Agent RuntimePortable execution semantics for AI agents.

Submit work, stream facts, control tools, resume state, and export evidence without binding the runtime to one UI or provider.

Runtime facts first

Sessions, threads, turns, tasks, tools, actions, queues, artifacts, and evidence are represented as typed facts.

OpenAI, Anthropic, local models, graph runtimes, and custom streams can be adapted into the same runtime event model.

Submit, interrupt, resume, queue, action response, subagents, snapshots, and evidence export are part of the standard.