feat: add support for OpenAI Realtime and Responses API

[chrisehlee]

added support for openai's responses api and realtime api with webrtc.

responses api works the same as other endpoints - just pass model and input and it routes to the provider.

for realtime added the webrtc call endpoints. most importantly the create calls endpoint accepts both multipart form data (with session + sdp fields) or direct sdp data with model in query param. also added client secrets for ephemeral tokens and accept/reject/hangup calls.

updated proxy middleware to handle formdata properly and added the openai-beta header for realtime endpoints.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Updated (UTC)
ws-gpt-port	Ready	Preview	Oct 13, 2025 8:43am

[tomasmcm]

Also, from the build logs:

- info Linting and checking validity of types...
Failed to compile.
./src/server/routes/proxy.route.ts:101:48
Type error: The left-hand side of an 'instanceof' expression must be of type 'any', an object type or a type parameter.
   99 |     model = session.model
  100 | 
> 101 |     const sdpText = sdpData instanceof File || sdpData instanceof Blob
      |                                                ^
  102 |       ? await sdpData.text()
  103 |       : sdpData.toString()
  104 |     formData.set('sdp', sdpText)
 ELIFECYCLE  Command failed with exit code 1.
Error: Command "pnpm run build" exited with 1

[tomasmcm]

are you sure about removing await here?

[chrisehlee]

It is my understanding that zValidator is already cached and not a promise so no need for awaiting I might be wrong but the TS types also corroborate Sent from Outlook for Android<https://aka.ms/AAb9ysg>

________________________________ From: Tomás Correia Marques ***@***.***> Sent: Monday, October 13, 2025 1:46:50 PM To: whitesmith/gpt-port ***@***.***> Cc: chrisehlee ***@***.***>; Assign ***@***.***> Subject: Re: [whitesmith/gpt-port] feat: add support for OpenAI Realtime and Responses API (PR #1) @tomasmcm commented on this pull request.

________________________________ In src/server/routes/proxy.route.ts<#1 (comment)>:

@@ -8,8 +8,8 @@ import { validateAPIToken } from '../middleware/validate-token.middleware'

import { MiddlewareHandler, Context } from 'hono' import { Env } from '../types'

…

-export const processRequest = async (c:Context) => { - const result = await c.req.valid('json') +export const processRequest = async (c: Context) => { + const result = (c.req as any).valid('json') are you sure about removing await here? — Reply to this email directly, view it on GitHub<#1 (review)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ADBIMFTCS43ZURSORBIFFG33XONLVAVCNFSM6AAAAACIPT6D42VHI2DSMVQWIX3LMV43YUDVNRWFEZLROVSXG5CSMV3GSZLXHMZTGMZRGQ4TEMRWGM>. You are receiving this because you were assigned.Message ID: ***@***.***>