Codex Adds Pets, Cursor Ships an SDK & Claude Connects to Blender and Ableton - This Week In AI

Shane and Abhi are in person at the CodeRabbit studio, and AISI just quietly torched one of Anthropic's loudest narratives. AISI confirmed GPT-5.5 is the second model to complete a multi-step cyber attack simulation end-to-end. The first was Mythos.    David Cramer calls TUIs "caveman shit." Kenzie at Browserbase builds an agent in under ten minutes that ranks every SF tech event by free food probability. Codex ships Tamagotchi-style pets. Apple accidentally leaves CLAUDE.md files in a support app update.   Cursor releases its SDK. OpenCode 2.0 becomes embeddable. Matt Pocock drops Sandcastle. Warp goes open source. The harnesses are becoming frameworks, and the frameworks are growing harnesses.   Anthropic Ships connectors for Blender. Claude Security enters public beta. /goal lands in Codex CLI as OpenAI's take on the Ralph loop.   OpenAI says GPT-5.5 is its strongest launch yet — API revenue 2x faster than any prior release, Codex revenue doubling in seven days. Vasuman posts an essay on why building real agents is harder than the hype suggests.   Open weights keep closing the gap. Kimi K2.6 beats Claude, GPT-5.5, and Gemini at a programming contest. Qwen3 6.27B takes the open weights crown under 150B parameters. Mistral Medium 3.5 lands as a 128B dense model with 256k context.   GitHub has a rough week. Wiz Research discloses an RCE achievable with a single git push.   Agents are becoming customers. Stripe Link is the wallet for agents. Cloudflare lets agents start paid subscriptions. Doola and Replit will form a US LLC inside the chat.   RAMP's coding agent now writes 70% of merged PRs. DeepSeek's input cache is 10x cheaper. Node 20 hits EOL, Zod prepares to drop CommonJS, and TypeScript native previews ship.   AI Agents Hour is a weekly livestream by Mastra CPO Shane Thomas and CTO Abhi Aiyer. Mondays, 12PM Pacific.   📚 READ MORE TUIs are caveman shit: https://x.com/zeeg/status/2050604116179845218 Free-food agent: https://x.com/kenziemac_dev/status/2050243146270007627 Pets in Codex: https://x.com/openaidevs/status/2050275713824211041 Pika Agents: https://x.com/pika_labs/status/2049196222825779287 Cursor SDK: https://x.com/cursor_ai/status/2049499866217185492 OpenCode 2.0: https://x.com/thdxr/status/2049523023145771476 Claude meets Blender: https://x.com/claudeai/status/2049143438281445811 Claude Security: https://x.com/claudeai/status/2049898739783897537 /goal in Codex: https://x.com/fcoury/status/2049917871799636201 GPT-5.5 numbers: https://x.com/OpenAI/status/2050250926888468929 AISI cyber sim: https://x.com/aisecurityinst/status/2049868227740565890 Vasuman essay: https://x.com/vasuman/status/2049659161005470071 Kimi K2.6 wins: https://thinkpol.ca/2026/04/30/an-open-weights-chinese-model-just-beat-claude-gpt-5-5-and-gemini-in-a-programming-challenge/ Qwen3 6.27B leader: https://x.com/artificialanlys/status/2049881951260283097 Mistral Medium 3.5: https://x.com/mistralvibe/status/2049511752379813968 GitHub RCE: https://x.com/wiz_io/status/2049153209982140718 Stripe Link: https://x.com/stripe/status/2049529444092838116 Cloudflare for agents: https://x.com/cloudflare/status/2049545195914498139 Editframe stealth: https://x.com/yudDIDit/status/2049888877129707759 RAMP 70% PRs: https://x.com/zachbruggeman/status/2049912136957386848 TS native previews: https://devblogs.microsoft.com/typescript/announcing-typescript-native-previews/   📚 MASTRA RESOURCES https://mastra.ai https://x.com/mastra_ai https://mastra.ai/community/discord https://github.com/mastra-ai https://mastra.ai/course https://mastra.ai/books/principles-of-building-ai-agents https://mastra.ai/books/patterns-of-building-ai-agents   WHAT IS MASTRA? Mastra is an open-source TypeScript framework designed for building and shipping AI-powered applications and agents with minimal friction. It supports the full lifecycle of agent development—from prototype to production. You can integrate it with frontend and backend stacks (e.g., React, Next.js, Node) or run agents as standalone services. If you're a JavaScript or TypeScript developer looking to build an agentic or AI-powered product without starting from first principles, Mastra provides the scaffolding, tools, and integrations to accelerate that process.   CHAPTERS 00:00 Intro 01:17 TUIs are caveman shit 03:33 The free-pizza agent 04:40 Pets, CLAUDE.md leak, goblins prompt 06:40 Pika Agents 07:34 Cursor SDK and OpenCode 2.0 09:30 Sandcastle and the AI factory debate 11:12 Warp goes open source 11:51 Anthropic Ships: Blender, Security 14:21 /goal in Codex CLI 15:21 GPT-5.5's strongest launch 17:18 AISI catches up to Mythos 17:53 Vasuman: why AI isn't working 20:44 Open weights close the gap 22:21 Mistral Medium 3.5 23:12 GitHub's rough week 24:06 Stripe, Cloudflare, Doola, Gumloop 27:13 Quick hits: music, voice, video 30:47 RAMP writes 70% of PRs 31:46 Node 20 EOL, Zod, TS7 32:45 Qwen3 + debugger, open-slide 34:29 FlueFramework 35:09 Outro