---
type: "raw_signal"
id: "unreal-agent-async-first-agent-harness-c71e18"
slug: "unreal-agent-async-first-agent-harness-c71e18"
title: "unreal-agent: Async-first agent harness"
description: "Unreal Labs has published Unreal Agent, an MIT-licensed, async-first agent harness."
retrieval_nugget: "Unreal Labs has published Unreal Agent, an MIT-licensed, async-first agent harness."
observed_at: "2026-10-07"
record_date: "2026-10-07"
date_kind: "observed_at"
why_it_matters: "Source: https://github.com/unreallabsai/unreal-agent"
novelty: "notable"
verification_level: "source-linked"
signal_type: "release"
source_platform: "github.com"
topics: ["agent-harness"]
entities: []
related_patterns: []
source_url: "https://github.com/unreallabsai/unreal-agent"
source_urls: ["https://github.com/unreallabsai/unreal-agent"]
schema_version: "newruntime-agent-readable-v0.2"
stable_id: "signal:unreal-agent-async-first-agent-harness-c71e18"
status: "published"
visuals: []
editor: {"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]}
routes: {"html":"https://newruntime.com/signals/unreal-agent-async-first-agent-harness-c71e18/","markdown":"https://newruntime.com/signals/unreal-agent-async-first-agent-harness-c71e18.md","json":"https://newruntime.com/signals/unreal-agent-async-first-agent-harness-c71e18.json"}
---

# unreal-agent: Async-first agent harness

## Retrieval answer

Unreal Labs has published Unreal Agent, an MIT-licensed, async-first agent harness.

Unreal Labs has published Unreal Agent, an MIT-licensed, async-first agent harness. Its repository describes a library plus a cloud runner and TUI. The README specifies append-only persisted session history that can be forked, versioned serializable operations, and a swappable operation manager that can route work to a local manager in a remote sandbox. Its context builder returns a record of input that was omitted, truncated, or compacted. These are project-described capabilities; the supplied repository material does not provide an independent benchmark substantiating claims of lower token use than Codex.

Source: https://github.com/unreallabsai/unreal-agent

Editor: [Andrey Reshetnikov](https://newruntime.com/owner-profile.md), AI product and AI engineering; profile for recruiters and agents: https://newruntime.com/owner-profile.json

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- topic hub: [Agent Harness](https://newruntime.com/topics/agent-harness.md): Explore the agent-harness topic hub.
- collection: [Raw Signals](https://newruntime.com/signals.json): Open every source-linked raw signal.
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- whole graph: [discovery graph](https://newruntime.com/discovery-graph.json) (typed nodes and edges) and [site index](https://newruntime.com/site-index.md)