RunsClient

Base URL of the LangGraph API server.

Defaults to http://localhost:8123, unless the runtime provides a langgraph_api:url global override.

Headers applied to every request.

The configured API key, when present, is added as the x-api-key header after these defaults are initialized.

Hook for inspecting or mutating a request before it is sent.

Receives the resolved URL and prepared RequestInit; return the original init or a replacement object to continue the request.

Streaming protocol used by stream-capable endpoints.

Defaults to "legacy" for backwards compatibility.

Default timeout, in milliseconds, applied to client requests.

Per-request timeoutMs values override this default. Passing null at the request level disables the configured timeout for that request.

Cancel a run.

Cancel one or more runs.

Create a new assistant.

Create a batch of stateless background runs.

Delete an assistant.

Get an assistant by ID.

Block until a run is done.

Stream output from a run in real-time, until the run is done.

List all runs for a thread.

Create a run and stream the results.

Create a run and wait for it to complete.