Drop-in for POST https://api.openai.com/v1/responses. Point your OpenAI SDK’s
baseURL at https://api.verlon.ai/v1 and pass your Verlon gate id as model.
The request and response bodies match OpenAI’s Responses API verbatim — the
Agents SDK and multi-turn tool loops with encrypted reasoning replay work
unmodified.
Request
POST /v1/responses
store: true and previous_response_id are not supported (Verlon is
stateless — zero data retention by default). Echo prior reasoning and
function_call items back in input each turn instead. Both return 400.
Reasoning replay
For reasoning models, Verlon automatically requests
include: ['reasoning.encrypted_content'] and passes the encrypted reasoning
through untouched. To continue a tool loop, send the prior turn’s reasoning
and function_call output items back at the front of input, followed by your
function_call_output:
Restrictions
- OpenAI-backed gates only. A gate resolving to Anthropic, Google, or
Mistral returns
400 — use /v1/chat/completions
for cross-provider routing.
- Errors use OpenAI’s nested shape (
{ error: { message, type, code, param? } }).
See OpenAI compatibility → Responses API
for SDK examples. 
