Skip to content
Get MCP AdsGet MCP Ads, home
Start free
View as Markdown
RecipeMeta Ads

Inventory Meta audiences and where they serve

The audience estate mapped: custom, lookalike, saved, with usage, before any targeting decision.

IntentEvery audience, its definition, size band and the ad sets using it.

3
Steps
3
Tools
1
Rules
1
Failure modes

When to use it

Use it when

  • Quarterly hygiene.
  • Before consolidation or new lookalike builds.

Do not use it when

  • No specific contraindication beyond the preconditions below.

What it needs first

Required

Preconditions

  • The account is ticked in the dashboard, confirmed via list_accounts.

Inputs

window
Analysis window.Default: last 30 days.

Procedure

In order. Every tool named is one the gateway ships, and links to its reference.

  1. List audiences with types and sizes.

  2. Read definitions and sources for the ones in use.

  3. Map usage across ad sets.

Decision rules

The observable condition, what it lets you conclude, and what takes the conclusion back.

  • When

    Custom audiences built on sources that stopped updating

    Conclude

    Stale by construction: date the source and flag every ad set still using it.

Evidence every conclusion must carry

  • Every figure carries its account, metric and window.
  • Anything below a readable sample size is reported as unjudged, not as zero.

Where the agent stops

  • The readout changes nothing. Any change it motivates goes through Safe Writes: preview, human confirmation, then apply.

How it goes wrong quietly

The cases where the analysis is wrong and still looks right. Read them before trusting a number.

  • Size bands are estimates: never subtract two bands and present a number.

What the answer contains

01Readout
The figures, with windows and accounts named.
02Flags
What deserves a deeper skill or a human decision.