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Create call

An MCP tool from the OpenAI API server, hosted on mcp.hjlabs.in.

Create call Create a new Realtime API call over WebRTC and receive the SDP answer needed to complete the peer connection. [POST /realtime/calls]

Name on the gateway: openai_api__create_realtime_call · may change things.

Parameters

Name	Type	Description
`sdp` required	`string`	WebRTC Session Description Protocol (SDP) offer generated by the caller.
`session`	`object`	Optional session configuration to apply before the realtime session is…

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "openai_api__create_realtime_call",
  "arguments": {
    "sdp": "…"
  }
}

Or connect the OpenAI API server directly, which lists 371 tools including this one:

Run in your terminal

claude mcp add --transport http hj-openai-api https://mcp.hjlabs.in/mcp/openai-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the create call tool with sdp set to ….