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Introduction

Brixel is a platform for creating AI agents called Builders. Each Builder is an agent you interact with through a chat interface, designed to handle real workflows end to end.

Why Brixel is different​

Brixel’s uniqueness comes from how it provides tools to the agent. In Brixel, these tools follow a shared contract and can be combined safely, which makes the whole system composable.

Tool types​

  • Actions
    Monolithic, ready-to-use tools (e.g., "Send an email").
  • Artifacts
    Visual tools that introduce human interaction or display results directly in the chat.
  • Procedures
    Compositions of tools (e.g., "Download the Word document and convert it to PDF"). A procedure can include other procedures and executes like code.
  • Variants
    Tools customized by a user to change their parameters.
  • Toolboxes
    Referenced collections of tools that keep the Builder context lightweight. They let the agent resolve one specific tool or combine several tools as a command-line-style chain without exposing every tool directly in the active prompt.

Knowledges (context for Builders)​

Builders can access Knowledges to be more relevant in conversation and execution:

  • Abilities
    Procedural guidance the Builder can apply on its own while solving requests.
  • Commands
    Procedural guidance that is triggered only when the user explicitly asks for it in chat.
  • Documents
    Files transformed into embeddings for contextual retrieval.
  • Memories
    An evolving memory of user preferences, projects, and habits (if enabled).

Scale and composability​

Because of this architecture, a Builder can trigger and combine 1,000+ tools to solve real workflows end to end.

Brixel is a platform for building unique agents and a chat experience with advanced interactions.