Decoder. plain-English AI glossary

Chain of Tools

▲ Rising

Using several tools in sequence, where each one’s output feeds the next.

Think of it like

An assembly line — one station’s finished part becomes the raw material for the next.

Example

The agent searches for a company, feeds the result into a scraper, then pipes that into a summarizer — three tools, one flow.

How it actually works

Chaining lets an agent solve problems no single tool can, by composing them: search then read then compute, each step consuming the last result. The reliability question is the whole chain, not each link — an early error propagates and compounds, so a good search feeding a bad extractor still yields garbage. Longer chains are more capable and more fragile at once.

For product teams

Composing tools unlocks bigger tasks, but every added link is another place to break.

For engineers

Sequential tool invocations where each output becomes the next call’s input, forming a data pipeline.

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