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google_ads_ad_performance_compare

Compare ad performance in one Google Ads ad group to rank enabled ads and assign WINNER, LOSER, or INSUFFICIENT_DATA verdicts, returning a recommendation and insights.

Instructions

Rank ENABLED ads within a single Google Ads ad group and assign WINNER / LOSER / INSUFFICIENT_DATA verdicts. Returns {ad_group_id, period, ads:[{ad_id, impressions, clicks, conversions, cost, ctr, cvr, cpa, score (ctr*cvr, or ctr when conversions=0), rank, verdict, headlines?, descriptions?}], winner, recommendation, insights:[strings]}. Ads with impressions < 100 are flagged INSUFFICIENT_DATA; all ads tied at the top score receive WINNER, the rest LOSER. Read-only — does not pause or rotate ads. For cross-ad-group per-ad reporting use google_ads_ad_performance_report; for RSA asset-level splits use google_ads_rsa_assets_analyze.

Input Schema

NameRequiredDescriptionDefault
periodNoReporting window for the metrics. Default 'LAST_30_DAYS'. Use a shorter window (LAST_7_DAYS / LAST_14_DAYS) when diagnosing recent changes; use LAST_90_DAYS for trend baselines. Also accepts an explicit range — "YYYY-MM-DD..YYYY-MM-DD" (the spelling Meta Ads takes too) or, in GAQL spelling, "BETWEEN 'YYYY-MM-DD' AND 'YYYY-MM-DD'" — both endpoints inclusive, in the account's time zone, for a window no trailing constant can reach (e.g. a single past calendar month). One asymmetry to know about: every constant except LAST_90_DAYS is resolved by Google Ads in the account's reporting time zone, whereas LAST_90_DAYS has no API constant and is expanded by mureo into the 90 days ending yesterday **on the server's date**, so its edges can differ by a day when the server and the account are in different zones. Pass an explicit range when the exact boundary matters.
ad_group_idYesAd group ID as a numeric string (e.g. '145680123456'). Required — comparison is always scoped to one ad group so the ads share targeting. Obtain via google_ads_ad_groups_list.
customer_idNoGoogle Ads customer ID as a 10-digit string without dashes (e.g. '1234567890'). Optional — falls back to GOOGLE_ADS_CUSTOMER_ID / GOOGLE_ADS_LOGIN_CUSTOMER_ID from the configured credentials when omitted.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv0.33.0
    • changedInput schema / properties / period / anyOf
      Previous value: -[
      -  {
      -    "enum": [
      -      "TODAY",
      -      "YESTERDAY",
      -      "THIS_WEEK_SUN_TODAY",
      -      "THIS_WEEK_MON_TODAY",
      -      "LAST_BUSINESS_WEEK",
      -      "LAST_WEEK_SUN_SAT",
      -      "LAST_WEEK_MON_SUN",
      -      "LAST_7_DAYS",
      -      "LAST_14_DAYS",
      -      "LAST_30_DAYS",
      -      "LAST_90_DAYS",
      -      "THIS_MONTH",
      -      "LAST_MONTH"
      -    ],
      -    "type": "string"
      -  },
      -  {
      -    "pattern": "\\ABETWEEN '([0-9]{4}-[0-9]{2}-[0-9]{2})' AND '([0-9]{4}-[0-9]{2}-[0-9]{2})'\\Z",
      -    "type": "string"
      -  }
      -]New value: +[
      +  {
      +    "enum": [
      +      "TODAY",
      +      "YESTERDAY",
      +      "THIS_WEEK_SUN_TODAY",
      +      "THIS_WEEK_MON_TODAY",
      +      "LAST_BUSINESS_WEEK",
      +      "LAST_WEEK_SUN_SAT",
      +      "LAST_WEEK_MON_SUN",
      +      "LAST_7_DAYS",
      +      "LAST_14_DAYS",
      +      "LAST_30_DAYS",
      +      "LAST_90_DAYS",
      +      "THIS_MONTH",
      +      "LAST_MONTH"
      +    ],
      +    "type": "string"
      +  },
      +  {
      +    "pattern": "\\ABETWEEN '([0-9]{4}-[0-9]{2}-[0-9]{2})' AND '([0-9]{4}-[0-9]{2}-[0-9]{2})'\\Z",
      +    "type": "string"
      +  },
      +  {
      +    "pattern": "\\A([0-9]{4}-[0-9]{2}-[0-9]{2})\\.\\.([0-9]{4}-[0-9]{2}-[0-9]{2})\\Z",
      +    "type": "string"
      +  }
      +]
    • changedInput schema / properties / period / description
      Previous value: -"Reporting window for the metrics. Default 'LAST_30_DAYS'. Use a shorter window (LAST_7_DAYS / LAST_14_DAYS) when diagnosing recent changes; use LAST_90_DAYS for trend baselines. Also accepts an explicit range in GAQL spelling — \"BETWEEN 'YYYY-MM-DD' AND 'YYYY-MM-DD'\", both endpoints inclusive, in the account's time zone — for a window no trailing constant can reach (e.g. a single past calendar month). One asymmetry to know about: every constant except LAST_90_DAYS is resolved by Google Ads in the account's reporting time zone, whereas LAST_90_DAYS has no API constant and is expanded by mureo into the 90 days ending yesterday **on the server's date**, so its edges can differ by a day when the server and the account are in different zones. Pass an explicit range when the exact boundary matters."New value: +"Reporting window for the metrics. Default 'LAST_30_DAYS'. Use a shorter window (LAST_7_DAYS / LAST_14_DAYS) when diagnosing recent changes; use LAST_90_DAYS for trend baselines. Also accepts an explicit range — \"YYYY-MM-DD..YYYY-MM-DD\" (the spelling Meta Ads takes too) or, in GAQL spelling, \"BETWEEN 'YYYY-MM-DD' AND 'YYYY-MM-DD'\" — both endpoints inclusive, in the account's time zone, for a window no trailing constant can reach (e.g. a single past calendar month). One asymmetry to know about: every constant except LAST_90_DAYS is resolved by Google Ads in the account's reporting time zone, whereas LAST_90_DAYS has no API constant and is expanded by mureo into the 90 days ending yesterday **on the server's date**, so its edges can differ by a day when the server and the account are in different zones. Pass an explicit range when the exact boundary matters."
  2. Changed3 schema fields changedv0.17.1
    • addedInput schema / properties / period / anyOf
      Added value: +[
      +  {
      +    "enum": [
      +      "TODAY",
      +      "YESTERDAY",
      +      "THIS_WEEK_SUN_TODAY",
      +      "THIS_WEEK_MON_TODAY",
      +      "LAST_BUSINESS_WEEK",
      +      "LAST_WEEK_SUN_SAT",
      +      "LAST_WEEK_MON_SUN",
      +      "LAST_7_DAYS",
      +      "LAST_14_DAYS",
      +      "LAST_30_DAYS",
      +      "LAST_90_DAYS",
      +      "THIS_MONTH",
      +      "LAST_MONTH"
      +    ],
      +    "type": "string"
      +  },
      +  {
      +    "pattern": "\\ABETWEEN '([0-9]{4}-[0-9]{2}-[0-9]{2})' AND '([0-9]{4}-[0-9]{2}-[0-9]{2})'\\Z",
      +    "type": "string"
      +  }
      +]
    • changedInput schema / properties / period / description
      Previous value: -"Reporting window for the metrics. Default 'LAST_30_DAYS'. Use a shorter window (LAST_7_DAYS / LAST_14_DAYS) when diagnosing recent changes; use LAST_90_DAYS for trend baselines."New value: +"Reporting window for the metrics. Default 'LAST_30_DAYS'. Use a shorter window (LAST_7_DAYS / LAST_14_DAYS) when diagnosing recent changes; use LAST_90_DAYS for trend baselines. Also accepts an explicit range in GAQL spelling — \"BETWEEN 'YYYY-MM-DD' AND 'YYYY-MM-DD'\", both endpoints inclusive, in the account's time zone — for a window no trailing constant can reach (e.g. a single past calendar month). One asymmetry to know about: every constant except LAST_90_DAYS is resolved by Google Ads in the account's reporting time zone, whereas LAST_90_DAYS has no API constant and is expanded by mureo into the 90 days ending yesterday **on the server's date**, so its edges can differ by a day when the server and the account are in different zones. Pass an explicit range when the exact boundary matters."
    • removedInput schema / properties / period / enum
      Removed value: -[
      -  "TODAY",
      -  "YESTERDAY",
      -  "LAST_7_DAYS",
      -  "LAST_14_DAYS",
      -  "LAST_30_DAYS",
      -  "LAST_90_DAYS",
      -  "THIS_MONTH",
      -  "LAST_MONTH"
      -]
  3. Changed1 schema field changedv0.10.37
    • addedInput schema / additionalProperties
      Added value: +false
  4. Addedv0.9.12
  5. Removedv0.9.6
  6. Addedv0.9.2
  7. Removedv0.9.1
  8. Addedv0.6.0
  9. Removedv0.3.2
  10. Addedv1.0.5

TDQS

A4.6/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden and does it: declares read-only semantics ('does not pause or rotate ads'), explains the scoring formula (ctr*cvr, ctr when conversions=0), the INSUFFICIENT_DATA threshold, and the tie rule where all top-scoring ads win. That is unusually complete disclosure for a mutation-adjacent analysis tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the verb and verdict behavior before the return shape. The inline return schema is dense, but since no output schema exists it earns its space; only minor trimming is possible.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema exists, so the description supplies the full return contract (fields, winner, recommendation, insights) plus edge-case semantics. An agent can invoke and interpret the result without further documentation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so ad_group_id, customer_id fallback, and the period anyOf/patterns are already documented in the schema. The description only reinforces the single-ad-group scoping constraint and adds no period syntax or format detail beyond it, so baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource — 'Rank ENABLED ads within a single Google Ads ad group' — and defines the output verdicts. It distinguishes itself from siblings by naming google_ads_ad_performance_report and google_ads_rsa_assets_analyze with their different scopes.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly routes the agent: cross-ad-group per-ad reporting goes to google_ads_ad_performance_report, RSA asset splits to google_ads_rsa_assets_analyze. It also sets the inclusion criteria (ENABLED only, impressions >= 100) so the agent knows when results are meaningful.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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