Agents autonomes
/SKILLLes agents autonomes sont des systèmes d'IA capables d'effectuer des décompositions de manière indépendante
name: autonomous-agents
description: Autonomous agents are AI systems that can independently decompose
goals, plan actions, execute tools, and self-correct without constant human
guidance. The challenge isn't making them capable - it's making them reliable.
Every extra decision multiplies failure probability.
risk: unknown
source: vibeship-spawner-skills (Apache 2.0)
date_added: 2026-02-27
Autonomous Agents
Autonomous agents are AI systems that can independently decompose goals,
plan actions, execute tools, and self-correct without constant human guidance.
The challenge isn't making them capable - it's making them reliable. Every
extra decision multiplies failure probability.
This skill covers agent loops (ReAct, Plan-Execute), goal decomposition,
reflection patterns, and production reliability. Key insight: compounding
error rates kill autonomous agents. A 95% success rate per step drops to
60% by step 10. Build for reliability first, autonomy second.
2025 lesson: The winners are constrained, domain-specific agents with clear
boundaries, not "autonomous everything." Treat AI outputs as proposals,
not truth.
Principles
- Reliability over autonomy - every step compounds error probability
- Constrain scope - domain-specific beats general-purpose
- Treat outputs as proposals, not truth
- Build guardrails before expanding capabilities
- Human-in-the-loop for critical decisions is non-negotiable
- Log everything - every action must be auditable
- Fail safely with rollback, not silently with corruption
Capabilities
- autonomous-agents
- agent-loops
- goal-decomposition
- self-correction
- reflection-patterns
- react-pattern
- plan-execute
- agent-reliability
- agent-guardrails
Scope
- multi-agent-systems → multi-agent-orchestration
- tool-building → agent-tool-builder
- memory-systems → agent-memory-systems
- workflow-orchestration → workflow-automation
Tooling
Frameworks
- LangGraph - When: Production agents with state management Note: 1.0 released Oct 2025, checkpointing, human-in-loop
- AutoGPT - When: Research/experimentation, open-ended exploration Note: Needs external guardrails for production
- CrewAI - When: Role-based agent teams Note: Good for specialized agent collaboration
- Claude Agent SDK - When: Anthropic ecosystem agents Note: Computer use, tool execution
Patterns
- ReAct - When: Reasoning + Acting in alternating steps Note: Foundation for most modern agents
- Plan-Execute - When: Separate planning from execution Note: Better for complex multi-step tasks
- Reflection - When: Self-evaluation and correction Note: Evaluator-optimizer loop
Patterns
ReAct Agent Loop
Alternating reasoning and action steps
When to use: Interactive problem-solving, tool use, exploration
REACT PATTERN:
"""
The ReAct loop:
- Thought: Reason about what to do next
- Action: Choose and execute a tool
- Observation: Receive result
- Repeat until goal achieved
Key: Explicit reasoning traces make debugging possible
"""
Basic ReAct Implementation
"""
from langchain.agents import createreactagent
from langchain_openai import ChatOpenAI
Define the ReAct prompt template
react_prompt = '''
Answer the question using the following format:
Question: the input question
Thought: reason about what to do
Action: tool_name
Action Input: input to the tool
Observation: result of the action
... (repeat Thought/Action/Observation as needed)
Thought: I now know the final answer
Final Answer: the answer
'''
Create the agent
agent = createreactagent(
llm=ChatOpenAI(model="gpt-4o"),
tools=tools,
prompt=react_prompt,
)
Execute with step limit
result = agent.invoke(
{"input": query},
config={"max_iterations": 10} # Prevent runaway loops
)
"""
LangGraph ReAct (Production)
"""
from langgraph.prebuilt import createreactagent
from langgraph.checkpoint.postgres import PostgresSaver
Production checkpointer
checkpointer = PostgresSaver.fromconnstring(
os.environ["POSTGRES_URL"]
)
agent = createreactagent(
model=llm,
tools=tools,
checkpointer=checkpointer, # Durable state
)
Invoke with thread for state persistence
config = {"configurable": {"thread_id": "user-123"}}
result = agent.invoke({"messages": [query]}, config)
"""
Plan-Execute Pattern
Separate planning phase from execution
When to use: Complex multi-step tasks, when full plan visibility matters
PLAN-EXECUTE PATTERN:
"""
Two-phase approach:
- Planning: Decompose goal into subtasks
- Execution: Execute subtasks, potentially re-plan
Advantages:
- Full visibility into plan before execution
- Can validate/modify plan with human
- Cleaner separation of concerns
Disadvantages:
- Less adaptive to mid-task discoveries
- Plan may become stale
"""
LangGraph Plan-Execute
"""
from langgraph.prebuilt import createplanandexecuteagent
Planner creates the task list
planner_prompt = '''
For the given objective, create a step-by-step plan.
Each
