V3 Core Implementation

V3 Core Implementation is a skill for Claude Code from shyftlabs/continuum. It costs 37 tokens per session (5,158 once invoked), scanned A, a copy of V3 Core Implementation, Apache-2.0.

A guide to implementing the core TypeScript modules of claude-flow v3 using Domain-Driven Design, clean architecture, dependency injection, and modular testing.

In plain words
What is it for?
Use it to build task, session, and health domains, set up the core structure, define services and repositories, and add tests.
Why use it?
It provides a way to split core responsibilities into focused modules instead of putting them in one large codebase area.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is import { AggregateRoot } from '../../../shared/domain/aggregate-root';.

Good fit Use it to build task, session, and health domains, set up the core structure, define services and repositories, and add tests.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/shyftlabs/continuum
agentmods
npx agentmods add skills/shyftlabs/continuum/v3-core-implementation

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,158 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00037 $0.05158
Opus 5 $0.00018 $0.02579
Sonnet 5 $0.00007 $0.01032
Haiku 4.5 $0.00004 $0.00516

Measured 5d ago against content hash 9eb11363e804, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

V3 Core Implementation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to V3 Core Implementation — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/v3-core-implementation/SKILL.md · 797 lines

How it starts

The opening of the file, as written. The whole thing — 797 lines — stays where its author put it; the contents beside it link to each section on GitHub.

V3 Core Implementation

What This Skill Does

Implements the core TypeScript modules for claude-flow v3 following Domain-Driven Design principles, clean architecture patterns, and modern TypeScript best practices with comprehensive test coverage.

Quick Start

# Initialize core implementation
Task("Core foundation", "Set up DDD domain structure and base classes", "core-implementer")

# Domain implementation (parallel)
Task("Task domain", "Implement task management domain with entities and services", "core-implementer")
Task("Session domain", "Implement session management domain", "core-implementer")
Task("Health domain", "Implement health monitoring domain", "core-implementer")

Core Implementation Architecture

Domain Structure

src/
├── core/
│   ├── kernel/                     # Microkernel pattern
│   │   ├── claude-flow-kernel.ts
│   │   ├── domain-registry.ts
│   │   └── plugin-loader.ts
│   │
│   ├── domains/                    # DDD Bounded Contexts
│   │   ├── task-management/
│   │   │   ├── entities/
│   │   │   ├── value-objects/
│   │   │   ├── services/
│   │   │   ├── repositories/
│   │   │   └── events/
│   │   │
│   │   ├── session-management/
│   │   ├── health-monitoring/
│   │   ├── lifecycle-management/
│   │   └── event-coordination/
│   │
│   ├── shared/                     # Shared kernel
│   │   ├── domain/
│   │   │   ├── entity.ts
│   │   │   ├── value-object.ts
│   │   │   ├── domain-event.ts
│   │   │   └── aggregate-root.ts
│   │   │
│   │   ├── infrastructure/
│   │   │   ├── event-bus.ts
│   │   │   ├── dependency-container.ts
│   │   │   └── logger.ts
│   │   │
│   │   └── types/
│   │       ├── common.ts
│   │       ├── errors.ts
│   │       └── interfaces.ts
│   │
│   └── application/                # Application services
│       ├── use-cases/
│       ├── commands/
│       ├── queries/
│       └── handlers/

Base Domain Classes

Entity Base Class

// src/core/shared/domain/entity.ts
export abstract class Entity<T> {
  protected readonly _id: T;
  private _domainEvents: DomainEvent[] = [];

  constructor(id: T) {
    this._id = id;
  }

  get id(): T {
    return this._id;
  }

  public equals(object?: Entity<T>): boolean {
    if (object == null || object == undefined) {
      return false;
    }

    if (this === object) {
      return true;
    }

    if (!(object instanceof Entity)) {
      return false;
    }

    return this._id === object._id;
  }

  protected addDomainEvent(domainEvent: DomainEvent): void {
    this._domainEvents.push(domainEvent);
  }

  public getUncommittedEvents(): DomainEvent[] {
    return this._domainEvents;
  }

  public markEventsAsCommitted(): void {
    this._domainEvents = [];
  }
}

Read the full file on GitHub · 797 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 797 lines · 37 tokens per session scan A 9eb11363e804

Subscribe to this mod's changes

V3 Core Implementation is a skill published in the GitHub repository shyftlabs/continuum (84 stars, last pushed 5d ago), licensed Apache-2.0. It adds 37 tokens to every session and 5,158 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to V3 Core Implementation, differing in 0 lines, and is treated as a copy.