Toolbox/Agent SDKs & frameworks/withastro/flue

withastro/flue

The sandbox agent framework.

View on GitHub →

TypeScriptApache-2.0

Stars

8.1k

Δ 7d

+79

Δ 30d

+422

Age

6 mo

Last push

7d ago

90-day star history

Where this sits in the catalog

GroupFrameworks & SDKs

CategoryAgent SDKs & frameworks#26 of 85 by stars

RankingsNot in any top 20 today — see the rankings

NearbyMulti-agent orchestration (129)Workflow & graph engines (13)Low-code builders (21)Runtimes & sandboxes (16)

Most-wanted open issues

Ranked by 👍 reactions. 36 open issues total, checked 2026-08-29.

Issue	👍	Comments	Opened
Packaged skill supporting files are invisible to sandboxes — bundled scripts can't be executed or materialized	2	0	3 wk
Feature: per-tool execution timeout on ToolDefinition	1	0	1 wk
Docs: document Docker requirement for local Cloudflare Sandbox development	1	0	3 wk
Cloudflare Anthropic provider ignores forceAdaptiveThinking, sends incompatible thinking config	1	1	2 wk
Cloudflare tracing omits join IDs from existing child spans	1	0	2 wk

What Hacker News made of it

Threads that link to or name this project, ranked by points. The comments are where the objections live — the README never argues back.

Withastro/flue: The sandbox agent framework
2 points · 0 comments · 4 mo

Alternatives in Agent SDKs & frameworks

deepseek-ai/deepseek-harness

DeepSeek Harness: Everything is a Plugin.

⭐211.8k

+10,4097d

TypeScript

3 wk

langchain-ai/langchain

The agent engineering platform.

⭐145.6k

+4467d

Python

3 yrs

zhayujie/CowAgent

Open-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory a…

⭐46.8k

+727d

Python

4 yrs

Build, run, and manage agent platforms.

⭐42.0k

+947d

Python

4 yrs

CopilotKit/CopilotKit

The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI P…

⭐37.2k

+1077d

TypeScript

3 yrs

agentscope-ai/agentscope

Build and run agents you can see, understand and trust.

⭐30.6k

+7397d

Python

2 yrs