{"adoption": {"forks": 304, "observed_at": "2026-08-28T04:04:37.851955+00:00", "stars": 1403}, "canonical_url": "https://ross.abutalabs.com/products/schemars", "card": {"archived": false, "artifact_type": "library", "description": "Generate JSON Schema documents from Rust code", "domain": ["developer-tools", "apis", "backend"], "enriched": true, "function": ["serialization", "developer-tools"], "health_score": 97, "homepage": "https://graham.cool/schemars/", "language": "Rust", "license": "MIT", "license_family": "permissive", "maturity": "stable", "member_repos": ["GREsau/schemars"], "name": "GREsau/schemars", "platform": ["rust", "cross-platform"], "pushed_at": "2026-07-27T14:36:11+00:00", "repo": "GREsau/schemars", "stars": 1403, "tags": ["-schema", "serde", "derive-macro", "schema-generation"], "topics": ["json-schema", "rust", "serde"], "urls": [], "use_cases": ["generate  schema from rust structs", "validate  payloads against rust types", "document serde serialization formats", "generate openapi schemas for rust api types", "produce  schema for config file formats", "keep  schema in sync with serde attributes"], "what_it_is": "Schemars is a Rust library that generates JSON Schema documents from Rust types via a JsonSchema trait and #[derive(JsonSchema)] macro. It is designed to stay compatible with Serde, honoring #[serde(...)] attributes so generated schemas match serde_ serialization behavior.", "when_to_avoid": ["you need JSON Schema from non-Rust sources", "you need OpenAPI document generation itself rather than raw schemas", "your project is not in the Rust ecosystem"], "when_to_choose": ["you write Rust and need JSON Schema documents matching your serde types", "you want schema generation via a simple derive macro", "you need serde attribute compatibility (rename, skip, flatten, etc.)", "you need no_std support or integrations with chrono, uuid, bytes and similar crates"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/schemars", "repo": "GREsau/schemars", "role": "main", "score": 96}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:04:37.851955+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T04:38:53.158898+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "ed0162de81dfcde8d6a8ce3d45cf648e58a5a08cbcc9fa0e15cc80ad660542ff", "fetched_at": "2026-08-28T04:04:37.851955+00:00", "kind": "readme", "missing": false, "url": "https://github.com/GREsau/schemars"}, {"content_hash": "8a3a80c67d8e7a5f5d5731e8c9912d01edb5d6463933a8804f1685993a0acb08", "fetched_at": "2026-08-29T11:52:46.451134+00:00", "kind": "homepage", "missing": false, "url": "https://graham.cool/schemars/"}, {"content_hash": "f44a4a8f93838b2183b768955b74ced085018621bccc18bb621364926d5ba55f", "fetched_at": "2026-08-29T11:52:46.460291+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/features"}, {"content_hash": "58787425015be38893ce8aa4b0a1666240665ca07cf9f203c26b6657480127b2", "fetched_at": "2026-08-29T11:52:46.462368+00:00", "kind": "site_page", "missing": false, "url": "https://graham.cool/schemars/v0/features"}, {"content_hash": "ccca2b8795de64c57b6ff77b5f73ab4b0af49289a10980e7f539d2077692fc31", "fetched_at": "2026-08-29T11:52:46.464088+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/schemars"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 94, "longevity": 100, "rhythm": 95}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 2586, "days_push": 37, "days_rel": 37, "gap_med": 27, "n_releases_24m": 12}, "score": 96, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}