Bloom rebrands as Rainbrand, the brand layer for agents

RainbrandDealroom has a profile for this one. Try Dealroom →, the San Francisco-based company formerly known as Bloom (trybloom.ai), renamed itself on 15 October 2026 and moved to rainbrand.com. The company said the new name makes its focus clearer: a brand layer for agents. While building Bloom, it found that the shared brand context behind each output mattered more than any single output.

Founded in 2025 by Ray FitzgeraldDealroom has a profile for this one. Try Dealroom → (Founder and CEO), the company launched its first product, Bloom, in December 2025 as a tool for creating on-brand assets with AI. Fitzgerald previously founded Lucid, an AI-native word processor, and before that built fraud-prevention agents at Inscribe. After a pivot, the company relaunched Bloom through Y Combinator on 1 June 2026 as infrastructure that any agent, app or platform can call. It reported more than 175,000 on-brand assets generated for customers at that relaunch. As Rainbrand, it reports more than 500,000.

Rainbrand turns a brand's identity, guidance and assets into versioned, shared context. Agents such as Claude, ChatGPT, Codex and Cursor can use and update that context through MCP, and products can use it through a REST API, across images, websites, slides, video and copy. The company is part of Y Combinator's Spring 2026 batch. It has raised $1M in pre-seed funding: $500K led by NebularDealroom has a profile for this one. Try Dealroom → with Vercel founder Guillermo RauchDealroom has a profile for this one. Try Dealroom →, and $500K from Y Combinator. Its team has three people.

Read more:
https://www.rainbrand.com/changelog/

Sources: Rainbrand changelog, Y Combinator company page, Launch YC: Bloom, Work at a Startup: Rainbrand, Rainbrand on LinkedIn