The way to solve "The parameter tool.type" error when use custom model in codex sdk

[ziJinChampion]

Yesterday I tried to use Doubao-seed-pro in code sdk, but after I set up baseUrl and apiKey I got {"type":"error","message":"{"error":{"code":"InvalidParameter","message":"The parameter tool.type specified in the request are not valid: The parameter type specified in the request are not valid: unknown tool type: custom.. Request id: "xxx"","param":"tool.type","type":"BadRequest"}}"}.

At first I thought Doubao is not compatible with Codex, but when I use Doubao with codex cli, it works.
So I want to know why cli works fine but sdk can not work properly.

After extract request logs and find the difference i found each requests has header: 'originator' .
When you post a request via codex cli it is 'codex_exec', via codex sdk it is 'codex_sdk_ts'. That is the only difference.

So you just need to set the env as : CODEX_INTERNAL_ORIGINATOR_OVERRIDE: "codex_exec".

This is the whole configuration:
const codex = new Codex({ config: { model_provider: "volcengine-ark", model_providers: { "volcengine-ark": { name: "Volcengine Ark", base_url: "https://ark.cn-beijing.volces.com/api/v3", env_key: "ARK_API_KEY", wire_api: "responses", }, } }, env: { ...process.env, ARK_API_KEY: process.env.ARK_API_KEY!, CODEX_INTERNAL_ORIGINATOR_OVERRIDE: "codex_exec", }, });