API Reference › Google Ads › update_ad_headlines

update_ad_headlines

Google Ads Write

🚨 **IF THIS TOOL RETURNS A QUOTA ERROR:** - The error message will include a clickable upgrade link - Show the FULL error message to the user (it contains the upgrade link) - DO NOT attempt to work ar

Endpoint

POST https://api.adspirer.ai/api/v1/tools/update_ad_headlines/execute

Headers

Description

🚨 **IF THIS TOOL RETURNS A QUOTA ERROR:** - The error message will include a clickable upgrade link - Show the FULL error message to the user (it contains the upgrade link) - DO NOT attempt to work around the error or use alternative data - DO NOT create campaigns or perform actions without valid tool data - STOP and direct the user to upgrade via the provided link Update headlines for a Responsive Search Ad (RSA). **MANDATORY WORKFLOW:** 1. Call `get_campaign_structure` to find ad_id and ad_group_id 2. Review current headlines to understand what's there 3. Prepare 3-15 new headlines following the category system: - Category A (5): What It Is (product/feature identity) - Category B (6): Benefits/Outcomes - Category C (4): Pain Points, Proof & CTAs 4. Validate headlines (max 30 chars each, no "!" marks, no unverified superlatives) 5. Get user approval before updating 6. Call this tool with ad_id, ad_group_id, and headlines **Headline Rules (from creative guidelines):** - Max 30 characters per headline - 3-15 headlines required - Headlines should work in ANY combination - Avoid exclamation marks (may trigger Google disapproval) - Avoid unverified superlatives ("Best", "#1", "Leading", "Top") - Any random pair should make logical sense together **Parameters:** - ad_id: The ad ID to update (REQUIRED) - ad_group_id: The ad group ID (REQUIRED) - headlines: List of 3-15 headlines (REQUIRED) - customer_id: Optional **Execution time:** 2-4 seconds **WARNING:** Updated ads go through Google's review process (typically 24-48 hours). **Example:** User: "Update my ad headlines to be more compelling" Agent: 1. Uses get_campaign_structure to find ad_id and ad_group_id 2. Shows current headlines to user 3. Prepares new headlines across all 3 categories 4. Gets user approval 5. Uses update_ad_headlines with approved headlines

Request body

All tool arguments are wrapped in an arguments object.

FieldTypeDescription
ad_idstring requiredThe ad ID to update. Get from get_campaign_structure (look in ad_groups -> ads section).
ad_group_idstring requiredThe ad group ID the ad belongs to. Get from get_campaign_structure.
headlinesarray requiredList of 3-15 headlines. Each headline max 30 characters. Headlines should work well in any combination. Avoid exclamation marks and unverified superlatives (Best, #1, etc.).
customer_idstring optionalGoogle Ads customer ID. Required for multi-account users. Get from list_connected_accounts.

Example request

{
  "arguments": {
    "ad_id": "string",
    "ad_group_id": "string",
    "headlines": [
      "string"
    ],
    "customer_id": "string"
  }
}

Example responses

200 — Success

{
  "success": true,
  "data": {
    "text": "(tool-specific textual output for update_ad_headlines)",
    "quota": {
      "used": 42,
      "limit": 150,
      "tier": "plus",
      "period_end": "2026-05-01"
    }
  },
  "tool": "update_ad_headlines"
}

400 — Tool-level error (bad arguments / multi-account selection)

{
  "success": false,
  "error": "You have 25 meta_ads accounts connected. Please specify which account to use by passing the ad_account_id parameter:\n  - Acme Holdings (ad_account_id=\"act_123456789\")\n  - Acme EU (ad_account_id=\"act_987654321\")",
  "is_error": true,
  "tool": "update_ad_headlines"
}

402 — Quota exhausted

{
  "success": false,
  "error": "\ud83d\udea8 Monthly limit reached (150/150 tool calls on Plus tier).\nUpgrade to Pro at https://adspirer.ai to keep building.",
  "is_error": true,
  "tool": "update_ad_headlines",
  "quota": {
    "used": 150,
    "limit": 150,
    "tier": "plus",
    "period_end": "2026-05-01",
    "upgrade_url": "https://adspirer.ai"
  }
}

Try it live

Interactive: Swagger UI

Machine-readable: OpenAPI 3.1 spec · llms-full.txt

More tools: Google Ads · All tools

Adspirer REST API — get an API key at adspirer.ai/keys · adspirer.ai