# verus-lang/verus

Verified Rust for low-level systems code

Repository: https://github.com/verus-lang/verus
Canonical: https://ross.abutalabs.com/products/verus
Language: Rust
License: MIT
License Family: permissive
Last push: 2026-08-26T22:14:30+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 1779, "days_push": 7, "days_rel": 10, "gap_med": 6.0, "n_releases_24m": 81}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2890, forks 210 (observed 2026-08-28T04:07:28.315285+00:00)

## What it is
Verus is a verification tool for statically proving the correctness of Rust code against developer-written specifications, using SMT solvers instead of runtime checks. It supports a subset of Rust, including low-level patterns like raw pointer manipulation, and is under active development.

## Use cases
- formally verify rust code correctness
- prove low-level systems code has no bugs
- statically verify unsafe rust pointer manipulation
- write machine-checked specifications for rust functions
- verify concurrent or systems software in rust

## When to choose
- you need mathematical guarantees that Rust code meets its specifications
- you are writing safety- or security-critical low-level systems code
- you want to verify code beyond what the Rust type system can check

## When to avoid
- you need full Rust support - Verus only covers a subset of the language
- you want a quick linting or testing tool rather than heavyweight formal verification
- you need polished, complete documentation - it is still a work in progress

## Facets
- artifact type: library
- maturity: active
- function: testing, type-system, developer-tools
- domain: programming-languages, developer-tools, security
- platform: rust, windows, cli
- tags: formal-verification, static-analysis, smt-solvers, program-proofs, verified-rust, algorithms, linux, macos

## Member repositories
- verus-lang/verus (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:28.315285+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:35:20.828476+00:00, confidence not recorded.
  - readme: https://github.com/verus-lang/verus (fetched 2026-08-28T04:07:28.315285+00:00, sha 5cdf2e33040f)
  - registry_crates: https://crates.io/api/v1/crates/verus (fetched 2026-08-29T09:50:28.571620+00:00, sha 3916ab55703f)
- Data as of 2026-08-30T08:39:29.467469+00:00.