Agentic Blueprints 29

Reflexion

io.github.langchain-ai/reflexion

LangGraph

An answerer that critiques itself with citations: draft, self-review for missing and superfluous content, search to fill gaps, revise.

Plan-and-Execute (LangGraph tutorial)

io.github.langchain-ai/plan-and-execute-tutorial

LangGraph

The original plan-and-execute notebook: a planner writes the step list, an executor works through it, and a replanner revises as results come in.

WebVoyager

io.github.langchain-ai/web-voyager

LangGraph

A vision-enabled browser agent that looks at annotated screenshots and decides where to click, scroll, and type until the task is done.

Agent Patterns Gallery

io.github.openai/agent-patterns-gallery

Custom

Sixteen single-file patterns from OpenAI: deterministic pipelines, agents-as-tools, parallelization, routing, LLM-as-judge, guardrails, human-in-the-loop.

Self-Evaluation Loop Flow

io.github.crewaiinc/self-evaluation-loop-flow

CrewAI

One crew writes in Shakespeare's voice, a second crew reviews the output, and the flow loops the feedback until the writing passes.