reasoning-content

OpenAI Agents: Reasoning Content

Extracts a reasoning model's reasoning summary alongside its final answer. Unlike the other samples, this one does not use TemporalOpenAIRunner. An Activity calls the openai SDK directly using the Responses API with reasoning: { summary: 'auto' }, reads the reasoning summary from the reasoning item in the response output, and returns it together with the final answer; the Workflow runs that Activity and returns both.

Note that OpenAI returns a reasoning summary, not the model's raw chain-of-thought. The returned field is named reasoningContent to match the sample name.

Mirrors the Python openai_agents/reasoning_content sample.

Prerequisites

Reasoning summaries are only returned to verified OpenAI organizations. If your organization is not verified, the Responses API returns an HTTP 400 with Your organization must be verified to generate reasoning summaries. Verify your organization at https://platform.openai.com/settings/organization/general before running this sample.

Run

Start a Temporal dev server:

temporal server start-dev

The default model is gpt-5.5. Set your OpenAI credentials (override the model with OPENAI_MODEL if you want a different reasoning-capable model):

export OPENAI_API_KEY=sk-...

Then start the Worker and run the Workflow (run from the openai-agents/ root, after npm install there):

npx ts-node src/reasoning-content/worker.ts

npx ts-node src/reasoning-content/client.ts "What is the square root of 841? Please explain your reasoning."

Test

The test runs fully offline by overriding the Activity's openai client factory with a stub via setReasoningClientFactory. It asserts the Workflow returns the reasoning summary and content the stub provides, and that the prompt and model were forwarded to the client.

npx mocha --exit --require ts-node/register --require source-map-support/register "src/reasoning-content/mocha/*.test.ts"