Show HN: I built a one-click coin flip with no ads or tracking https://ift.tt/sRwGJHF
Show HN: I built a one-click coin flip with no ads or tracking https://ift.tt/RQFgwec December 14, 2025 at 12:11PM
Show HN: Agent File (.af) – An open file format for agents https://ift.tt/fzI5HcG
Show HN: Agent File (.af) – An open file format for agents Hi HN - We’re building Agent File (.af), which makes it possible to re-create the exact same agent (including memories, tools, message history, configs, etc.) across different machines. A big difference between LLMs and agents is that agents have associated state: system prompts, editable memory (personality and user information), tool configurations (code and schemas), and LLM/embedding model settings. While you can run the same LLM as someone else by downloading the weights, there’s no “representation” of agents that allows you to re-create an instance of an agent across services. Agent File (.af) is an open standard file format for serializing stateful agents. Originally designed for the Letta framework, .af is a human-readable representation of all the associated state of an agent to reproduce the exact behavior and memories. To demonstrate .af, we also made a few example agents with download links to .af: - MemGPT: An agen...
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