Performance Max Optimization With AI (Asset Groups, Audience Signals, Search Themes)

Why Performance Max is hard to optimize without the right tools

Performance Max replaced Smart Shopping and Local campaigns in 2022. It now accounts for a large share of Google Ads spend at most e-commerce and local advertisers. The core problem is visibility. PMax consolidates placements across Search, Shopping, YouTube, Display, Discover, and Maps, and Google's reporting rolls most of that up. Without API-level access, you are working with campaign totals and almost no asset-level signal.

The second problem is write access. Most AI-adjacent tools for PMax are read-only: they pull performance data and surface insights. They cannot touch the asset groups, cannot swap a low-scoring headline, cannot add a search theme, cannot modify the audience signals attached to a specific asset group. PaidSync has write access to all of it.

The third problem is signal quality. PMax bidding relies on your conversion data. If the conversion goal is misconfigured, if offline visit data is missing, or if the wrong conversion actions are weighted, the machine-learning model is optimizing toward the wrong outcome. PaidSync's store-visit and conversion diagnostic tools surface these mismatches before they compound.

The 18 Performance Max tools PaidSync exposes

These are the PMax-specific tools available inside Claude or ChatGPT through the PaidSync Google Ads connection. They run against the Google Ads API v17+ and return structured data for the AI to reason over.

Campaign-level tools

• list_performance_max_campaigns - Returns all PMax campaigns with budget, status, target ROAS, target CPA, and conversion goals.
• get_pmax_campaign_details - Full configuration for a single PMax campaign including bidding strategy, budget type, and final URL expansion settings.
• update_pmax_campaign - Edits campaign-level settings: budget, bidding strategy, target ROAS, and URL expansion rules.
• get_pmax_performance_report - Returns cost, conversions, conversion value, ROAS, and impression share at campaign level for a date range.
• get_store_visit_conversions - Pulls offline store-visit conversion data attributed to PMax campaigns, including estimated visits and value.

Asset group tools

• list_asset_groups - Lists all asset groups within a PMax campaign with their names and status.
• get_asset_group_details - Returns all assets in a group: up to 15 headlines, 5 descriptions, 5 images, 5 logos, 5 videos, and their current approval status.
• get_asset_performance_breakdown - Returns per-asset performance ratings (Low, Good, Best) for each creative element in an asset group.
• update_asset_group - Adds, replaces, or removes individual assets within an asset group.
• create_asset_group - Creates a new asset group within an existing PMax campaign with a full asset set.
• pause_asset_group - Pauses a specific asset group without pausing the campaign.

Audience signal tools

• get_audience_signals - Lists all audience signals attached to an asset group: customer match lists, custom segments, remarketing lists, and in-market audiences.
• update_audience_signals - Adds or removes audience signals from an asset group.
• list_customer_match_lists - Returns available customer match lists for use as signals, with size estimates where available.

Search theme tools

• get_search_themes - Returns all search themes attached to an asset group with their approval status.
• update_search_themes - Adds or removes search themes from an asset group (up to 25 per group).

Diagnostic and listing tools

• get_pmax_insights - Returns audience, asset, and product group insights from the PMax Insights API where available.
• get_pmax_channel_breakdown - Splits performance by channel category where Google exposes it (Search, Shopping, YouTube, Display).

A 7-step PMax optimization workflow using AI

This is the workflow for a full PMax audit and optimization pass. Each step maps to a specific tool call. Run it at the start of a new month or after a major budget change.

Step 1. Inventory all PMax campaigns

Start with the campaign list so you know what you are working with.

Step 2. Pull asset group details for each campaign

Once you have the campaign list, go one level deeper into the asset groups that matter.

Step 3. Identify low-scoring assets

This is where PMax visibility usually breaks down. The performance breakdown shows exactly which creative elements Google has flagged.

Step 4. Review and update audience signals

Audience signals guide Google's initial targeting before the model expands. A missing customer list or stale remarketing segment here means the model starts cold.

Step 5. Audit and refresh search themes

Search themes are the highest-leverage signal in PMax for advertisers who also run Search campaigns. They tell Google which intent areas to prioritize before it auto-expands.

Step 6. Check store-visit conversion data

For local and retail accounts, store-visit conversions often represent the majority of actual value. Missing or misconfigured visit data leads the bidding model toward wrong signals.

Step 7. Push changes and confirm

After reviewing, push the approved changes and re-pull the asset scores to confirm the update took.

PMax vs Search: when to use each

The most common question agencies bring to this topic. The answer is usually not either/or, it is both running in parallel with clear scope boundaries.

What Ryze and other read-only tools miss

Several AI tools and MCP servers can query PMax data. The gap is write access. Reading a low-scoring asset is the easy part. Replacing it, adding a search theme, swapping an audience signal, and confirming the change in the same conversation is what PaidSync's full-stack PMax tooling enables.

The specific capability that no read-only tool replicates is the audit-then-fix loop. PaidSync lets Claude identify the three Low-rated headlines, propose replacements based on the Best-rated patterns in the same group, push the update, and re-read the asset group to confirm the change landed, all without leaving the conversation.

Frequently asked