printemps.tokyo

Deterministic sprite atlas packer CLI for CI: TexturePacker-style JSON, Phaser 3 multiatlas, Godot 4 .tres, CSS, and a --check mode that fails the build when the atlas is stale

Audit your repo's AI agent instruction files (AGENTS.md, CLAUDE.md, .cursor/rules, copilot-instructions) for cross-tool portability: which agents would load nothing, duplicated or contradicting content, broken @imports and links, nesting precedence, and token bloat. Cited sources, fixes, JSON, CI exit codes. Rust CLI.

Two questions about your CSS: what is not safe for your target yet, and which safety nets can you finally delete? Audits a codebase against Web Platform Baseline in both directions - risky features, and now-redundant prefixes, dead @supports guards and polyfills. Verified web-features snapshot. Rust CLI.

Slice a 40,000px webtoon canvas without cutting through a face. Finds the gutters between panels and cuts there, as close to your target tile height as possible; hard cuts are reported, never hidden. Platform presets with sources, --dry-run, --check for pre-upload validation. Rust CLI.

Find the code that dies on a deadline. Scans a repo for dependencies on APIs with announced shutdown dates (OpenAI Assistants API, Content API for Shopping and more) and reports file:line, days remaining, and the official migration path. Data-driven catalog with cited sources, CI exit codes. Rust CLI.

Audit an open source repo for the security practices downstream companies now ask about: SECURITY.md with a real reporting channel, license, lockfiles, CI tests, unpinned Actions, release checksums, committed secret-bearing files. Graded report with sources and fixes. Rust CLI. Preparation aid, not legal advice.

See your pages' real-user Core Web Vitals from the Chrome UX Report: p75 LCP/INP/CLS (plus FCP/TTFB) graded against official thresholds with good/needs-improvement/poor distribution, per form factor, --history sparklines, JSON, and CI exit codes. Stdlib-only Go CLI.

Audit an MCP server for readiness against the 2026-07-28 stateless MCP spec: flags session reliance, legacy draft-04 tool schemas (vs JSON Schema 2020-12), deprecated task methods, and missing cache hints, with a graded report and CI exit code. Stdlib-only Go CLI, stdio and Streamable HTTP.

A Mystery-Dungeon-style roguelike that runs inside Neovim

Annotated hex dump that teaches you a binary format: labels magic numbers, chunk lengths, and header fields (and verifies PNG CRCs) for PNG, GIF, WAV, and ZIP. Stdlib-only Zig CLI, never trusts length fields, JSON output.