PR Lens

An open-source agent skill for redesigning GitHub README homepages around a repository's actual content. It reads the repository first, identifies the clearest value and supporting proof, and then derives a project-specific visual system rather than applying a shared template. In whole-README mode, it works across content, visual-system, and engineering layers: it removes repetition and internal jargon, moves proof toward the opening, derives typography, color, composition, and project-native motifs, and keeps assets GitHub-safe, accessible, searchable, and copyable. The skill separates visual and content layers by using SVG for editable heroes, section transitions, comparisons, diagrams, and identity while retaining maintainable Markdown for searchable body text. It supports hybrid SVG compositions with optional AI-generated elements, local previews, and an approval step before publishing. The repository documents examples used by eight public repositories, including project-specific heroes and real outputs for slide creation, UI reconstruction, icon generation, agent delegation, vehicle telemetry, interactive mapping, and a solo werewolf game.

oss-pr-reviewer is an AI-powered command-line tool for reviewing GitHub pull requests and producing structured Markdown or JSON reports for maintainers. It fetches pull-request metadata and changed-file patches with Octokit, normalizes reviewable content, skips binary, patchless, truncated, and oversized files with explanations, and splits large text diffs into deterministic batches without cloning or executing the repository code. The tool sends batched changes to OpenAI for structured findings, validates responses with Zod, then merges, deduplicates, orders, and filters findings by severity. It can apply repository-specific review rules and ignored paths from a trusted base-branch `.oss-pr-reviewer.yml` file, retry transient GitHub and OpenAI failures, and optionally publish bounded advisory reports through GitHub Actions. It requires Node.js 20 LTS or newer and, according to the repository, is run from a checkout because its package-ready release is not yet published to npm.

Excalidraw is an open-source virtual whiteboard for creating hand-drawn-style diagrams, wireframes, and other canvas-based drawings. It provides tools for shapes, arrows, lines, freehand drawing, image insertion, labeled and bound arrows, zooming, panning, undo and redo, dark mode, shape libraries, localization, and export to PNG, SVG, clipboard, or its open JSON format. The editor is available as an npm package for integration into applications. The hosted Excalidraw.com app adds real-time collaboration, end-to-end encryption, browser autosave with local-first behavior, offline PWA support, and shareable read-only links. The videos describe using Excalidraw to visualize Mermaid-generated diagrams and to manually map multi-step AI workflows with jobs, arrows, parallel lanes, checks, and human approvals.

Archify is an open-source agent skill and Node.js rendering and validation system that turns a codebase or system description into searchable, shareable interactive diagrams. It supports architecture, workflow, sequence, data-flow, and lifecycle diagrams and can be used with Cursor, Claude Code, Codex CLI, and OpenCode. Agents produce typed JSON intermediate representations, which Archify deterministically validates and compiles into self-contained HTML and SVG artifacts. The generated viewer supports node search, optional revision-verified source inspection, upstream and downstream reach tracing, route inspection, semantic-role comparisons, guided stories, themes, presets, and finite motion. Archify can compare two validated snapshots as Before, Delta, and After views, identifying added, removed, changed, moved, and rerouted facts. Its exports include PNG, SVG, WebM, and 1200×630 share cards; it can be installed as a global skill with `npx skills add tt-a1i/archify -g`.

tldraw is an open-source SDK for building infinite-canvas applications in React, including whiteboards, diagramming tools, and workflow-mapping interfaces. Its canvas engine supports custom shapes, tools, bindings, UI components, drawing, geometric shapes, rich text, arrows, snapping, media, image export, and runtime control through an Editor API. The repository also documents self-hosted real-time collaboration through @tldraw/sync, browser-based rendering, and canvas primitives for AI integrations. It can be installed as an npm package and includes starter kits for applications such as workflow builders, agent canvases, and AI chat interfaces. The starter kits are MIT-licensed.