Chapter 6: Plugin SDK and Extensibility Patterns

Welcome to Chapter 6: Plugin SDK and Extensibility Patterns. In this part of Claude Flow Tutorial: Multi-Agent Orchestration, MCP Tooling, and V3 Module Architecture, you will build an intuitive mental model first, then move into concrete implementation details and practical production tradeoffs.

This chapter covers plugin-based extension patterns for tools, hooks, workers, providers, and security helpers.

Learning Goals

• create extension boundaries with plugin builders and registries
• separate tool-only, hook-only, and worker extensions cleanly
• apply security utilities when exposing new commands or paths
• standardize extension review before production rollout

Extension Baseline

Start with narrow plugin scope, enforce input/path validation, and gate rollout with integration tests. Prefer explicit lifecycle ownership for each plugin to prevent hidden coupling.

Source References

• @claude-flow/plugins
• @claude-flow/security
• V3 README

Summary

You can now extend Claude Flow with better modularity and lower operational risk.

Next: Chapter 7: Testing, Migration, and Upgrade Strategy

Source Code Walkthrough

v3/swarm.config.ts

The getActiveAgentsForPhase function in v3/swarm.config.ts handles a key part of this chapter's functionality:

}

export function getActiveAgentsForPhase(phaseId: PhaseId): string[] {
  const phase = getPhaseConfig(phaseId);
  if (!phase) return [];

  const agents: string[] = [];
  for (const domain of phase.activeDomains) {
    agents.push(...getAgentsByDomain(domain));
  }

  return [...new Set(agents)];
}

export function createCustomConfig(overrides: Partial<V3SwarmConfig>): V3SwarmConfig {
  return {
    ...defaultSwarmConfig,
    ...overrides,
    performance: {
      ...defaultSwarmConfig.performance,
      ...overrides.performance
    },
    github: {
      ...defaultSwarmConfig.github,
      ...overrides.github
    },
    logging: {
      ...defaultSwarmConfig.logging,
      ...overrides.logging
    }
  };
}

This function is important because it defines how Claude Flow Tutorial: Multi-Agent Orchestration, MCP Tooling, and V3 Module Architecture implements the patterns covered in this chapter.

How These Components Connect

flowchart TD
    A[getActiveAgentsForPhase]