# CosmWasm/cosmwasm

WebAssembly Smart Contracts for the Cosmos SDK

Repository: https://github.com/CosmWasm/cosmwasm
Canonical: https://ross.abutalabs.com/products/cosmwasm
Homepage: https://www.cosmwasm.com
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: cosmos-sdk, rust, smart-contracts, webassembly
Last push: 2026-08-25T09:58:56+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 91, longevity 100
- inputs: {"age_days": 2528, "days_push": 8, "days_rel": 63, "gap_med": 2.5, "n_releases_24m": 37}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1145, forks 415 (observed 2026-08-28T04:03:45.658997+00:00)

## What it is
CosmWasm is a set of Rust crates providing the standard library for writing WebAssembly smart contracts on Cosmos SDK blockchains. It enables secure, type-safe, multi-chain smart contract development with native IBC interoperability.

## Use cases
- write smart contracts for Cosmos blockchains in Rust
- build cross-chain dApps using IBC
- develop secure DeFi protocols resistant to reentrancy attacks
- generate JSON schemas for smart contracts
- verify and check compiled wasm contract blobs
- unit and integration test smart contract business logic

## When to choose
- you are building smart contracts on Cosmos SDK chains
- you need native inter-blockchain communication via IBC
- you want Rust's type safety and testing tooling over Solidity
- you need multi-chain contract deployment from one codebase

## When to avoid
- you are targeting EVM/Solidity chains like Ethereum
- you need contracts outside the Cosmos ecosystem
- you want a high-level language other than Rust for contract development

## Facets
- artifact type: library
- maturity: active
- function: sdk, cryptography, serialization, testing
- domain: blockchain, developer-tools, cross-platform
- platform: rust, wasm, cross-platform
- tags: cosmos-sdk, smart-contracts, webassembly, ibc, defi, rust-crates, cryptocurrency

## Member repositories
- CosmWasm/cosmwasm (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:45.658997+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 2026-08-30T06:34:14.871579+00:00, confidence not recorded.
  - readme: https://github.com/CosmWasm/cosmwasm (fetched 2026-08-28T04:03:45.658997+00:00, sha b13d782bdd91)
  - homepage: https://www.cosmwasm.com (fetched 2026-08-29T12:39:34.397807+00:00, sha e30bf370c532)
  - site_page: https://www.cosmwasm.com/about (fetched 2026-08-29T12:39:34.407199+00:00, sha d966ffb98bd6)
  - registry_crates: https://crates.io/api/v1/crates/cosmwasm (fetched 2026-08-29T12:39:34.410154+00:00, sha 153e5f22f911)
- Data as of 2026-08-30T08:39:29.467469+00:00.