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About

DeepSeek Harness is an open source agent harness designed to keep AI agents working in real-world environments by helping them understand context, use tools, and continue operating across complex tasks. Built on the Cordis plugin system, every capability is a plugin that can be selected, swapped, extended, or recomposed through configuration without changing the core source code. Plugins provide models, tools, skills, sessions, sandboxes, storage, loops, scheduling, and the UI, while Cordis manages plugin mounting, dependencies, services, and events. Every run is traceable through an append-only session log that records system prompts, reasoning, tool calls and results, subagent scheduling, and context injections. The Trajectory view lets developers inspect these records by source, while resume, fork, search, and replay operate on the same event stream.

About

Flue is an open agent framework for building durable AI agents with a programmable TypeScript harness. Created by the team behind Astro, it uses a React-like hooks API to compose agent behavior, persistent state, lifecycle events, models, tools, sandboxes, subagents, skills, and MCP servers in code. Agents are stateful and addressable over HTTP, keep context across conversations and events, and can change capabilities as work progresses. Flue records every session in a durable stream, so accepted work survives crashes, restarts, and deploys; interrupted sessions resume automatically and clients reconnect without starting over. Developers can run agents locally, in CI, from their own backend, or orchestrate them with systems such as Cloudflare Workflows and Inngest. Secure sandboxes let agents run commands, edit files, and do real work, while tools connect them to APIs and data. Flue is powered by Pi and supports different LLM providers, allowing teams to choose the models they want.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

AI developers and agent-harness builders seeking to create, customize, trace, benchmark, and operate composable AI agents with interchangeable models, tools, skills, runtimes, and infrastructure

Audience

Developers and AI engineering teams requiring a tool to build durable, stateful agents that can use tools, maintain context, and run across different models and deployment environments

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

DeepSeek
Founded: 2023
China
deepseek.com/harness/en/

Company Information

Flue
Founded: 2026
United States
flueframework.com

Alternatives

Claude Code

Claude Code

Anthropic

Alternatives

No Alternatives
OpenClaw

OpenClaw

Molty
StateFabric

StateFabric

J Gregory Technology Ltd.

Categories

Categories

Integrations

Apache Sentry
Braintrust
DeepSeek
DeepSeek -V4.1-Flash
Discord
Docker
E2B
GLM-5.3-Flash
GitLab
Google Chat
Linear
Model Context Protocol (MCP)
MongoDB
MySQL
PostgreSQL
Redis
Render
Salesforce
Shopify
Twilio

Integrations

Apache Sentry
Braintrust
DeepSeek
DeepSeek -V4.1-Flash
Discord
Docker
E2B
GLM-5.3-Flash
GitLab
Google Chat
Linear
Model Context Protocol (MCP)
MongoDB
MySQL
PostgreSQL
Redis
Render
Salesforce
Shopify
Twilio
Claim DeepSeek Harness and update features and information
Claim DeepSeek Harness and update features and information
Claim Flue and update features and information
Claim Flue and update features and information