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Course Outline

Introduction to DeepSeek Harness

  • Overview of DeepSeek Harness and its role in the ecosystem
  • The "everything is a plugin" design principle
  • Web UI, CLI, and headless operational modes

Setup and Initial Execution

  • Node.js prerequisites and package installation
  • Starting the Web UI using npx
  • Compiling and running from source code

Model Setup

  • Configuring the DeepSeek API key
  • Selecting and swapping between models
  • Integrating OpenAI-compatible endpoints

Workspaces and Session Management

  • Selecting and changing active workspaces
  • Utilizing the session composer and managing conversation flow
  • Reading, modifying, and generating files

Executing Coding Tasks

  • Summarizing repositories and navigating codebases
  • Executing commands and delegating specific tasks
  • Maintaining and updating task plans

Permissions and Sandbox Environments

  • Managing approval and permission policies
  • Restricting file and command access
  • Implementing local and remote sandbox backends

Native Tools and Integrations

  • Filesystem, terminal, and shell utilities
  • Support for the Model Context Protocol
  • Integration with the Language Server Protocol

Subagents and Task Delegation

  • Creating and forking subagents
  • Product providers for alternative coding agents
  • Distributing work across a single session

The Cordis Plugin Model

  • Defining plugins as services, events, and effects
  • Understanding shared context and lifecycle management
  • Rationale for the absence of a privileged core

Profiles, Bundles, and Configuration

  • Managing profiles and bundle layering
  • Modifying configuration via cordis.patch.yml
  • Reviewing the booted configuration tree

Core System Components

  • The append-only session logging mechanism
  • Assembly of system prompts and tool schemas
  • Managing the agent loop and turn processing

Events and Extension Points

  • Handling session, agent, and capability events
  • Working with waterfall and interceptor events
  • Aligning behaviour with specific extension points

Plugin Development

  • Registering services using context keys
  • Implementing new tools and model adapters
  • Releasing and locating plugins

SDK, Headless Operation, and Automation

  • Controlling the harness from external processes
  • Utilising the TypeScript and Python SDKs
  • Automating workflows via CLI and headless mode

Requirements

  • A solid grasp of fundamental software development concepts
  • Proficiency with the command line and Git
  • Basic knowledge of JavaScript or TypeScript

Target Audience

  • Software developers
  • AI and machine learning engineers
  • DevOps and platform engineers
 14 Hours

Number of participants


Price per participant

Provisional Upcoming Courses (Require 5+ participants)

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