API rate limits
Requests to the REST API, including those the CLI and SDK make, are limited to 1,000 per minute per member, shared by all of their API keys, with bursts of up to 500. A refused request returns429 with a Retry-After header; wait that long and retry. The web app and the
Default key that hosted runs carry are not limited.
When the service is busy, a request can also return 503 with Retry-After. Retry it the same way.
Model calls
Model calls through HUD’s gateway are limited per team:
Only a hosted run’s calls to the model it is evaluating are exempt. Everything else counts: scripts,
agents that run on your own machine, even against a hosted environment, and calls a hosted run makes
to other models, such as an LLM grader’s. Calls with
your own provider key count too. A refused
call returns
429.
Runs
Plans don’t set a fixed number of runs a team can have at once.
Traces
A trace stores the steps a run records and the screenshots, files, and video attached to them:
Data past a limit is refused with
413 and is missing from the trace. A computer-use agent that
takes one screenshot per step reaches the image limit after 500 steps.