# `Jido.Thread.Entry`
[🔗](https://github.com/agentjido/jido/blob/v2.3.0/lib/jido/thread/entry.ex#L1)

A single entry in a Thread. Typed by `kind` with kind-specific payload.

Entries are immutable once appended. The `refs` map provides cross-links
to other Jido primitives (signals, instructions, actions).

## Entry Kinds

Kinds are open - any atom is accepted. Recommended kinds include:
- `:message` - User/assistant/system message
- `:tool_call` - Tool execution request
- `:tool_result` - Tool execution result
- `:signal_in` / `:signal_out` - Signal events
- `:instruction_start` / `:instruction_end` - Instruction execution
- `:note` - Human annotation
- `:error` - Error occurred
- `:checkpoint` - State snapshot marker

## Refs Conventions

Common ref keys (not enforced):
- `signal_id` - Associated signal ID
- `instruction_id` - Associated instruction ID
- `action` - Action module name
- `agent_id` - Agent ID
- `parent_thread_id` / `child_thread_id` - Thread relationships

# `t`

```elixir
@type t() :: %Jido.Thread.Entry{
  at: integer(),
  id: binary(),
  kind: atom(),
  payload: map(),
  refs: map(),
  seq: integer()
}
```

# `new`

```elixir
@spec new(map() | keyword()) :: t()
```

Create a new entry from attributes