agent-designer
Use when the user asks to design a multi-agent system, pick an orchestration pattern (supervisor/swarm/pipeline), generate tool schemas for agents, or evaluate agent execution logs for cost, latency, and failure bottlenecks. Examples: 'design an agent architecture for research automation', 'generate Anthropic tool schemas from these tool descriptions', 'analyze these agent run logs for bottlenecks'. NOT for Claude Code workflow files (use workflow-builder) or single-agent prompt design (use agent-workflow-designer).
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/alirezarezvani/claude-skills --skill agent-designer- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads agent-designer automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Agent Designer — Multi-Agent System Architecture
Design, schema-generate, and evaluate multi-agent systems with three deterministic tools. The scripts are the workflow — do not freehand an architecture when the planner can score one from requirements.
When to use
- Designing a new multi-agent system from requirements (pattern choice, roles, comms)
- Generating provider-ready tool schemas (Anthropic + OpenAI formats) from plain tool descriptions
- Evaluating execution logs: success rate, latency distribution, cost, bottlenecks
When NOT to use: Claude Code Workflow-tool automations → workflow-builder; single-agent workflow scaffolds → agent-workflow-designer; multi-agent fan-out at runtime → agenthub.
Pattern decision table
| Choose | When | Watch out for |
|---|---|---|
| Single agent | One bounded task, < ~5 tools | Don't add agents you don't need |
| Supervisor | Central decomposition, specialists report back | Supervisor becomes the bottleneck |
| Pipeline | Strictly sequential stages with handoffs | Rigid order; slowest stage gates throughput |
| Hierarchical | Multiple org layers, > ~8 agents | Communication overhead per level |
| Swarm | Parallel peers, fault tolerance over predictability | Hard to debug; needs consensus rules |
The planner applies this scoring deterministically — run it rather than picking by feel.
Workflow
All paths relative to this skill folder. Each step's JSON output is the next step's design input.
1. Design the architecture
Write a requirements JSON (copy assets/sample_system_requirements.json — keys: goal, tasks[], constraints{max_response_time, budget_per_task, concurrent_tasks}, team_size):
python3 agent_planner.py requirements.json --format json -o arch
Emits arch.json with architecture_design (pattern, agents, communication links), mermaid_diagram, and implementation_roadmap. Read architecture_design.pattern and the per-agent role list; present the mermaid diagram to the user.
2. Generate tool schemas
Describe each agent's tools in plain JSON (copy assets/sample_tool_descriptions.json), then:
python3 tool_schema_generator.py tool_descriptions.json --validate -o tools
Emits tools.json (tool_schemas, validation_summary) plus provider-specific tools_anthropic.json / tools_openai.json. Gate: every tool must print ✓ Valid. Fix any invalid schema before proceeding — never hand an agent an unvalidated schema.
3. Evaluate execution logs
Once the system runs (or against assets/sample_execution_logs.json for a dry run):
python3 agent_evaluator.py execution_logs.json --detailed -o eval
Emits eval.json with summary, agent_metrics, bottleneck_analysis, error_analysis, cost_breakdown, sla_compliance, and optimization_recommendations, plus split files (eval_errors.json, eval_recommendations.json).
4. Verification loop
The design is not done until:
tool_schema_generator.py --validatereports 0 invalid schemas.agent_evaluator.pyon a pilot run reports 0 critical issues (the tool printsCRITICAL: N critical issueswhen found). If N > 0, apply the top item ineval_recommendations.json, re-run the pilot, and re-evaluate.- Compare your outputs against
expected_outputs/to confirm the schema shape you're consuming hasn't drifted.
References
references/agent_architecture_patterns.md— pattern trade-offs in depthreferences/tool_design_best_practices.md— schema, idempotency, error-handling rulesreferences/evaluation_methodology.md— metric definitions the evaluator implements
FAQ
What does the agent-designer skill do?
Use when the user asks to design a multi-agent system, pick an orchestration pattern (supervisor/swarm/pipeline), generate tool schemas for agents, or evaluate agent execution logs for cost, latency, and failure bottlenecks. Examples: 'design an agent architecture for research automation', 'generate Anthropic tool schemas from these tool descriptions', 'analyze these agent run logs for bottlenecks'. NOT for Claude Code workflow files (use workflow-builder) or single-agent prompt design (use agent-workflow-designer).
How do I install agent-designer?
Run npx skills add https://github.com/alirezarezvani/claude-skills --skill agent-designer in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/agent-designer/ (personal) or .claude/skills/agent-designer/ (project).
Which AI agents can use agent-designer?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is agent-designer safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains agent-designer?
It is published by alirezarezvani in alirezarezvani/claude-skills. It has 685 recorded installs.
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