# Transform


`transform` builds a typed `BuilderSpec` for a sequential
transformation pipeline. Each `step` is a `{ name; tool; args ?
[]; env ? {}; }` record carrying a tool (raw or pre-constructed
via `mb.operations.tool`). Tools are deduplicated and emitted as
`declareTool` operations; steps become `runTool` operations; the
`outputs` list expands to `transformOutput` operations.

The constructor wraps the `transform-output` effect of the new
framework — no new effect tags are introduced.