Built SwiPR – swipe-to-review GitHub PRs with AI context

A developer has built SwiPR, a tool that transforms GitHub pull request review into a swipe-based interface with AI context, addressing the bottleneck of PR review in an era of increased code creation. The tool, which works as a Claude MCP plugin, surfaces risk scores, contributor history, and similar past changes to help maintainers and AI agents determine whether code is safe to ship. SwiPR is available as a web demo and can be integrated into Claude Desktop or Cursor for reviewing PRs directly from chat without a browser.

Swipe-to-review GitHub PRs with AI context. Works as a Claude MCP plugin. Try the live demo → https://v0-swipr-build.vercel.app · Add to Claude Desktop ↓ mcp-server · Listed on smithery.ai https://smithery.ai/server/mariojillesca/swipr swipr demo small.mp4 Zeno Rocha CEO of Resend https://resend.com on X: "the cost of opening a PR has dropped to zero. now, we have tons of draft PRs waiting for a finite and ultra precious resource: attention. turns out the bottleneck is no longer creation. it's reviewing."— Feb 2026 "before our main repo had an average of ~20–40 open PRs on any given day. now, we average ~130–200 open PRs."— May 2026 PR review is a context problem. Whether a maintainer is triaging or an AI agent is deciding whether to merge, the question is the same: is this safe to ship? Answering it well requires knowing the risk level, contributor history, similar past changes, and which tests cover the diff — not just reading the lines changed. SwiPR surfaces that context as a swipe UI for humans and an MCP server for agents. - Paste any public GitHub repo — SwiPR fetches open PRs and stores them with embeddings - Swipe right to approve, left to request changes, down to skip — or use J / F / Space - The right panel surfaces: risk score, AI summary, similar past PRs, contributor history - Hit "Why is this risky?" , "Show me callers" , or "What tests cover this?" for deeper context on demand - Ask anything in the chat — the AI has access to the full diff and codebase context AI context is cached per PR — no repeated API calls on every card view. SwiPR exposes the same PR context as an MCP server. Add it to Claude Desktop or Cursor and review PRs directly from chat — no browser required. Add to ~/Library/Application Support/Claude/claude desktop config.json : { "mcpServers": { "swipr": { "command": "npx", "args": "-y", "supergateway", "--streamableHttp", "https://v0-swipr-build.vercel.app/api/mcp" } } } Then ask Claude: "Look up resend/resend-node PR 1247 — what's the risk and are there similar past changes?" "Which open PRs in vercel/next.js touch the router?" "Find tests that cover the changed files in PR 892." All 12 MCP tools are pure database reads — zero AI credits consumed when using the hosted server. SwiPR is listed on smithery.ai https://smithery.ai/server/mariojillesca/swipr and mcp.so https://mcp.so/server/swipr/nochinxx . | Tool | What it returns | |---|---| lookup pr | Resolve owner/repo number → internal ID | analyze pr | Full PR data: files, patches, risk score, contributor stats, cached AI summary | risk score | 0–100 heuristic score with reasons | find similar changes | Past PRs in the same repo with semantic similarity | get contributor history | PR count, merge rate, first contribution date | inspect file | Raw file content at HEAD | find callers | Search patches for usages of a function name | find related tests | Test files that likely cover the changed code | git blame summary | Recent contributors to a file path | compare with | File content at an arbitrary git ref | record decision | Capture approve / changes / skip | summarize session | End-of-session stats | The chat feature works with any of these free-tier providers — click the ⌘ button in the header and paste your key. It's stored in your browser's localStorage only, never sent to the server. | Provider | Key format | Free tier | |---|---|---| | gsk ... Google Gemini https://aistudio.google.com/apikey AIza... Anthropic https://console.anthropic.com/settings/keys sk-ant-... The risk heuristic lives entirely in lib/scoring.ts /nochinxx/SwiPR/blob/main/lib/scoring.ts — plain TypeScript, no ML, no external calls. Edit it to match your team's standards. Default rules: | Signal | Score | |---|---| | Large diff 500 lines | +20 | | Medium diff 200–500 lines | +10 | | Many files changed 20 | +15 | | Touches config/lock/CI files | +20 | | No test files changed | +10 | | Empty PR description | +10 | | First-time contributor | +15 | | New contributor <3 prior PRs | +8 | | Low historical merge rate <40% | +10 | To add a rule, add an if block in computeRiskScore : js const touchesAuth = files.some f = f.filename.includes "lib/auth" ; if touchesAuth { score += 25; reasons.push "Touches auth module — requires security review" ; } Score is capped at 100. Color thresholds green/yellow/red are at 40 and 70 — adjust in app/swipe/ components/view-helpers.ts /nochinxx/SwiPR/blob/main/app/swipe/ components/view-helpers.ts . Requires three services — all have free tiers. git clone https://github.com/nochinxx/SwiPR.git cd SwiPR pnpm install | Service | Purpose | Free tier | |---|---|---| | Vercel AI Gateway https://vercel.com/ai-gateway cp .env.example .env.local DATABASE URL=postgresql://... Neon pooled connection string AI GATEWAY API KEY=... Vercel AI Gateway key GITHUB TOKEN=... Optional — raises GitHub rate limit to 5000/hr -- Run in Neon SQL editor CREATE EXTENSION IF NOT EXISTS vector; pnpm db:push -- Add HNSW indexes for fast similarity search CREATE INDEX IF NOT EXISTS prs embedding idx ON prs USING hnsw embedding vector cosine ops ; CREATE INDEX IF NOT EXISTS pr files embedding idx ON pr files USING hnsw embedding vector cosine ops ; pnpm dev local dev pnpm build verify before deploying pnpm precache pre-load repos for a demo Push to GitHub, connect to a Vercel project, set the same env vars in Vercel settings. Point your Claude Desktop config at your own deployment URL. Neon's free tier holds ~512 MB. Each ingested PR uses ~100 KB. That's around 5,000 PRs or 40–50 mid-sized repos before needing an upgrade. Ingest is capped at 100 open PRs per repo. Next.js 16 — App Router, React 19 Tailwind v4 + shadcn/ui — styling Framer Motion — card animations Neon Postgres + pgvector — PR storage and similarity search Drizzle ORM — schema and queries Vercel AI Gateway — Claude Sonnet 4.6 analysis , text-embedding-3-small vectors @ai-sdk/anthropic · @ai-sdk/google · @ai-sdk/groq — BYOK chat support mcp-handler — MCP server at /api/mcp Issues and PRs welcome. - Stack is Next.js App Router + Drizzle + Neon + Vercel AI SDK — no other abstractions. - Risk scoring in lib/scoring.ts — heuristic improvements especially welcome. - Don't add GitHub OAuth or actual PR posting. Read-only access is intentional. - Run pnpm build before opening a PR.