Prepare the runtime
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Quickstart
What it ships
AgentSdk::createAgent(...)
AgentSdk::defineTool(...)
AgentSdk::createGatewayAgentClient(...)
- a bounded tool loop over the Phaseo
responses API
Advanced runtime
PHP supports validation and approval callables, HITL and manual tools, progress, recoverable errors, replayable iterators, stop helpers, dynamic turns, persisted next-turn parameters, normalized usage/cost, and StateAccessor.
Streaming and cancellation
Agent::stream(...) and Agent::continueStream(...) drive the gateway’s Responses SSE stream through a Fiber as the returned iterator is consumed. Use textStream(), reasoningStream(), itemStream(), or fullStream(); call cancel() to stop the Fiber and close the generator. Completed steps retain request IDs, provider metadata, finish reasons, warnings, usage, and cost.
Last modified on July 26, 2026