{"adoption": {"forks": 3278, "observed_at": "2026-08-28T04:11:30.274755+00:00", "stars": 20605}, "canonical_url": "https://ross.abutalabs.com/products/mypy", "card": {"archived": false, "artifact_type": "library", "description": "Optional static typing for Python", "domain": ["developer-tools", "programming-languages", "testing"], "enriched": true, "function": ["type-system", "linter", "developer-tools"], "health_score": 80, "homepage": "https://www.mypy-lang.org/", "language": "Python", "license": "NOASSERTION", "license_family": "other", "maturity": "stable", "member_repos": ["python/mypy"], "name": "python/mypy", "platform": ["python", "cli", "cross-platform"], "pushed_at": "2026-08-25T10:25:46+00:00", "repo": "python/mypy", "stars": 20605, "tags": ["static-analysis", "type-checking", "type-hints", "pep-484", "gradual-typing"], "topics": ["python", "types", "typing", "typechecker", "linter"], "urls": [], "use_cases": ["check python code for type errors before running it", "add type hints to an existing python codebase gradually", "catch bugs like passing wrong argument types to functions", "enforce type annotations in ci pipeline", "verify stub files for a python library", "find attribute errors and typos in large python projects"], "what_it_is": "Mypy is an optional static type checker for Python that validates type hints (PEP 484) in your code. It catches type errors before runtime while allowing gradual migration from dynamic to static typing.", "when_to_avoid": ["you need runtime type validation or enforcement rather than static analysis", "you want a general-purpose linter for style issues rather than type checking", "your code relies heavily on dynamic patterns mypy cannot infer"], "when_to_choose": ["you want compile-time-like type checking for python code", "you are migrating a dynamic python codebase to typed code incrementally", "you need to validate type hints against typeshed stubs", "you want machine-checked documentation via annotations"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/mypy", "repo": "python/mypy", "role": "main", "score": 77}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:11:30.274755+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T16:58:40.801204+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "0d5c9e213ceeafa4e4b482c62047ce819f4c90840103ddc7ba79c5ebe07651a1", "fetched_at": "2026-08-28T04:11:30.274755+00:00", "kind": "readme", "missing": false, "url": "https://github.com/python/mypy"}, {"content_hash": "9d43d9c187a04baf7c7b7a0949ef0a6422fa40780b8c12cfc96573e961b17b27", "fetched_at": "2026-08-29T07:57:17.974876+00:00", "kind": "homepage", "missing": false, "url": "https://www.mypy-lang.org/"}, {"content_hash": "2e1e261120872fd93bbafdd082be640ebc99bb347d64abd91076865b18189593", "fetched_at": "2026-08-29T07:57:17.977719+00:00", "kind": "site_page", "missing": false, "url": "https://www.mypy-lang.org/about.html"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_releases", "no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 5017, "days_push": 8, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 77, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}