{"adoption": {"forks": 102, "observed_at": "2026-08-28T04:03:28.191476+00:00", "stars": 1071}, "canonical_url": "https://ross.abutalabs.com/products/kontra", "card": {"archived": false, "artifact_type": "library", "description": "A lightweight JavaScript gaming micro-library, optimized for js13kGames.", "domain": ["web-development", "frontend"], "enriched": true, "function": ["game-engine", "animation", "image-processing"], "health_score": 67, "homepage": "https://straker.github.io/kontra/", "language": "JavaScript", "license": "MIT", "license_family": "permissive", "maturity": "active", "member_repos": ["straker/kontra"], "name": "straker/kontra", "platform": ["browser"], "pushed_at": "2026-01-30T18:51:24+00:00", "repo": "straker/kontra", "stars": 1071, "tags": ["micro-library", "js13kgames", "game-jam", "html5-games", "sprites", "game-loop", "canvas", "lightweight", "es-modules", "object-pool", "quadtree", "game-development", "javascript", "web"], "topics": ["javascript", "game-library", "js13kgames", "kontra"], "urls": [], "use_cases": ["build a small html5 game for a game jam", "make a canvas game under 13kb", "prototype a 2d game quickly in javascript", "load assets and handle input in a browser game", "run a fixed game loop with sprites", "use object pools and quadtrees for memory-efficient games"], "what_it_is": "Kontra.js is a lightweight JavaScript gaming micro-library optimized for size-constrained contexts like the js13kGames competition. It provides core game essentials such as asset loading, input handling, a game loop, sprites, object pools, and quadtrees while staying small, modular, and memory efficient.", "when_to_avoid": ["you need a full-featured engine with physics, scenes, and editors like Phaser", "you are building a large commercial game needing extensive tooling", "you need 3D rendering", "you want batteries-included features out of the box"], "when_to_choose": ["you need a tiny, size-optimized game library for js13kGames or similar size-limited jams", "you want a minimal foundation to extend rather than a full engine", "you are prototyping and want to get running quickly", "you want to combine it with other libraries"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/kontra", "repo": "straker/kontra", "role": "main", "score": 52}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:03:28.191476+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T06:53:52.770221+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d2f353d60b8d88102fe8b059bd184e8866ea2bca4cd180eef83421b66ce9e3c", "fetched_at": "2026-08-28T04:03:28.191476+00:00", "kind": "readme", "missing": false, "url": "https://github.com/straker/kontra"}, {"content_hash": "8c4f57b7b2c7fddd317887e3f4bc397a6819ff8204965fdccbd96ee1d4f22d75", "fetched_at": "2026-08-29T12:55:59.386582+00:00", "kind": "homepage", "missing": false, "url": "https://straker.github.io/kontra/"}, {"content_hash": "bf5157d3c7e7b24a4e6ec135bcb3cc76fefbb48cda40cbb2c91fb5b430c78ca1", "fetched_at": "2026-08-29T12:55:59.389285+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/kontra"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 65, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 4196, "days_push": 215, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 52, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}