Glossary · Agents & tools
ReAct
An agent pattern that interleaves task reasoning, a concrete action, and an observation returned by the environment before deciding the next step.
Why it matters
Environment feedback can correct assumptions and ground later decisions instead of forcing the model to complete the entire task from internal generation alone.
In practice
Expose a small set of typed tools, return concise observations, cap the loop, and verify the final artifact rather than storing private reasoning traces.
Common confusion
ReAct is a prompting and control pattern, not a guarantee of autonomy, correctness, or safe tool use.
Related terms
Sources
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