what is

Definitions, precise enough to cite.

The terms behind the agent-era backend, each defined in a 40-60-word capsule an engine or an agent can lift verbatim — then earned with honest depth: falsifiable tests, fair multi-vendor tables that concede where every option wins, and a plain statement of when the defined thing is not the right call.

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Hand the docs to your agent.
Ship by lunch.

Read the docs