---
title: "POST /call/TestOpenAIResponsesCustomURL"
method: POST
path: "/call/TestOpenAIResponsesCustomURL"
---

# POST /call/TestOpenAIResponsesCustomURL

`POST /call/TestOpenAIResponsesCustomURL`

## Request body

- object
  - `input` string, required
  - `__baml_options__` BamlOptions
    - `client_registry` object, required
      - `clients` ClientProperty[], required
        - `name` string, required
        - `provider` string, required
        - `options` object, required
      - `primary` string

## Response `200`

Successful operation

- string

## Changes

> 52 revisions in range; 1 could not be searched.

- **2025-09-08** `99302493e325` — 1 breaking, 3 warning, 1 info
  - added the new required request property `__baml_options__/client_registry/clients`
  - removed the request property `__baml_options__/client_registry/name`
  - removed the request property `__baml_options__/client_registry/options`
  - removed the request property `__baml_options__/client_registry/provider`
  - …1 more
- **2025-07-18** `a03327cea083` — 4 breaking
  - added the new required request property `__baml_options__/client_registry/name`
  - added the new required request property `__baml_options__/client_registry/options`
  - added the new required request property `__baml_options__/client_registry/provider`
  - the `__baml_options__/client_registry` request property type/format changed from ``/`` to `object`/``
- **2025-07-08** `45727502b585` — 1 info
  - endpoint added
- **2025-03-11** `e28c8736c70e` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/boundaryml/apis/baml-cli-serve/changes/call/TestOpenAIResponsesCustomURL/post.md)

---

[API](https://skmtc.dev/boundaryml/apis/baml-cli-serve.md) · [All operations](https://skmtc.dev/boundaryml/apis/baml-cli-serve/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/boundaryml/baml-cli-serve/revisions/3f3e2166cbf3/schema)