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Builder.io open-sources Agent-Native: one action for UI, agents, MCP

Builder.io’s Agent-Native TypeScript framework lets you define typed actions once and expose them to React UIs, agents, HTTP, CLI, A2A, and MCP. The repo hit GitHub Trending around Sept 21 with several thousand stars; deployed apps can serve a Streamable HTTP MCP endpoint at /mcp.

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Amazon blocks Meta's Muse agent from shopping on Amazon.com

Amazon cut off Meta’s Muse personal AI agent from shopping on Amazon.com after Meta declined to exclude the store, citing Conditions of Use and concerns that the agent browses without identifying itself while using stored customer credentials. The move follows Amazon’s lost Perplexity injunction and tests whether platforms can fence out outside agents via contract terms rather than anti hacking law…

GeekWire

Xiaomi open-sources MiMo-V2.6 Pro and Flash after mixed RL run

Xiaomi published MiMo V2.6 Pro (1.02T MoE / 42B active) and Flash (309B / 15B active) on Hugging Face with text/image/video/audio inputs and a 1M token context, plus RL training resources. Vendor figures say Pro rose from 58.4 to 72.57 on DeepSWE v1.1 after one mixed coding/agent/visual/cyber RL run; independent replication is still pending…

Hugging Face

GitHub Copilot rolls out Grok 4.7 for agentic coding

GitHub is gradually rolling out xAI’s Grok 4.7 in Copilot Pro through Enterprise, including VS Code, JetBrains, Copilot CLI, and the cloud agent. It bills at provider list pricing under usage based billing; Business/Enterprise admins can gate it via model policy…

GitHub Changelog

Linear: AI coding made CI the bottleneck, so they reworked it

Linear’s Sept 21 engineering post says agents now write most of its tests ( 2,000/week) and the suite nearly quadrupled in 2026. Faster runners, tsgo, less setup, and Vitest shard tweaks cut runner time per test roughly in half and trimmed PR wait from 6 minutes to just over 5…

Linear

Mintlify docs expose WebMCP tools for browser agents

Mintlify Pro+ docs sites now auto expose five WebMCP tools ( search docs , read page , get site overview , read skill , navigate page ) so browser agents can query and read docs as structured calls instead of scraping the UI. Chrome plans default WebMCP support in Chrome 157 (early November)…

Mintlify

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