Pebblebed

Pebblebed is a pre-seed and seed-stage venture capital firm based in San Francisco. It leads investment rounds, writing checks typically ranging from $2 million to $5 million, and makes about 20 investments per fund. The firm was founded by builders and concentrates on technical founders pursuing what it terms "self-protecting ideas" - concepts that are simple to describe, difficult to execute, and valuable because most people walk away.

Investment focus spans a defined set of technical verticals: software creation, computing and infrastructure, reasoning and trust, robotics, health, materials and creative tools. Team experience covers engineering, AI, research and company building, and the firm positions itself as "builders investing in builders" - the argument being that technical founders benefit from working with technical investors at the earliest stages.

The firm operates from a San Francisco warehouse workspace, sometimes home to robots, used as a shared working environment for founders and technologists and as a venue for events aimed at the technical community. Alongside capital, Pebblebed describes its role as connecting technically ambitious founders with a community of curious technologists.