Daily AI News for Vibe Coders — July 20, 2026 Hugging Face breached by an autonomous agent. OpenAI warns of 'long-horizon' model safety limits. The shift is moving from raw capabilities to autonomous system architecture and unit economics. (Link in replies)

Ashaveth, the Red. 13,000 hit points. 50 levels. 5 biomes. 72 monsters. Built this entirely with constraints and system logic. The full game is free right in your browser. No gate: (Link in replies)

The dragon remembers everything. Free browser RPG. Relics of the Erased Draft — 4 mythic uniques: • The Last Word • Ur, the First Edge • The Overwritten Crown • The Unerased 0.05% drop rate. 1 in 2,000. Only available while the AI narration engine is live. 18+. Play free at ashaveth.ddsboston.com

Free browser RPG with NPCs that remember. 3 characters tracked on 6 axes: affection, trust, respect, fear, attraction, manipulation. 6 stages: Stranger to Soulbound. Complete both arcs and enter the dragon's lair with the blade lowered. 18+. Play free at ashaveth.ddsboston.com

Free browser RPG. 3 endings. No score. No correct choice. Amber — the kill. Mercy — the walk. Writer — the third. 3 NPCs tracked on 6 relationship axes. They keep journals. The ending quotes them back to you. 18+. No download. Play free at ashaveth.ddsboston.com

Free browser RPG. No download. No signup. The Godsbane — the only blade that harms the final boss. Cannot be bought. Forged by Vosk in 4 gated stages. 2.5x damage to the Red. The final quench permanently costs 10% of your max HP. 18+. Play free at ashaveth.ddsboston.com

Update Claude Code today. 2.1.210 fixes subagents escaping worktree isolation. 2.1.211 fixes a caching bug overbilling Bedrock and Vertex. Full breakdown on the free academy blog: (Link in replies)

Today's agent plumbing updates. Claude Managed Agents add session overrides so you don't have to redeploy to test prompt tweaks. Full lifecycle webhooks kill polling. Gemini 3.5 Flash hits GA. Read the daily brief at Vibe Code Academy. (Link in replies)

The builder stack shifted. OpenAI released GPT-5.6 (Sol, Terra, Luna). Anthropic fixed the Claude Code MCP timeout bug. Gemini 3.5 Pro targets July 17. Details and the daily build tip are ready below. (Link in replies)

The agent plumbing moved over the weekend. Anthropic shifted MCP tunnels to /v1/tunnels and fixed the 60s server timeout. Claude Sonnet 5 is the Claude Code default. Google opened Gemini Managed Agents in preview, and Genkit added Python. Technical breakdown and URL below. (Link in replies)

The agent stack shifted. Claude Agent SDK added 3-level subagent spawning and fallback chains. OpenAI launched GPT-5.6 (Sol, Terra, Luna) publicly. I broke down what shipped, including a build tip to wrap a tool call in a two-level subagent. Link below. (Link in replies)

Anthropic shipped Claude Agent SDK v0.2.114 with dynamic MCP roots for cleaner sandboxing. Firebase Genkit added Python support. I broke down what changed and a Claude Code MCP build you can ship today. Free, no gate. (Link in replies)

Claude Agent SDK shipped MCP tunnels and subagent spawning. Firebase Studio templates default to autonomous Agent mode with Genkit, and Shopify turned on its Universal Commerce Protocol. Here is the technical breakdown of the new primitives. Free, no gate: (Link in replies)

Claude SDK adds subagents and private MCP tunnels. Sonnet 5 is Free/Pro default. Shopify agents are self-serve, and Firebase gets Genkit Python support. Full breakdown: (Link in replies)

Firebase Studio adds native MCP. Claude Agent SDK deprecates old skill configs. OpenAI runs GPT-5.6 Sol on Cerebras at 750 tps. Today's build: connect a private MCP server with the tunnels preview. Full brief is (Link in replies)

Claude Sonnet 5 is now default on Claude.ai and Claude Code, bringing near-Opus capabilities at Sonnet pricing. Copilot GA'd Sonnet 5, and Fable 5/Mythos 5 returned after export control lifts. Today's build challenge: benchmark Sonnet 5 on a real ticket. Free, no gate. (Link in replies)

Shopify Scripts are dead. Plus stores lose custom discount and shipping logic quietly unless migrated to Functions. Also: Anthropic ships a Claude Code gateway for Bedrock/GCP, and Google ADK Go hits 2.0. Full breakdown and build challenge. Free, no gate. (Link in replies)

Infrastructure shifts today: Anthropic moved tool execution to self-hosted sandboxes. Shopify deprecated the Catalog REST API for a Global Catalog MCP. I wrote a brief on how to query your Shopify catalog like an agent. Free, no gate: (Link in replies)

OpenAI previews GPT-5.6. Terra matches 5.5 at half price. GLM-5.2 hits Ollama Cloud under an MIT license with zero data retention. Gemini 3.5 Pro slips to July. Takeaway: wire a model-swap config so migration is a one-line change. Free, no gate: (Link in replies)

Gemini 3.5 Pro GA is late, OpenAI has a new inference chip, and markets price GPT-5.6 odds at 83%. If you target Gemini or Firebase, pin your app to a shipped model today and feature-flag the swap. Full daily brief, free: (Link in replies)

Today's AI brief: Claude Tag puts a shared agent in Slack running Opus 4.8. Claude Code adds credential blocking and a 5-minute MCP abort. Google Imagen is retired. Build of the day: harden your Claude Code config. Free, no gate: (Link in replies)

Tooling changes today. Google Imagen shuts down. Migrate to Gemini Nano Banana or wire fallbacks. GitHub Copilot for JetBrains supports Claude (requires Claude Code CLI path mapping). Fable 5 now costs credits. Read the post: (Link in replies)

Fable 5 is metered today at $10/$50 per M tokens. Route standard calls back to Opus 4.8. Also covering Claude private MCP, Astral acquisition, and Gemini 3.5 Pro. Read (Link in replies)

Vibe coder brief (June 19): - Anthropic signals Fable 5/Mythos 5 could return in days. - Korean enterprises deploy Claude Code/Cowork at scale. - MiniMax pitches open-weight M3. - Build: write model-fallback routing so a pulled model doesn't crash your agent loop. (Link in replies)

Writing HTML & CSS by hand for landing pages is slow. The real skill is directing system logic—using structural constraints so Claude generates clean, semantic layouts that convert. Class 28 is a complete masterclass on building landing pages with Claude.

Daily AI brief for vibe coders (June 12, 2026): Three critical platform deprecations/billing updates: - Headless Agent SDK Billing Split (June 15) - Firebase Gemini CLI Cutoff (June 18) - Google Imagen Shutdown (June 24) Read: ddsboston.com/blogs/vibe-c...

Claude Fable 5 is Anthropic's first public Mythos-class model, built for complex, autonomous workflows. I've published a free masterclass at the DDS Vibe Academy covering effort control, subagents, memory systems, and pricing. (Link in replies) Robert McCullock Design Delight Studio, Boston

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I built a 31-class AI coding academy without writing a single line of code. Claude Opus 4.7 authored it. Google Antigravity deployed it. Cowork audited it. All 31 classes on Ollama, Claude Code, and Sovereign Stacks are free. No signup. ddsboston.com/pages/dds-vi...