Vendo (YC S26) Open-Sourced a Layer That Lets Your Customers Build Features on Top of Your SaaS Without Filing a Ticket
GitHub / Y Combinator (Launch HN, Aug 20, 2026)·medium signal
Vendo launched on Hacker News on August 20 with 541 GitHub stars, Apache-2.0 licensed. It extracts your existing API into executable tools, has an agent compose UI into sandboxed iframes with restricted network access, and routes every action through a single Guard checkpoint handling policy, approvals, audit trail and access control. It runs on PGlite locally and Postgres in production, and targets the structural problem that kills B2B deals: the endless queue of bespoke feature requests the vendor cannot afford to build.