# crytic/slither

Static Analyzer for Solidity and Vyper

Repository: https://github.com/crytic/slither
Canonical: https://ross.abutalabs.com/products/slither
Homepage: https://blog.trailofbits.com/2018/10/19/slither-a-solidity-static-analysis-framework/
Language: Python
License: AGPL-3.0
License Family: copyleft
Topics: solidity, ethereum, static-analysis, vyper
Last push: 2026-08-26T22:54:54+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 83, longevity 100
- inputs: {"age_days": 2919, "days_push": 7, "days_rel": 36, "gap_med": 35.5, "n_releases_24m": 7}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6352, forks 1132 (observed 2026-08-28T04:09:42.770786+00:00)

## What it is
Slither is a Python-based static analysis framework for Solidity and Vyper smart contracts. It runs vulnerability detectors, prints contract information, and offers an API for writing custom analyses.

## Use cases
- find vulnerabilities in solidity smart contracts
- detect reentrancy in ethereum contracts
- run static analysis on vyper contracts
- integrate smart contract security checks into CI
- write custom static analysis detectors for solidity
- audit smart contracts before deployment

## When to choose
- you develop or audit Solidity/Vyper smart contracts and want fast, low-false-positive vulnerability detection
- you need CI integration for smart contract security checks
- you want to prototype custom contract analyses via a Python API

## When to avoid
- you need dynamic analysis, fuzzing, or formal verification rather than static analysis
- your project targets non-EVM smart contract languages

## Facets
- artifact type: cli-tool
- maturity: active
- function: security, vulnerability-scanning, static-site-generator, cli, developer-tools
- domain: blockchain, security, developer-tools
- platform: python, cli, cross-platform
- tags: solidity, vyper, static-analysis, ethereum, smart-contract-security, slithir, detectors, ci-integration, smart-contracts

## Member repositories
- crytic/slither (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:42.770786+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 2026-08-29T17:46:06.069602+00:00, confidence not recorded.
  - readme: https://github.com/crytic/slither (fetched 2026-08-28T04:09:42.770786+00:00, sha c641e190de5a)
  - homepage: https://blog.trailofbits.com/2018/10/19/slither-a-solidity-static-analysis-framework/ (fetched 2026-08-29T08:42:15.771797+00:00, sha d8f4413d4010)
- Data as of 2026-08-30T08:39:29.467469+00:00.