> ## 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**](../modules/protocols) module.

<Badge color="blue">AI Agent</Badge>

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

<ResponseField name="agent_id" type="str">
  No description available.
</ResponseField>

<ResponseField name="min_version" type="int">
  No description available.
</ResponseField>

<ResponseField name="max_version" type="int">
  No description available.
</ResponseField>

<ResponseField name="session_id" type="Optional[str]">
  No description available.
</ResponseField>

<ResponseField name="type" type="str">
  No description available.
</ResponseField>

## Methods

<CardGroup cols={2}>
  <Card title="from_frame()" icon="function" href="../functions/JoinParams-from_frame">
    Validate a raw `join` frame into typed params.
  </Card>
</CardGroup>

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-agents/praisonaiagents/gateway/protocols.py#L540">
  `praisonaiagents/gateway/protocols.py` at line 540
</Card>