{"adoption": {"forks": 399, "observed_at": "2026-08-28T04:10:48.363763+00:00", "stars": 11497}, "canonical_url": "https://ross.abutalabs.com/products/pkl", "card": {"archived": false, "artifact_type": "cli-tool", "description": "A configuration as code language with rich validation and tooling.", "domain": ["developer-tools", "programming-languages"], "enriched": true, "function": ["configuration-management", "serialization", "form-handling", "cli", "programming-language"], "health_score": 100, "homepage": "https://pkl-lang.org", "language": "Java", "license": "Apache-2.0", "license_family": "permissive", "maturity": "active", "member_repos": ["apple/pkl"], "name": "apple/pkl", "platform": ["windows", "jvm", "cli", "cross-platform"], "pushed_at": "2026-08-26T22:45:19+00:00", "repo": "apple/pkl", "stars": 11497, "tags": ["config-as-code", "configuration-language", "json-yaml-plist", "kubernetes-config", "spring-boot", "code-generation", "type-safe-config", "configuration", "devops", "macos", "linux"], "topics": ["pkl", "java", "kotlin", "config", "configuration", "data", "functional", "json", "language", "object-oriented", "programming-language", "properties", "propertylist", "validation", "xml", "yaml"], "urls": [], "use_cases": ["generate json yaml plist from a single config source", "validate application configuration with type checks", "manage kubernetes configuration as typed templates", "embed a config language into jvm or swift applications", "replace jsonnet or yaml for complex config", "generate typed config classes for java kotlin swift go"], "what_it_is": "Pkl is a configuration-as-code language from Apple with rich validation, templating, and tooling for defining programmable, scalable, and safe configuration. It ships a CLI with a REPL, generates JSON, YAML, property lists, and static config formats, and offers bindings for Java, Kotlin, Swift, and Go.", "when_to_avoid": ["your configuration is simple and flat where yaml or env files suffice", "your team cannot adopt a new language for config", "you need a widely adopted standard with a large ecosystem", "you only need runtime config without code generation or validation"], "when_to_choose": ["you need programmable, validated configuration beyond what yaml or toml offers", "you must emit multiple config formats from one source of truth", "you want type-safe config bindings for jvm, swift, or go apps", "you manage kubernetes or CI configs that benefit from templates and validation"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/pkl", "repo": "apple/pkl", "role": "main", "score": 87}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:10:48.363763+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:15:32.922451+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "20c0d73e7211b6f8d049292022b671170dd60164ec67858541e4a4865ef55a6c", "fetched_at": "2026-08-29T08:14:09.907131+00:00", "kind": "homepage", "missing": false, "url": "https://pkl-lang.org"}, {"content_hash": "f2d2b504660cd2ba8d5aa39018ae42a17da4444409c426d1667e19247a0bdba7", "fetched_at": "2026-08-29T08:14:09.917991+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs/pkl/current/index.html"}, {"content_hash": "2e2465fd6fa2131d787ee3d46665c285c039094da9b7ae7709d2862e482d90ca", "fetched_at": "2026-08-29T08:14:09.919649+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/package-docs"}, {"content_hash": "c3b7f70766bf420752d27ab8e7b6aff7b59f851a832e9cb2325899aa5b536aaf", "fetched_at": "2026-08-29T08:14:09.916325+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/integrations.html"}, {"content_hash": "21e865b9d7b170433189fc886251f113c6a730f5388c14a8809856d9e5399d04", "fetched_at": "2026-08-29T08:14:09.921386+00:00", "kind": "site_page", "missing": false, "url": "https://pkl-lang.org/main/current/pkl-cli/index.html"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 68, "rhythm": 82}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_readme"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 957, "days_push": 7, "days_rel": 41, "gap_med": 34.0, "n_releases_24m": 15}, "score": 87, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}