. OctoCounts fills in the missing numbers.

What it does

• Adds a browser extension card to GitHub repo pages with files, total lines, code, comments, blanks, and language count
• Provides a web app where you can paste any public GitHub repo URL
• Resolves any branch, tag, or commit SHA — pins results to an exact commit so the cache is actually meaningful
• Downloads the GitHub archive tarball instead of cloning (much faster, no git history overhead)
• Counts files, lines, code, comments, and blanks per language via tokei
• Caches reports by owner + repo + commit + tokei version — repeat runs are instant
• Queues analysis jobs so concurrent requests don't bring the server to its knees
• Exports reports as plain text, JSON, or a shareable PNG card

Stack

Layer	Tech
Backend	Rust · Axum · Tokio · SQLx · Postgres · tokei
Frontend	React · TypeScript · Vite · TanStack Query
Infra	Docker Compose (dev + prod configs)

Badges

Drop a live SLOC badge into any README:

<!-- Default branch — full SLOC summary -->
[![SLOC](https://api.octocounts.com/badge/:owner/:repo)](https://octocounts.com/github/:owner/:repo)

<!-- Specific branch -->
[![SLOC](https://api.octocounts.com/badge/:owner/:repo/branch/:branch)](https://octocounts.com/github/:owner/:repo/tree/:branch)

<!-- Specific tag (immutable, cached forever) -->
[![SLOC](https://api.octocounts.com/badge/:owner/:repo/tag/:tag)](https://octocounts.com/github/:owner/:repo/tree/:tag)

<!-- Specific commit SHA (immutable, cached forever) -->
[![SLOC](https://api.octocounts.com/badge/:owner/:repo/commit/:sha)](https://octocounts.com/github/:owner/:repo/commit/:sha)

Add ?lang=<language> to any of the above to get a per-language badge instead:

<!-- Lines of code for a single language -->
[![Rust](https://api.octocounts.com/badge/:owner/:repo?lang=rust)](https://octocounts.com/github/:owner/:repo)
[![Rust](https://api.octocounts.com/badge/:owner/:repo/branch/:branch?lang=rust)](https://octocounts.com/github/:owner/:repo/tree/:branch)

Language names are case-insensitive (rust, Rust, and RUST all work). If a language is not found in the report the badge shows —. While a fresh analysis is running the badge shows ··· — most badge CDNs will retry automatically.

Cache behaviour	Header
Default branch / branch	s-maxage=3600, stale-while-revalidate=86400
Tag / commit	max-age=31536000, immutable

API

POST /api/analyze          { "repoUrl": "...", "refName": "main" }
GET  /api/jobs/:id
GET  /api/reports/:id
GET  /api/stats

GET  /badge/:owner/:repo
GET  /badge/:owner/:repo/branch/:branch
GET  /badge/:owner/:repo/tag/:tag
GET  /badge/:owner/:repo/commit/:sha

All badge routes accept an optional ?lang=<language> query parameter that switches the response from the full SLOC summary badge to a per-language shields.io-style badge.

Running it

See how-to-run-and-deploy.md for local development setup, host-native instructions, GitHub token configuration, and production deployment.

Growth report inventory

Popular public repositories are listed in data/popular-repos.txt. The scheduled workflow seed-popular-repos.yml refreshes that curated inventory weekly.

refresh-github-trending.yml discovers GitHub's daily Trending repositories, validates and publishes the current snapshot to /trending, and pre-generates their stable /github/:owner/:repo SLOC reports. Trending provenance stays separate from real /popular access counts; no date-stamped archive pages are generated.

License

MIT