# containerd/runwasi

Facilitates running Wasm / WASI workloads managed by containerd

Repository: https://github.com/containerd/runwasi
Canonical: https://ross.abutalabs.com/products/runwasi
Homepage: https://runwasi.dev/
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: containerd, kubernetes, rust, wasi, wasm, webassembly
Last push: 2026-08-26T15:10:52+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 88, longevity 100
- inputs: {"age_days": 1679, "days_push": 7, "days_rel": 82, "gap_med": 0.0, "n_releases_24m": 21}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1331, forks 130 (observed 2026-08-28T04:04:24.355947+00:00)

## What it is
A Rust library and set of containerd shims that let containerd run WebAssembly/WASI workloads directly or via Kubernetes through the CRI plugin. It ships shims for Wasmtime, WasmEdge, Wasmer, and WAMR runtimes.

## Use cases
- run wasm workloads in kubernetes pods
- run wasi modules with containerd and ctr
- build a custom containerd shim for a wasm host
- run webassembly containers instead of full VMs
- schedule wasm apps via kubelet CRI

## When to choose
- you want to run WASI workloads under containerd or Kubernetes
- you need a Rust library to integrate a wasm host with containerd
- you want to pick among Wasmtime, WasmEdge, Wasmer, or WAMR shims

## When to avoid
- you need general-purpose container orchestration without wasm
- you run wasm outside containerd/Kubernetes ecosystems
- you need a standalone wasm runtime CLI

## Facets
- artifact type: library
- maturity: active
- function: container-runtime, wasm, sdk, developer-tools
- domain: cloud-computing, developer-tools, infrastructure-as-code
- platform: rust, cloud
- tags: wasi, containerd-shim, wasmtime, wasmedge, wasmer, wamr, cri, serverless-wasm, cncf, containers, linux, kubernetes, docker

## Member repositories
- containerd/runwasi (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:24.355947+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 2026-08-30T04:45:15.706330+00:00, confidence not recorded.
  - readme: https://github.com/containerd/runwasi (fetched 2026-08-28T04:04:24.355947+00:00, sha ebff6c2b4bfe)
  - homepage: https://runwasi.dev/ (fetched 2026-08-29T12:04:22.069474+00:00, sha 673aaa3533c6)
  - site_page: https://runwasi.dev/getting-started/installation.html (fetched 2026-08-29T12:04:22.078363+00:00, sha 93f51e28b87b)
  - site_page: https://runwasi.dev/getting-started/demos.html (fetched 2026-08-29T12:04:22.080362+00:00, sha e0226f6a143e)
- Data as of 2026-08-30T08:39:29.467469+00:00.