A: “Building LLM Agents” by O’Reilly (2025), “Hands-On Agentic AI” (Packt, 2026). But both are outdated within months. Use framework docs + ArXiv.
| Framework | Best for | Latest version | |-----------|----------|----------------| | | Complex stateful agents with cycles | 0.2.0+ | | AutoGen | Multi-agent conversations | 0.4.0 | | CrewAI | Role-based task automation | 0.70.0+ | | DSPy | Optimizing agent prompts & steps | 2.5.0 | | Haystack | RAG + agent pipelines | 2.3.0 | | Semantic Kernel | Microsoft enterprise agents | 1.12.0 | | Letta (ex-MemGPT) | Long-term memory agents | 0.4.0 | PDF download tip : Each framework offers a “stable docs PDF” – search “[framework] documentation PDF” for offline reading. No single “Agentic AI Bible PDF” exists, but you can compile these. Part 4: Production-Ready Patterns (The Real “Bible” Chapters) 4.1 ReAct Prompt Template (Classic) You are an agent with access to these tools: [list]. Question: input Thought: I need to do X. Action: tool_name(tool_input) Observation: result ... (repeat until answer) Final Answer: answer 4.2 Reflection Loop (Reflexion variant) for iteration in range(max_iterations): action = agent.plan(obs, memory) outcome = execute(action) if outcome.success: memory.store(outcome) break else: reflection = critic.reflect(outcome.error) memory.store(reflection) agent.update_plan(reflection) 4.3 Tool Calling Schema (OpenAI-compatible) "name": "search_web", "description": "Search the internet", "parameters": "type": "object", "properties": "query": "type": "string" , "required": ["query"] the agentic ai bible pdf upd
# research_agent.py # Requires: pip install langgraph langchain-openai tavily-python from langgraph.graph import StateGraph, END from langchain_openai import ChatOpenAI from langchain_community.tools.tavily_search import TavilySearchResults from typing import TypedDict, List | Framework | Best for | Latest version
def should_continue(state): if state["iteration"] >= 2: return END else: return "research" Question: input Thought: I need to do X
class AgentState(TypedDict): query: str research_notes: List[str] iteration: int
That curated collection, updated quarterly, is the real “Agentic AI Bible.”