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…
Halo – open-source, tamper-evident runtime evidence for AI agents launched on July 7, 2026 with 37 votes, #665 of 24,623 launches that month and more than 95% of that year's launches.
In plain words
Halo is an open-source tool that records and verifies what AI agents do when given access to company data. It creates tamper-evident runtime evidence of agent actions, addressing the problem that traditional audit logs and dashboards can be edited by vendors. The tool is designed for companies that deploy third-party AI agents and need independent verification of their behavior, particularly where standard compliance frameworks like SOC 2 may not adequately cover agentic software.
written from the facts on this page · September 2026
From the sources
Tamper-evident audit trails for AI agents: hash-chained Runtime Records, dependency-free, verifiable by anyone. - bkuan001/halo-record
In the maker’s words, at launch
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…
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