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Build an AI Agent from Scratch: Loops, Tools, Guardrails

This story is from 2026-10-23. It is preserved in the archive; the latest stories are on the live feed.

Most tutorials that teach you to build an AI agent start with installing a framework. This one starts with the opposite: a loop small enough to hold in your head. Anthropic puts it bluntly — agents are "typically just LLMs using tools based on environmental feedback in a loop." If you can call an L…

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  1. 2026-10-23 13:57 · DEV Community — AI
    Build an AI Agent from Scratch: Loops, Tools, Guardrails

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  1. Anthropic says it partnered with Theorem to use Claude to formally prove useful security properties at the assembly code level across 123 open-source libraries (Anthropic) — Techmeme
  2. Things will get ‘a lot worse before they get better’, experts warn amid AI security panic — The Independent Tech
  3. Anthropic strikes deal to launch European consultancy — Financial Times AI
  4. Anthropic Joins the A.I. Agent Race With Claude Duet — New York Times Technology
  5. Sources: Anthropic and London-based PE firm Hg agree to launch a consultancy by the end of 2026 to embed AI consultants and engineers into European businesses (Financial Times) — Techmeme
  6. KFlash: Benchmarks of newly released versions of Apple Silicon optimized engines: 1.4.0 Splash (DFlash2 ~ 50 tok/s) vs 0.2 Kapitsa (KFlash ~65 tok/s), MLX(MTP) & more on Qwen 3.8 27b/4b/35b 4Q on Macbook Pro M4 Pro 48 GB 2024, 48GB & Macbook Pro M1 Pro 16GB 2021 — r/LocalLLaMA
  7. For Coding : qwen 3.8 flash next coder vs iq3xxs, which is better ? — r/LocalLLM
  8. OpenAI donates Open Responses, its spec for a common LLM API, to the Agentic AI Foundation — The New Stack AI

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