Feature

Multi-agent
delegation.

One lead agent delegates tasks to specialist sub-agents. Each has its own tools, knowledge, and instructions — working together seamlessly.

Using Sub-Agents — Multi-Agent Delegation

@supportLead

Routes to specialists

@billing Refunds, invoices

@orders Tracking, returns

@technical Bug reports, setup

Specialist routing.

One lead, many specialists

A support lead agent routes billing questions to @billing, order issues to @orders, and bug reports to @technical.
Better accuracy through focus

Specialist agents with narrow tool sets and focused instructions perform better than one agent doing everything.
Scales with your team

Add new specialist agents as your workflows grow. No need to reconfigure the lead agent.

Up to 3 levels deep

Agent A can call Agent B, which can call Agent C. Complex workflows, simple configuration.
Circular reference prevention

Macha automatically prevents infinite loops — agents can't call themselves or create cycles.
15 iterations per sub-agent

Each sub-agent gets up to 15 tool-call iterations to complete its task before returning results.

Level 1 @supportLead

Level 2 @billingAgent

Level 3 @refundProcessor

Max depth: 3 levels · Circular refs blocked

@billingAgent

Stripe tools (5)

Zendesk tools (3)

Knowledge base (billing policies)

Claude Sonnet 4.5

Own tools and integrations

The billing agent has Stripe access. The shipping agent has tracking tools. Each agent only sees what it needs.
Own model selection

Use a fast model for the router, a powerful model for complex decisions. Mix and match.
Own knowledge base

Each sub-agent can have its own data sources — billing policies, product docs, or internal wikis.

Invisible delegation

The user sees one agent. Behind the scenes, specialists are doing the work and returning results.
Tool tracking in the UI

Sub-agent tool calls appear in the "Tools Used" popup with indented status, so your team can audit every step.
Works in chat and autonomous mode

Sub-agents work whether you're chatting with the lead agent or it's running on a trigger.