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Vendo Launches Open-Source Customization Layer for B2B SaaS Products

🔄 Updated 1h ago
Aggregated by BrevFeed startups · updated 1h ago
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Key points

  • Vendo provides an open-source layer for user-built features.
  • It targets B2B SaaS products with bespoke feature requests.
  • The system uses an embedded agent acting through the product's API.
  • Custom UIs are rendered in a sandboxed, brand-native surface.

Introducing Vendo's Customization Layer

Vendo, a startup from Y Combinator's S26 batch, has released an open-source customization layer designed for B2B SaaS products. This layer enables end-users to create their own features and micro-applications directly within the host product's environment.

Addressing Bespoke Feature Requests

The primary purpose of Vendo is to assist B2B SaaS teams that frequently receive requests for custom or bespoke features from their customers. Instead of the SaaS provider developing every unique feature, Vendo allows customers to build these functionalities themselves.

How Vendo Operates

Vendo functions as an embedded agent within the host product. It interacts with the product's API as the signed-in user and generates UI elements that are rendered in a sandboxed, brand-native interface. The system ensures that the host product's source code remains untouched. Vendo extracts API information, generates views and user-owned apps, and guards execution through a controlled proxy.

Installation and Architecture

Installation involves an npm package and a command-line initialization. Vendo supports integration with AI SDK LanguageModels and uses PGlite for zero-config data storage, with production environments running on Postgres. The architecture includes components for API extraction, UI generation, and a guarded execution layer for security and policy enforcement.

✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →

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Primary sources

GitHub cmc_internal/api GitHub github/collect GitHub runvendo/vendo GitHub _private/browser GitHub get-started/accessibility GitHub open-source/sponsors

Reporting from

Hacker News Front Page — Launch HN: Vendo (YC S26) – Let users build features on top of your product 💬 Discuss on HN 4h ago →

Vendo, a Y Combinator S26 startup, has launched an open-source customization layer that allows users to build features and micro-applications directly on top of existing B2B SaaS products. This tool aims to help SaaS teams address requests for bespoke features by providing an embedded agent that interacts with a product's API and renders custom UI in a sandboxed environment.