--- title: Blue Checkmark Coding Agents, Simulated DoorDash Orders,... description: Issue #50 of The React Native Rewind newsletter covers three main topics: Grok Build, xAI's new terminal-based coding agent (a Claude Code alternative usable... canonical: https://daily.dev/posts/blue-checkmark-coding-agents-simulated-doordash-orders-and-a-cyberpunk-wizard-of-oz-6llarvilv twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Blue Checkmark Coding Agents, Simulated DoorDash Orders, and a Cyberpunk Wizard of Oz | daily.dev og:description: Issue #50 of The React Native Rewind newsletter covers three main topics: Grok Build, xAI's new terminal-based coding agent (a Claude Code alternative usable... og:url: https://daily.dev/posts/blue-checkmark-coding-agents-simulated-doordash-orders-and-a-cyberpunk-wizard-of-oz-6llarvilv og:image: https://api.daily.dev/og/posts/6llarVilv.png og:image:alt: Blue Checkmark Coding Agents, Simulated DoorDash Orders, and a Cyberpunk Wizard of Oz 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. # Blue Checkmark Coding Agents, Simulated DoorDash Orders, and a Cyberpunk Wizard of Oz **[ITNEXT](https://daily.dev/sources/itnext)** · 8 min read · 1 upvotes · 0 comments ## Summary Issue #50 of The React Native Rewind newsletter covers three main topics: Grok Build, xAI's new terminal-based coding agent (a Claude Code alternative usable with an X Premium subscription); Maestro MCP, which lets AI coding agents drive iOS/Android simulators to verify and test features they just built; and Appless, an open-source experiment from Thesys that replaces traditional mobile apps with AI-generated native UI streamed via openui-lang. The newsletter also touches on the broader trend of development consolidating into a single chat interface powered by MCP servers, and reflects on how AI is reshaping the relevance of deep framework knowledge. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I install Grok Build, the terminal coding agent from xAI? Grok Build is installed via a curl or PowerShell command from x.ai's CLI installer (curl -fsSL https://x.ai/cli/install.sh | bash for macOS/Linux, or irm https://x.ai/cli/install.ps1 | iex for Windows), then run with the `grok` command. It functions similarly to Claude Code, letting you complete coding tasks and plan features from the terminal, and can be used via an X Premium subscription instead of paying separately for Claude Pro or Codex. _Developers comparing coding agent subscriptions can track new terminal-based tools like Grok Build on daily.dev._ ### How do I add Maestro MCP to Claude Code for automated mobile app testing? Add it with the one-line command `mcp add maestro -- maestro mcp`, part of the Maestro CLI. This gives Claude Code, Cursor, Codex, Copilot, or Gemini access to an iOS simulator, Android emulator, or physical Android device, letting the agent tap through app flows, take screenshots, and save the interaction as a repeatable end-to-end test. _Teams building agent-driven QA workflows can follow tools like Maestro MCP on daily.dev._ ### Why does Maestro handle test synchronization differently than Detox for React Native apps? Maestro avoids modeling app 'idle' state entirely, instead polling the accessibility tree until an expected element appears or a timeout occurs. Detox instead detects idle state by tracking pending network requests, timers, animations, and JS work, which can fail with Reanimated worklets on the UI thread, WebSockets, or polling, causing it to falsely appear busy forever or idle when it isn't. _Developers weighing Maestro against Detox for React Native testing can compare trade-offs on daily.dev._ ## Similar posts on daily.dev - [AI layoffs are here, the MCP vs API debate, and the rise of the Mac Mini-powered Agent](https://daily.dev/posts/ai-layoffs-are-here-the-mcp-vs-api-debate-and-the-rise-of-the-mac-mini-powered-agent-v3mobo1h4) · The New Stack · 1 upvotes · 0 comments - [EAS Cloud iPhones, Automated Screenshot Pipelines, and Nuking Every Simulator You Ever Loved](https://daily.dev/posts/eas-cloud-iphones-automated-screenshot-pipelines-and-nuking-every-simulator-you-ever-loved-gfubtxcjz) · ITNEXT · 0 upvotes · 0 comments - [Issue 744 – iOS Dev Weekly](https://daily.dev/posts/issue-744-ios-dev-weekly-heaqgwxyz) · iOS Dev Weekly · 1 upvotes · 0 comments --- Tags: [#testing](https://daily.dev/tags/testing), [#ai-agents](https://daily.dev/tags/ai-agents), [#react-native](https://daily.dev/tags/react-native), [#mcp](https://daily.dev/tags/mcp) [View this post on daily.dev](https://daily.dev/posts/blue-checkmark-coding-agents-simulated-doordash-orders-and-a-cyberpunk-wizard-of-oz-6llarvilv) ```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":"Blue Checkmark Coding Agents, Simulated DoorDash Orders, and a Cyberpunk Wizard of Oz","url":"https://daily.dev/posts/blue-checkmark-coding-agents-simulated-doordash-orders-and-a-cyberpunk-wizard-of-oz-6llarvilv","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/blue-checkmark-coding-agents-simulated-doordash-orders-and-a-cyberpunk-wizard-of-oz-6llarvilv"},"datePublished":"2026-07-22T22:42:10.011Z","dateModified":"2026-09-14T06:15:19.355Z","description":"Issue #50 of The React Native Rewind newsletter covers three main topics: Grok Build, xAI's new terminal-based coding agent (a Claude Code alternative usable...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9c9768ef7b66d2e153fce654e6371a2c?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/9c9768ef7b66d2e153fce654e6371a2c?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"ITNEXT","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ITNEXT","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/itnext2","url":"https://daily.dev/sources/itnext"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/blue-checkmark-coding-agents-simulated-doordash-orders-and-a-cyberpunk-wizard-of-oz-6llarvilv","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"testing,ai-agents,react-native,mcp","timeRequired":"PT8M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ITNEXT","item":"https://daily.dev/sources/itnext"},{"@type":"ListItem","position":3,"name":"Blue Checkmark Coding Agents, Simulated DoorDash Orders, and a Cyberpunk Wizard of Oz"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/blue-checkmark-coding-agents-simulated-doordash-orders-and-a-cyberpunk-wizard-of-oz-6llarvilv#faq","mainEntity":[{"@type":"Question","name":"How do I install Grok Build, the terminal coding agent from xAI?","acceptedAnswer":{"@type":"Answer","text":"Grok Build is installed via a curl or PowerShell command from x.ai's CLI installer (curl -fsSL https://x.ai/cli/install.sh | bash for macOS/Linux, or irm https://x.ai/cli/install.ps1 | iex for Windows), then run with the `grok` command. It functions similarly to Claude Code, letting you complete coding tasks and plan features from the terminal, and can be used via an X Premium subscription instead of paying separately for Claude Pro or Codex. Developers comparing coding agent subscriptions can track new terminal-based tools like Grok Build on daily.dev."}},{"@type":"Question","name":"How do I add Maestro MCP to Claude Code for automated mobile app testing?","acceptedAnswer":{"@type":"Answer","text":"Add it with the one-line command `mcp add maestro -- maestro mcp`, part of the Maestro CLI. This gives Claude Code, Cursor, Codex, Copilot, or Gemini access to an iOS simulator, Android emulator, or physical Android device, letting the agent tap through app flows, take screenshots, and save the interaction as a repeatable end-to-end test. 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