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Create Meta Lookalike Audience

Creates a lookalike audience from a source custom audience.

Type
Makes changes
Credits
5
Platform
Meta Ads
Approval
Preview first, applied after you approve

What it does

Creates a lookalike audience from a source custom audience. source_audience_id from list_meta_audiences. country ISO alpha-2. ratio 0.01-0.20 (1%-20%; smaller = more similar). confirm=false = preview.

MCP: create_meta_lookalike_audience

How to use it

You don't call tools by name. Write what you want in ChatGPT, Claude or another assistant connected to Opus Growth, in your own words; it picks this tool when it fits.

Because this tool changes your account, your assistant first shows a preview of exactly what will change. Nothing is applied until you say yes, and every applied change is written to your audit log.

Parameters

NameTypeRequiredDefault
account_idstringRequired·Advertising account identifier to query or change. Use the exact ID returned by the relevant account-listing tool, not the display name.
namestringRequired·Human-readable name for the resource being created or updated.
source_audience_idstringRequired·Exact source audience identifier to target. Use the ID returned by an Opus Growth list or create operation, not a display name.
countrystringRequired·Target country code or country name in the provider format required by this operation.
rationumberOptional0.01Numeric ratio value for create meta lookalike audience. Use the provider's expected unit, range, and precision.
confirmbooleanOptionalfalseSafety confirmation for a state-changing operation. Leave false to preview or validate; set true only after the user explicitly approves the shown change.
Connect Meta Adsconnect_meta_adsCopy Meta Entitycopy_meta_entityCreate Meta A/B Testcreate_meta_ab_testCreate Meta Ad Setcreate_meta_adsetCreate Meta Campaigncreate_meta_campaignCreate Meta Carousel Adcreate_meta_carousel_adCreate Meta Custom Conversioncreate_meta_custom_conversionCreate Meta Dynamic Adcreate_meta_dynamic_adCreate Meta Engagement Audiencecreate_meta_engagement_audience