Buzz for Devin

Buzz for Devin is a community-maintained fork of Block's Buzz that adds the official Devin CLI as a native ACP runtime.

Each person installs and authenticates Devin on their own computer. Buzz starts that local CLI with devin acp; it does not copy Devin credentials between users or machines.

• Source alpha
• Builder installation guide
• Devin integration notes
• Upstream proposal

What this fork adds

• A first-class Devin runtime in Buzz's existing ACP runtime catalog
• The standard devin acp launch command
• Readiness states for a missing CLI, unauthenticated CLI, ready CLI, and ACP startup failure
• Cognition's white-background Devin mark in Buzz's runtime icon system
• .devin/skills as the Devin skills directory
• Owner-only invocation and one worker by default

This integration does not enable permission bypasses or modify Devin configuration and credentials.

Install the macOS app

Buzz uses your existing authenticated official Devin CLI. Confirm it is ready under the same computer account that will run Buzz:

devin auth status

If devin is not found on macOS, Linux, or WSL, install it using Cognition's official installer, then open a new terminal:

curl -fsSL https://cli.devin.ai/install.sh | bash

If Devin is installed but unauthenticated, run devin auth login. Otherwise, no Devin setup is needed. The installer also checks the official ~/.local/bin location automatically.

On an Apple Silicon or Intel Mac, clone the reviewed source alpha and run the local installer:

cd "$HOME" &&
GIT_CONFIG_GLOBAL=/dev/null git clone \
  https://github.com/fenner888/BuzzforDevin.git BuzzforDevin-v0.5.2-alpha.1 &&
cd BuzzforDevin-v0.5.2-alpha.1 &&
git switch -c buzz-for-devin-v0.5.2-alpha.1 buzz-for-devin-v0.5.2-alpha.1 &&
./scripts/install-macos-source.sh

The first build normally takes 15–45 minutes depending on the Mac and requires approximately 15 GB of temporary free space. It builds the reviewed source for the Mac's native architecture, ad-hoc signs the result locally, and installs ~/Applications/Buzz for Devin.app. It does not require a paid Apple Developer account or bypass Gatekeeper. The installer opens the app automatically when the build completes; later launches do not recompile it. The commands are intentionally chained: if the public clone fails, checkout and installation do not continue in a partial directory.

The command-scoped GIT_CONFIG_GLOBAL=/dev/null bypasses local URL rewrites that can redirect public GitHub clones to git-manager.devin.ai. It does not modify credentials or permanent Git settings. A public clone never requires a username or password.

The installed app connects to an existing Buzz community selected during onboarding. A local relay and Docker are not required unless you want to self-host the complete Buzz stack.

To update to the current reviewed source release, repair the current installation, or uninstall the app:

./scripts/update-macos-source.sh buzz-for-devin-v0.5.2-alpha.1
./scripts/repair-macos-source.sh
./scripts/uninstall-buzz-for-devin-macos.sh

For a later release, copy its exact buzz-for-devin-v... tag from the Releases page and pass it as the updater's argument.

The update and repair paths preserve a recoverable previous app bundle. Uninstall moves the app to Trash and leaves Buzz data, Keychain entries, and Devin credentials untouched.

Run a cross-platform source preview

Linux and Windows builders can run the reviewed checkout directly:

./scripts/run-buzz-for-devin-source.sh

This development preview recompiles when launched and is not the installed macOS application described above. An unbundled macOS development executable can appear as a square Dock icon; the installed application uses the normal packaged Buzz icon.

Platform status

Platform	Status
Apple Silicon macOS	Locally installed source app and live Devin ACP acceptance available
Intel macOS	Locally installed source app available; live Devin ACP acceptance pending
Linux	Source preview available; live acceptance pending
Windows 11 x86_64	Source preview available through Git Bash; live acceptance pending

See the builder installation guide for platform prerequisites and the acceptance checklist. This repository publishes reviewed source, not a downloadable Developer ID-signed or notarized binary.

Current boundaries

Buzz for Devin provides the native local ACP connection. It does not claim model switching, Fusion, fan-out, Outposts, cloud handoff, or full cloud Devin parity. Devin permission requests remain explicit.

Development

Activate the repository's pinned toolchain before running project commands:

. ./bin/activate-hermit
just setup
just ci

The codebase retains Buzz's existing architecture. Contributor and architecture documentation remains available in the repository for developers changing the underlying Buzz system.

Issues and security

• Report fork-specific problems in Buzz for Devin issues.
• Follow SECURITY.md for security reports.
• Never include Devin credentials, private configuration, or unredacted private repository contents in an issue.

Upstream and license

This fork is based on Block's Buzz and is licensed under Apache 2.0. The Devin integration is maintained by the community and is not an official Block or Cognition release.