Apeira

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Apeirastream-first Agent Runtime.

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Core API

Stream-first

Submit a turn and consume its lifecycle and model events as a ReadableStream.

Small runtime

Apeira keeps the core focused on Episodic session state, turn queueing, aborts, and event delivery.

Episodic state

Session history is an append-only JSONL log; each model call receives assembled context from that log.

xsAI-based

Model calls, tools, steps, and streaming events are powered by @xsai-ext/responses.