GenAgentEnsemble.Backends.Echo (gen_agent_ensemble v0.2.0)

A trivial always-compiled GenAgent.Backend for demos and iex experimentation.

Each prompt turn emits a single :result event whose text is derived from the prompt. No external dependencies, no API keys, no subprocess -- makes it possible to wire up an ensemble and exercise GenAgentEnsemble.ask/2 or tell/2 end-to-end from a fresh iex -S mix session with zero setup.

Not for production use. For real work, reach for GenAgent.Backends.Anthropic, GenAgent.Backends.Claude, GenAgent.Backends.OpenAI, or GenAgent.Backends.Codex.

Options

:transform -- a function (String.t() -> String.t()) that maps the prompt text to the response text. Defaults to prepending "echo: ".
:delay_ms -- milliseconds to sleep before emitting the response. Useful for simulating a slow backend during iex prototyping. Default: 0.

Example

{:ok, _} =
  GenAgentEnsemble.start_link(
    name: "echo",
    strategy: GenAgentEnsemble.Strategies.Solo,
    opts: [
      agent: {"w", GenAgentEnsemble.Agents.Simple,
              backend: GenAgentEnsemble.Backends.Echo,
              transform: &String.upcase/1,
              delay_ms: 500}
    ]
  )
{:ok, %{text: "HELLO"}} = GenAgentEnsemble.ask("echo", "hello")

Summary

Types

t()

Types

t()

@type t() :: %GenAgentEnsemble.Backends.Echo{
  delay_ms: non_neg_integer(),
  transform: (String.t() -> String.t())
}