Reference / MCP tool reference
Reference
Deprecated: build a count
create_search: deprecated; use compile_audience, then count_audience instead.
Deprecated: adds filters to a count held in the server session. Use compile_audience, then count_audience instead. count_audience takes the whole audience definition in one call, so there is no session state to build up, and compile_audience turns a brief into that definition. It stops working 12 months after the new tools launch, after three emailed notices; https://emailmovers.com/mydatahub/docs/migrate maps every call. Lawful basis is UK GDPR Article 6(1)(f) legitimate interests; email audiences include corporate subscribers only by default (PECR), so sole traders and ordinary partnerships are left out unless the toggle is changed.
| Property | Value |
|---|---|
| Tool name | create_search |
| Replaced by | compile_audience, then count_audience |
| What changes | count_audience takes the whole audience definition in one call, so there is no session state to build up, and compile_audience turns a brief into that definition. |
| Annotations | readOnlyHint false, destructiveHint false, idempotentHint true, openWorldHint false |
| Input and output | The old shapes, unchanged during the deprecation window. The schemas are open objects. |
The migration guide maps every old call to its replacement, with before and after examples.