# `Wardrik.Server`

A behaviour for what runs Wardrik's operations.

`Wardrik.Agent`, `Wardrik.Tokens` and the other typed modules call the server their
`Wardrik.Scope` names. Packages built on the protocol call those modules without depending on
the server. The `wardrik` hub implements it.

# `answer`

```elixir
@callback answer(call :: term(), message :: map()) :: :ok
```

Answers the worker's `call` with the JSON-RPC `message`.

# `authenticate`

```elixir
@callback authenticate(wardrik :: atom(), secret :: String.t()) ::
  {:ok, Wardrik.Scope.t()} | {:error, Wardrik.Error.t()}
```

Returns the scope an API token's `secret` acts in on `wardrik`, or an error.

# `follow`

```elixir
@callback follow(Wardrik.Scope.t(), String.t() | struct(), term(), keyword()) ::
  Enumerable.t()
```

Sends `input` to `agent` and streams its answer, in order:

  1. `{:text, chunk}`, any number of times.
  2. One of `{:done, %Wardrik.Reply{}}`, `{:waiting, interrupts}` or `{:failed, why}`.

Raises `Wardrik.Error` if the agent can't be reached.

# `offer`

```elixir
@callback offer(Wardrik.Scope.t(), tools :: [map()]) :: :ok | {:error, term()}
```

Offers a worker's tools, as MCP's `tools/list` returns them, to the agents `scope` may serve.

The calling process then receives:

  * `{Wardrik.Workers, :call, call, name, arguments, meta}` for each call to a tool.
  * `{Wardrik.Workers, :cancel, call}` when a call is cancelled.

# `run`

```elixir
@callback run(Wardrik.Scope.t(), String.t(), map()) ::
  {:ok, term()} | {:error, Wardrik.Error.t()}
```

Runs operation `id` with `input`, shaped as its input schema describes.

# `stream`

```elixir
@callback stream(Wardrik.Scope.t(), String.t(), map()) ::
  {:ok, Enumerable.t()} | {:error, Wardrik.Error.t()}
```

Runs the streamed operation `id`. Streams `{event, cursor}` pairs: stored events, then new ones as they arrive.

---

*Consult [api-reference.md](api-reference.md) for complete listing*