Kubernetes sandboxes meet harness-agnostic isolation loops

Hmbown

Open-source Rust terminal coding agent harness with TUI, multi-provider support, and community-driven loop design.

Use caseUse it to drive a fast local coding loop from the terminal when you want a systems-language harness instead of a Node TUI.

yc-software

Multiplayer organizational agent harness with per-person and per-room scopes, durable sandboxes, memory, permissions, and swappable coding runtimes.

Use caseUse it to give a team scoped agent rooms with Postgres-backed sessions and policy-controlled sandboxes.

sn0bored

Vendor-neutral regression harness for agents and LLM-as-judge workflows with JSONL cases, deterministic graders, and CI fail-on-regress.

Use caseUse it to version conversation cases and fail CI when an agent policy or tool-selection drifts.

Hmbown

Recursive Language Model style agent harness built on Deep Agents with persistent REPL control and practical tooling.

Use caseUse it to treat prompts and subagents as programmatic variables inside a recursive coding loop.

framerslab

TypeScript agent framework with cognitive memory, runtime tool forging, multi-agent orchestration, and strong LongMemEval numbers.

Use caseUse it to build agents that remember across sessions and forge their own tools under multi-provider dispatch.

LangChain + NVIDIA

Coding agent that runs inside NVIDIA OpenShell policy sandbox, orchestrated by Deep Agents and Nemotron.

Use caseUse it to execute agent-written code under external filesystem and network policies without cloud sandboxes.

sf-tools

Live comparison of agent sandbox and microVM pricing across providers with free-tier visibility.

Use caseUse it to pick the cheapest Firecracker or gVisor sandbox shape before locking an agent fleet budget.

GitHub

Three releases landed in a week. Isolated agent execution now runs exclusively on Cloud Hypervisor after docker-sbx and gVisor runtimes were removed, plus stricter hosted-web domain policies.

Shipped

Piotr Płoński

Clear 2026 primer that defines Agent equals Model plus Harness and separates runtime harnesses from eval harnesses. It maps coding and general-purpose open-source options power users can clone today.

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TrueFoundry

Builder-focused comparison of production harnesses including the newly open-sourced TrueForge runtime. It argues managed-agent ergonomics no longer require handing model choice to a vendor.

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