cloudflare/miniflare
🔥 Fully-local simulator for Cloudflare Workers. For the latest version, see https://github.com/cloudflare/workers-sdk/tree/main/packages/miniflare. observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 11
- Release rhythm 8
- Longevity 100
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 1931
- days_rel: 695
- days_push: 538
- n_releases_24m: 1
Adoption not part of the score
3924 stars · 209 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Miniflare is a fully-local simulator for Cloudflare Workers written in TypeScript, running worker code in a sandbox that implements the Workers runtime APIs. It supports most Workers features including KV, Durable Objects, R2, D1, and WebSockets, and is now maintained as part of the workers-sdk monorepo.
Use cases
- develop and test Cloudflare Workers locally without internet
- run integration tests against Workers bindings like KV and Durable Objects
- simulate Workers runtime APIs offline
- hot-reload Worker code during local development
- test D1, R2, and KV storage locally before deploying
- build custom local dev tooling on top of the Workers runtime
When to choose
- you need a fully offline local environment for Cloudflare Workers
- you want to write automated integration tests for Workers
- you need programmatic control over the Workers runtime sandbox
- you're building tooling that embeds a Workers-like runtime
When to avoid
- you just want standard local development - use Wrangler instead
- you need exact production parity for edge behaviors not covered by the simulator
- you're not developing Cloudflare Workers at all
Facets
library · maturity active
testing http-server developer-tools simulation developer-tools web-development backend testing cross-platform cli cloudflare-workers local-development serverless kv durable-objects r2 d1 wrangler nodejs
10 sources
- readme: https://github.com/cloudflare/miniflare · fetched 2026-08-28 · 0a38fa706f01
- homepage: https://miniflare.dev · fetched 2026-08-29 · cc98d72909d9
- site_page: https://developers.cloudflare.com/workers/get-started/quickstarts · fetched 2026-08-29 · d87982daf15a
- site_page: https://developers.cloudflare.com/ · fetched 2026-08-29 · 1b8430a97c92
- site_page: https://developers.cloudflare.com/changelog · fetched 2026-08-29 · d22a1e616fbf
- site_page: https://developers.cloudflare.com/workers/configuration/integrations · fetched 2026-08-29 · 3eba5356cf69
- site_page: https://developers.cloudflare.com/workers/configuration/integrations/apis · fetched 2026-08-29 · cf5efbbb96c4
- site_page: https://developers.cloudflare.com/workers/configuration/integrations/external-services · fetched 2026-08-29 · da9f2b99b2fb
- site_page: https://developers.cloudflare.com/workers/ci-cd/builds/limits-and-pricing · fetched 2026-08-29 · 0eea4797aa81
- site_page: https://developers.cloudflare.com/secrets-store/integrations/workers · fetched 2026-08-29 · 3413f45988ee
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| cloudflare/miniflare | main | 10 |
For agents
markdown · JSON · MCP: product_card(name="cloudflare/miniflare")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem