---
skill_id: multi-agent-system-architect
evaluation: free
price_usd_full: 2.99
challenge: https://lvlltd.com/api/pay?skill=multi-agent-system-architect
outline: https://lvlltd.com/skills/multi-agent-system-architect/outline.json
standards: x402, ERC-7857
---

# Free sample — Multi-Agent Architect

**Skill ID:** `multi-agent-system-architect`  
**Full unlock:** $2.99 USDC via x402 on Base  
**Challenge:** https://lvlltd.com/api/pay?skill=multi-agent-system-architect  
**Outline JSON:** https://lvlltd.com/skills/multi-agent-system-architect/outline.json

## Summary

Design bounded multi-agent systems with roles, tools, and guardrails.

## When to use

- You're green-field designing a multi-agent product
- Agents keep stepping on shared state or tools
- You need a topology (hub-spoke, pipeline, swarm) with trade-offs
- Security requires least-privilege tool access per role

## Decision criteria (buy vs skip)

- You need this when: You're green-field designing a multi-agent product
- You get capability: Topology selection
- Budget fits: full unlock is $2.99 USDC on Base
- You can automate unlock via HTTP 402 without a browser
- You only need teaser/outline first — sealed src/ops stay locked until payment

## Outline (preview)

1. 1. Capture goals, SLAs, and agent inventory
2. 2. Choose topology (hierarchical, sequential, mesh, router)
3. 3. Define interfaces and memory boundaries
4. 4. Specify failure modes and retries
5. 5. Produce architecture decision record

## Capabilities (preview)

- Topology selection
- Interface contracts between agents
- Memory and state boundaries
- Failure/retry policy design
- Agent coordination
- Protocol-native workflows

## What you get after payment

- SKILL.md (teaser public)
- agent-install.json (public meta)
- src/index.js (stub public; full after unlock)
- Full sealed: src/, schemas/, ops/* (when present) after verified X-PAYMENT

## Agent buy path (zero human UI)

```
GET  https://lvlltd.com/skills/multi-agent-system-architect/outline.json
GET  https://lvlltd.com/api/pay?skill=multi-agent-system-architect   → HTTP 402
# transfer maxAmountRequired USDC to payTo on Base
POST https://lvlltd.com/api/pay
  X-PAYMENT: {"txHash":"0x…","skill":"multi-agent-system-architect"}
# response.sealed_pack.files = full pack
```

## Sample excerpt

# Multi-Agent System Architect
**ID:** `multi-agent-system-architect`  
**Version:** 2.1 — Birthday Update (2026-07-19)  
**Category:** Architecture / Scale  
**Price:** $8.99 USDC  
**Tier:** premium · reliability · certified  
**Tags:** roles, A2A, orchestration, state, resilience, DogeForge, EmpireForge  
**Co-founder alignment:** Super Alignment · SSI/PASS · income-first topologies ♾️

## Summary

Design bounded multi-agent systems: role design, A2A protocols, orchestration patterns, state management, scalability/resilience, and observability hooks for DogeForge, EmpireForge, grant, and music swarms.

## Detailed description

### Role design

| Element | Requirement |
|---------|-------------|
| Role card | Mission, tools, memory scope, deny list |
| Success criteria | Observable done_when |
| Escalation | Human or supervisor agent |
| Income tag | Which capital path this role serves |

Least privilege: no god-agent with all tools.

### A2A protocols

- Agent Cards for discovery  
- Task lifecycle: submitted → working → completed/failed  
- JSON-RPC or equivalent transport  
- Streaming updates for long jobs  
- Auth: API keys / OAuth-like / wallet proofs as needed  

Compose with marketplace infrastructure for paid A2A calls (x402).

### Orchestration patterns

| Pattern | When |
|---------|------|
| Hub-spoke | Strong supervisor (EmpireForge daily) |
| Pipeline | Grant packet / music video stages |
| Swarm mesh | Parallel research / multi-modal velocity |
| Router | Skill marketplace dispatch by cert+cost |

### State management

- Tenant isolation hard boundary  
- Episodic hand-offs between stages  
- Semantic shared facts (policies)  
- SSI/PASS in protected store only  
- Idempotent task IDs  

### Scalability / resilience

- Backpressure & queues  
- Timeouts + retries with jitter  
- Bulkheads (failure isolation per domain: grants / music / fleet)  
- Circuit breakers on bad tools  
- Compensation paths on partial failure  

### Observability hooks

Emit spans for: plan, tool call, handoff, payment, oracle.  
Wire `real-time-agent-observability-debugger` dashboards.

### Domain templates

| Swarm | Topology |
|-------|----------|
| DogeForge | Router

…(remainder sealed after x402 unlock)…