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Show HN: Halo – open-source, tamper-evident runtime evidence for AI agents Hi HN, I'm Brian, I spent the last few years at Vanta (YC W18), helping startups and enterprises become compliant and I recently started exploring what that might look like in a post-agentic world. The problem Halo solves is: when a company buys an AI agent from a vendor and gives it access to their data, they have no way to check what the agent did with that data. Vendors may have built observability dashboards and audit logs, but those are editable and partisan. SOC 2 and ISO 27001 audit a company's controls, but controls are less predictive when the software is agentic. TLDR: give an agent the same prompt 50 times, and you get 50 slightly different actions/answers - so the only thing worth auditing in a post-agentic world is what happened at runtime. Halo is an open-source project that produces agent runtime evidence. It's a small recorder that records every action an agent takes (eg. tool calls, ...

Show HN: HTMLDrive – serve HTML files from your Google Drive I found that AI tools are generating excellent HTML documents nowadays, yet there's no easy way to show them to others. Yes, there's GitHub pages - but I don't know if it is user-friendly for non-technical people. This app allows you to keep your HTML file in your Google Drive and serve it from there. Feedback is most welcome. https://html-drive.com July 7, 2026 at 11:10PM

Show HN: Record, replay, and improve AI agents in production At the AI Engineering World's Fair a big part of the conversation was to nail the self improvement loop. Our take on this is to record state of the agent execution with a durable runtime, then allow users to replay from state checkpoints and run 'what-if' experiments. It's OSS and free to use. Would love some feedback from the community. https://ift.tt/a0pTgNS July 6, 2026 at 10:56PM

Handoff – a verified context bridge between Claude Code sessions https://ift.tt/yUz3OZc July 5, 2026 at 10:48PM

Show HN: I built an encrypted BLE dongle for pasting stuff to air-gapped devices Definitely one of those "20 minute adventure gone wrong" projects where all I wanted initially was a quick wireless rubber ducky for bitlocker keys and the like and then I kept adding stuff like AES-256..... Currently working on adding WebAuthn/FIDO support because the hardware is already there and scope creep is a lifestyle at this point. Would love feedback, especially on the security side. Repo and PCB files are fully open source. https://ift.tt/tKUTes1 July 5, 2026 at 02:43AM

Show HN: Typocalypse – An Arcade Typing Roguelike I created a small typing game. Would love to get some feedback on it. What can I improve? Are there any features you're missing? Are you having fun playing it? I certainly did have fun :) https://ift.tt/nueaNT2 July 5, 2026 at 12:58AM