---
title: "Vendor OAuth callback relay (public, unauthenticated)."
method: GET
path: "/mcpservers/oauth/callback"
tags: ["AI"]
---

# Vendor OAuth callback relay (public, unauthenticated).

`GET /mcpservers/oauth/callback`

The redirect_uri registered with the GitHub/Linear OAuth apps. Not called directly by API clients -- the vendor's authorization server redirects the user's browser here after consent. Relays the browser onward with the vendor's `code`/`state` query parameters preserved so the client application can complete the flow via POST /mcpservers/oauth/complete. Deliberately unauthenticated: the browser arriving here has not sent any VoIPbin credentials.

## Query parameters

- `code` string
- `state` string, required

## Other responses

- `302` — Redirects the browser to the client application's configured landing page.
- `400` — Invalid request (INVALID_ARGUMENT).
- `500` — Internal error (INTERNAL).

## Changes

- **2026-09-12** `a5e92b1a8467` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/voipbin/apis/voipbin-api/changes/mcpservers/oauth/callback/get.md)

---

[API](https://skmtc.dev/voipbin/apis/voipbin-api.md) · [All operations](https://skmtc.dev/voipbin/apis/voipbin-api/llms.txt) · [OpenAPI document](https://skmtc.dev/voipbin/apis/voipbin-api/revisions/6a2b13260ccc?raw)