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Agentic patterns and Claude Code examples
Agentic AI Systems is a reference repo for common orchestration patterns like chaining, routing, parallel work, orchestration, and evaluator loops. It pairs those explanations with Claude Code-specific components such as subagents, commands, skills, and hooks, plus runnable pattern files checked in CI.

Builders who want a clear map for structuring agent workflows, subagents, and Claude Code setup.
You can pick a pattern, copy the matching files, and build agent workflows with less guesswork.
What it does
Foundations for agentic systems
Explains the base ideas behind augmented LLMs and what changed in the 2025-2026 agent stack.
Workflow patterns
Covers baseline, prompt chaining, routing, parallelization, orchestrator-workers, and evaluator-optimizer flows.
Autonomous agent patterns
Shows when to let the model control the flow, including a multi-window variant for long runs.
Claude Code implementation map
Connects subagents, slash commands, skills, and hooks to their Claude Code file locations.
Patterns as code
Stores patterns as runnable `.nika.yaml` files so they can be checked in CI.
README
Agentic AI Systems π
Agentic systems explained with chickens β because AI orchestration doesn't have to be scary
Main Agent spawns Subagents like a hen with her chicks ππͺΊπ¦
π¦ Foundations β’ βοΈ Workflows β’ π Autonomous β’ π As Code β’ π οΈ Implementation β’ πΊοΈ Guides
Overview
%%{init: {'theme': 'base', 'themeVariables': { 'primaryColor': '#8b5cf6', 'primaryTextColor': '#fff', 'primaryBorderColor': '#7c3aed', 'lineColor': '#a78bfa', 'secondaryColor': '#ec4899', 'tertiaryColor': '#6366f1', 'noteTextColor': '#fff', 'noteBkgColor': '#8b5cf6', 'textColor': '#fff' }}}%%
mindmap
root((π Agentic Systems))
π¦ Foundations
Augmented LLM
What Changed 2026
βοΈ Workflows
ποΈ Baseline
βοΈ Chaining
π¦ Routing
π€οΈ Parallel
π¦ Orchestrator
π©» Evaluator
π Autonomous Agent
The Alternative
Multi-Window
π οΈ Implementation
π¦ Subagent
𦴠Command
π Skill
πͺ Hook
π Patterns as Code
Check before
Trace after
[!TIP] New in the 2026 edition β ποΈ What Changed 2025-2026 (the dated map: context engineering, the multi-agent debate, the AGENTS.md Β· SKILL.md Β· MCP stack, harness engineering) and π Patterns as Code (every pattern as a runnable file β checked in CI on every push, no API key needed).
β¬οΈ real capture: a repeated prompt graduates into a checked, runnable file β every pattern in this repo works this way Β· and three of them run a real campaign daily π°οΈ
πΊοΈ Navigation
π¦ FoundationsThe building block for everything
βοΈ WorkflowsPredefined orchestration β code controls the flow
|
π Autonomous AgentDynamic autonomy β LLM controls the flow
π οΈ ImplementationClaude Code components & architecture
πΊοΈ Guides & π Reference
|
Quick Decision
%%{init: {'theme': 'base', 'themeVariables': {'lineColor': '#64748b'}}}%%
flowchart LR
START((π― Task)) --> DEST{Destructive?}
DEST -->|Yes| WIZ[π§ Wizard]
DEST -->|No| COMP{Complex?}
COMP -->|No| BASE[ποΈ Baseline]
COMP -->|Yes| PRED{Predictable<br/>steps?}
PRED -->|Yes| WORK{Need<br/>specialists?}
PRED -->|No| AGENT[π Autonomous]
WORK -->|No| CHAIN[βοΈ Chain]
WORK -->|Yes| ORCH[π¦ Orchestrator]
classDef default fill:#f8fafc,stroke:#64748b,stroke-width:1px,color:#1e293b
classDef decision fill:#fef3c7,stroke:#f59e0b,stroke-width:2px,color:#92400e
classDef baseline fill:#64748b,stroke:#475569,stroke-width:2px,color:#ffffff
classDef wizard fill:#14b8a6,stroke:#0d9488,stroke-width:2px,color:#ffffff
classDef workflow fill:#8b5cf6,stroke:#7c3aed,stroke-width:2px,color:#ffffff
classDef agent fill:#ec4899,stroke:#db2777,stroke-width:2px,color:#ffffff
START:::decision
