Environment
Everything outside the model that an agent can observe or change through its tools.
Illustrative conversation
- The repository exists on the machine, so why can the agent not inspect it?
- That directory is outside the environment exposed by its current harness and sandbox.
Definition
An agent's environment is the external state it can interact with: repositories, processes, browsers, services, databases, devices, or remote systems. The model does not perceive that world directly. The harness exposes selected observations through context and tools, executes authorized actions, and returns results. Two agents can therefore face very different environments even when they use the same model.
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