> ## Documentation Index
> Fetch the complete documentation index at: https://praison.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Join Params • AI Agent SDK

> JoinParams: Validated legacy ``join`` frame — the pre-``hello`` handshake.

# JoinParams

> Defined in the [**protocols**](https://praison.ai/docs/sdk/reference/praisonaiagents/modules/protocols.md) module.

AI Agent

Validated legacy `join` frame — the pre-`hello` handshake.

Retained so the legacy path shares the same single validating decode step
instead of its own separate hand-written guards.

Attributes:
agent\_id: The agent to connect to.
min\_version: Minimum protocol version the client supports.
max\_version: Maximum protocol version the client supports.
session\_id: Optional session to resume.

## Properties

**agent\_id** `str`

No description available.

**min\_version** `int`

No description available.

**max\_version** `int`

No description available.

**session\_id** `Optional[str]`

No description available.

**type** `str`

No description available.

## Methods

> [card] [from\_frame()](https://praison.ai/docs/sdk/reference/praisonaiagents/functions/JoinParams-from_frame.md)
>
> Validate a raw `join` frame into typed params.

## Source

> [card] [View on GitHub](https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/gateway/protocols.py#L879)
>
> `praisonaiagents/gateway/protocols.py` at line 879


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