DeepSeek Harness: Building and Extending AI Coding Agents Training Course
DeepSeek Harness (dsh) serves as an open-source framework developed by DeepSeek AI, specifically designed for constructing and executing AI coding agents. Leveraging the Cordis plugin framework, it adopts an "everything is a plugin" architectural approach, where components such as the model adapter, tool registry, session log, and agent loop are modular and can be configured at startup.
This live, instructor-led training session (available online or onsite) is tailored for software developers and AI engineers who aim to utilize DeepSeek Harness to create, manage, and expand AI coding agents within their projects.
Upon completion of this training, participants will be equipped to:
- Install and execute DeepSeek Harness while configuring models.
- Manage coding tasks via the Web UI and command line interfaces.
- Describe the Cordis plugin architecture and its various extension points.
- Create and release custom plugins compatible with the harness.
- Automate harness operations through the SDK and headless mode.
Course Format
- Interactive lectures and discussions.
- Extensive exercises and practice opportunities.
- Practical implementation in a live-lab setting.
Customization Options
- To request a tailored training experience, please reach out to us for arrangements.
Course Outline
Introduction to DeepSeek Harness
- Definition of DeepSeek Harness and its ecosystem position
- The "everything is a plugin" design principle
- Overview of Web UI, CLI, and headless modes
Installation and Initial Setup
- Node.js prerequisites and package setup
- Starting the Web UI using npx
- Compilation and execution from source code
Model Setup
- Configuring the DeepSeek API key
- Model selection and switching procedures
- Integration with OpenAI-compatible endpoints
Workspaces and Sessions
- Workspace selection and management
- Session composer usage and conversation dynamics
- File reading, editing, and generation capabilities
Executing Coding Tasks
- Repository summarization and code navigation
- Command execution and task delegation
- Maintaining a structured task plan
Permissions and Sandboxing
- Approval workflows and permission strategies
- Restricting file and command access
- Local and remote sandbox backend options
Native Tools and Integrations
- Filesystem, terminal, and shell utilities
- Support for Model Context Protocol
- Integration with Language Server Protocol
Subagents and Task Delegation
- Creating and branching subagents
- Utilizing providers for other coding agents
- Distributing work across sessions
The Cordis Plugin Model
- Plugins as services, events, and effects
- Shared context and lifecycle management
- Reasons for the absence of a privileged core
Profiles, Bundles, and Settings
- Profile and bundle layering mechanisms
- Configuration adjustments via cordis.patch.yml
- Reviewing the initialized component tree
Core Subsystems
- The append-only session logging system
- Assembly of system prompts and tool schemas
- Agent loop mechanics and turn progression
Events and Extension Hooks
- Session, agent, and capability events
- Waterfall and interceptor event handling
- Aligning behaviors with extension points
Plugin Development
- Service registration via context keys
- Incorporating tools and model adapters
- Plugin publication and discovery processes
SDK, Headless Mode, and Automation
- Controlling the harness from external processes
- TypeScript and Python SDK integration
- CLI and headless automation techniques
Requirements
- A solid grasp of software development fundamentals
- Proficiency with command-line tools and Git
- Familiarity with basic JavaScript or TypeScript
Target Audience
- Software developers
- AI and machine learning engineers
- DevOps and platform engineers
Open Training Courses require 5+ participants.
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