--- title: Berd: The Most FUN Coding Agent YET! (By Creators of... description: Block (the company behind Square, Cash App, and the Goose coding agent) has open sourced Bird, a free desktop app that acts as a unified front-end for multiple... canonical: https://daily.dev/posts/berd-the-most-fun-coding-agent-yet-by-creators-of-goose-buzz--trzmv9vfh twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Berd: The Most FUN Coding Agent YET! (By Creators of Goose & Buzz) | daily.dev og:description: Block (the company behind Square, Cash App, and the Goose coding agent) has open sourced Bird, a free desktop app that acts as a unified front-end for multiple... og:url: https://daily.dev/posts/berd-the-most-fun-coding-agent-yet-by-creators-of-goose-buzz--trzmv9vfh og:image: https://api.daily.dev/og/posts/trZMV9VfH.png og:image:alt: Berd: The Most FUN Coding Agent YET! (By Creators of Goose & Buzz) og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Berd: The Most FUN Coding Agent YET! (By Creators of Goose & Buzz) **[AICodeKing](https://daily.dev/sources/aicodeking)** · 8 min read · 0 upvotes · 0 comments ## Summary Block (the company behind Square, Cash App, and the Goose coding agent) has open sourced Bird, a free desktop app that acts as a unified front-end for multiple AI coding agents including Claude Code, Codex, Copilot, AMP, Cursor Agent, and Goose. Instead of juggling separate CLI tools, users pick a harness and model from one app, which communicates with agents via the Agent Client Protocol (ACP). The app features quirky 3D mascot characters, an open canvas interface, preconfigured agent personas (Birdie, Copycat, Pushback, Choosy, Tinker, Wildcard), a skills system similar to Claude Code's, and project-based workflows tied to local folders. The reviewer walked through onboarding, installing harnesses (Claude Code setup failed, Codex worked fine), and building a sample movie-review web app with Codex using GPT 5.6 Soul. Overall impression: a promising, playful first release aimed at making CLI coding agents accessible to non-technical users, though still rough around the edges. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is Bird by Block and which AI coding agents does it support? Bird is a free, open source desktop app from Block (maker of Square, Cash App, and the Goose coding agent) that provides one unified interface for working with multiple AI coding agents. It supports Claude Code, Codex, Copilot, AMP, Cursor Agent, and Goose, letting users pick a harness and model instead of juggling separate CLI tools in different terminals. _daily.dev surfaces releases like this for developers comparing AI coding agent front-ends._ ### How does Bird connect to different AI coding agent CLIs like Claude Code and Codex? Bird communicates with agent harnesses through ACP, the Agent Client Protocol, meaning any agent that speaks ACP can plug into the app. Codex, for example, pulls in an ACP adapter into Bird's app data folder during installation, giving access to its full model list including reasoning-effort controls exposed directly in the UI. _Developers tracking agent protocol standards like ACP can follow updates on daily.dev._ ### Is Block's Bird coding agent app free and open source? Yes, Bird is fully open source under the Apache 2 license and completely free to use, available from bird.xyz or its GitHub repository. Users bring their own existing subscriptions or API keys for whichever agent harness they want to use, since Block does not charge anything for the app itself. _daily.dev helps developers weighing free versus paid AI coding tools stay informed on new options._ ## Similar posts on daily.dev - [GitHub takes aim at Claude Code and Codex with its new Copilot app](https://daily.dev/posts/github-takes-aim-at-claude-code-and-codex-with-its-new-copilot-app-u5mftvizf) · The New Stack · 0 upvotes · 0 comments - [We built an AI coding agent. Here's why we're sunsetting it.](https://daily.dev/posts/we-built-an-ai-coding-agent-here-s-why-we-re-sunsetting-it--63wlq6f1b) · Tinybird · 1 upvotes · 0 comments --- Tags: [#open-source](https://daily.dev/tags/open-source), [#ai-agents](https://daily.dev/tags/ai-agents) [View this post on daily.dev](https://daily.dev/posts/berd-the-most-fun-coding-agent-yet-by-creators-of-goose-buzz--trzmv9vfh) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Berd: The Most FUN Coding Agent YET! 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