DEST:::decision
COMP:::decision
PRED:::decision
WORK:::decision
BASE:::baseline
WIZ:::wizard
CHAIN:::workflow
ORCH:::workflow
AGENT:::agent
| Situation | β Use |
|---|---|
| Simple task (1 step) | ποΈ Baseline |
| Sequential (2-4 steps) | βοΈ Prompt Chaining |
| Categorize inputs | π¦ Routing |
| Independent subtasks | π€οΈ Parallelization |
| Multiple specialists | π¦ Orchestrator-Workers |
| Quality iteration | π©» Evaluator-Optimizer |
| Open-ended / unknown steps | π Autonomous Agent |
| Destructive operations | π§ Wizard |
| Long-running (>10 min) | π₯οΈ Multi-Window Context |
Anthropic Taxonomy
%%{init: {'theme': 'base', 'themeVariables': {'lineColor': '#64748b'}}}%%
flowchart LR
subgraph WORKFLOWS["βοΈ WORKFLOWS"]
direction TB
W1[ποΈ Baseline]
W2[βοΈ Prompt Chaining]
W3[π¦ Routing]
W4[π€οΈ Parallelization]
W5[π¦ Orchestrator]
W6[π©» Evaluator]
end
subgraph AGENTS["π AUTONOMOUS AGENT"]
direction TB
A1[π The Alternative]
A2[π₯οΈ Multi-Window variant]
end
CODE[π Code controls] --> WORKFLOWS
WORKFLOWS --> LLM[π§ LLM controls]
LLM --> AGENTS
classDef workflowBox fill:#ede9fe,stroke:#8b5cf6,stroke-width:2px,color:#5b21b6
classDef agentBox fill:#fce7f3,stroke:#ec4899,stroke-width:2px,color:#9d174d
classDef control fill:#f1f5f9,stroke:#64748b,stroke-width:1px,color:#475569
WORKFLOWS:::workflowBox
AGENTS:::agentBox
CODE:::control
LLM:::control
Key distinction: Workflows have predefined paths (code controls). Agents decide their own path (LLM controls).
Critical Rule
%%{init: {'theme': 'base', 'themeVariables': {'lineColor': '#64748b'}}}%%
flowchart LR
U1[πββοΈ User] -->|request| MA[π Main Agent]
MA -->|πͺΊ spawn| SA1[π¦ Subagent]
MA -->|πͺΊ spawn| SA2[π¦ Subagent]
SA1 -->|result| MA
SA2 -->|result| MA
MA -->|response| U2[πββοΈ User]
SA1 x--x|"β CANNOT spawn"| SA3[π¦]
classDef user fill:#6366f1,stroke:#4f46e5,stroke-width:2px,color:#ffffff
classDef main fill:#f59e0b,stroke:#d97706,stroke-width:2px,color:#ffffff
classDef sub fill:#ec4899,stroke:#db2777,stroke-width:2px,color:#ffffff
classDef blocked fill:#ef4444,stroke:#dc2626,stroke-width:2px,color:#ffffff,stroke-dasharray: 5 5
U1:::user
U2:::user
MA:::main
SA1:::sub
SA2:::sub
SA3:::blocked
π¦ Subagents cannot spawn other π¦ subagents. All delegation flows through π Main Agent.
Repository Structure
.
βββ README.md # π You are here
β
βββ foundations/ # π¦ Core concepts
β βββ augmented-llm.md
β
βββ workflows/ # βοΈ Predefined orchestration
β βββ 00-baseline.md
β βββ 01-prompt-chaining.md
β βββ 02-routing.md
β βββ 03-parallelization.md
β βββ 04-orchestrator-workers.md
β βββ 05-evaluator-optimizer.md
β
βββ agents/ # π Autonomous Agent (the alternative)
β βββ autonomous.md # The pattern
β βββ multi-window.md # Variant
β
βββ implementation/ # π οΈ Claude Code specifics
β βββ components/ # π¦π¦΄ππͺ
β βββ architecture/ # 5-layer system
β
βββ guides/ # πΊοΈ Selection & use cases
β βββ use-cases/ # 6 validated examples
β
βββ reference/ # π Glossary, standards
References
| Resource | Link |
|---|---|
| Building Effective Agents | anthropic.com/engineering |
| Claude Code Docs | docs.anthropic.com |
| Agent SDK | docs.anthropic.com/agent-sdk |
| Anthropic Cookbook | github.com/anthropics |
| Agent Skills spec | agentskills.io |
| Agentic AI Foundation (MCP Β· AGENTS.md Β· goose) | aaif.io |
| Patterns as runnable files (this repo) | patterns-as-code/ |
Contributing
Contributions welcome! See CONTRIBUTING.md.
Requirements: Official sources β’ Code examples β’ Mermaid diagrams β’ Established format
Files in the repo
- .github
- .obsidian
- agents
- foundations
- guides
- implementation
- patterns-as-code
- reference
- workflows
- .DS_Store
- .gitignore
- CONTRIBUTING.md
- LICENSE
- README.md
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