REWOO (Reasoning Without Observation)

What Problem It Solves

Tool loops can be slow/expensive due to multiple round-trips. REWOO reduces this by:

• planning tool calls up front
• executing tools in batch
• synthesizing once

Core Flow

flowchart TD
  U["Task"] --> P["Plan tool_calls (JSON)"]
  P --> T["Run tools (batch)"]
  T --> S["Synthesize"]
  S --> O["Final"]

Evolution Path

• A “workflow” alternative to ReAct when tool costs dominate
• Often combined with: verification after synthesis

Repo Reference

• Code: src/agent_patterns_lab/patterns/rewoo.py
• Example: examples/52_rewoo.py
• Tests: tests/test_rewoo.py