{"adoption": {"forks": 168, "observed_at": "2026-08-28T04:07:56.929095+00:00", "stars": 3342}, "canonical_url": "https://ross.abutalabs.com/products/kani", "card": {"archived": false, "artifact_type": "cli-tool", "description": "Kani Rust Verifier", "domain": ["developer-tools", "programming-languages", "testing", "security"], "enriched": true, "function": ["testing", "fuzzing", "security", "developer-tools"], "health_score": 97, "homepage": "https://model-checking.github.io/kani", "language": "Rust", "license": "Apache-2.0", "license_family": "permissive", "maturity": "active", "member_repos": ["model-checking/kani"], "name": "model-checking/kani", "platform": ["rust", "cli"], "pushed_at": "2026-08-26T21:25:29+00:00", "repo": "model-checking/kani", "stars": 3342, "tags": ["model-checking", "formal-verification", "rust-verifier", "cbmc", "undefined-behavior-detection", "proof-harnesses", "function-contracts", "linux", "macos"], "topics": ["rust", "model-checking", "verification"], "urls": [], "use_cases": ["verify unsafe Rust code for undefined behavior", "prove that a function satisfies a specification for all inputs", "check for arithmetic overflows and panics in Rust code", "formally verify Rust library correctness with proof harnesses", "add formal verification to Rust CI pipelines", "find counterexamples where Rust code violates assertions"], "what_it_is": "Kani is a bit-precise model checker for Rust that formally verifies safety and correctness properties of Rust programs. It uses proof harnesses with nondeterministic inputs to prove properties across all possible values, detecting undefined behavior, panics, and arithmetic overflows, especially in unsafe code.", "when_to_avoid": ["your code relies heavily on concurrency, which Kani does not yet support", "you need fast runtime checks rather than potentially resource-intensive proofs", "your project uses very new Rust features not yet supported by Kani", "you only need simple unit or integration testing"], "when_to_choose": ["you need mathematical proof that Rust code is correct for all inputs, not just tested cases", "you are writing unsafe Rust and want automated undefined-behavior checks", "you want property-based verification stronger than fuzzing or testing", "you want to verify function contracts and assertions exhaustively"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/kani", "repo": "model-checking/kani", "role": "main", "score": 83}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:07:56.929095+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T18:41:03.599123+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "f00f4178c6a9d39d39962cab5c7307108a04d845802888942c0d4384fbbca597", "fetched_at": "2026-08-28T04:07:56.929095+00:00", "kind": "readme", "missing": false, "url": "https://github.com/model-checking/kani"}, {"content_hash": "d979bde7b46a4a5803dc4174bbf141b508f43b4b607f46e7e2a02da871fc56bc", "fetched_at": "2026-08-29T09:34:14.443304+00:00", "kind": "homepage", "missing": false, "url": "https://model-checking.github.io/kani"}, {"content_hash": "dc36a214e6906d140dd73d1b6edb492c77ed877a9c7e71d1a6afc3ef6fd3b2e2", "fetched_at": "2026-08-29T09:34:14.445725+00:00", "kind": "registry_crates", "missing": false, "url": "https://crates.io/api/v1/crates/kani"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 54}, "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": 1986, "days_push": 7, "days_rel": 229, "gap_med": 31.5, "n_releases_24m": 13}, "score": 83, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}