AdsAgent — Google Ads MCP

google_ads_keyword_themes

Read-only

Read bounded native keyword_themes insight. Restricted services require fresh server-verified access and otherwise refuse. No writes or access grants.

Input Schema

Name	Required	Description
`body`	Yes
`customer_id`	Yes	10-digit Google Ads customer id.
`connection_context`	No

Output Schema

Name	Required	Description	Default
`ok`	No
`code`	No
`data`	No
`kind`	No
`error`	No
`needs`	No
`reason`	No
`source`	No
`retryable`	No
`error_code`	No
`request_id`	No
`api_version`	No
`next_action`	No
`observed_at`	No
`support_ref`	No
`availability`	No
`invalid_fields`	No
`rejected_paths`	No
`truncated_fields`	No
`origin_support_ref`	No
`forecast_not_guarantee`	No
`smart_campaign_create_supported`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 28, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "api_version": {
+      "type": "string"
+    },
+    "availability": {
+      "type": "string"
+    },
+    "code": {
+      "type": "string"
+    },
+    "data": {
+      "additionalProperties": true,
+      "properties": {},
+      "type": "object"
+    },
+    "error": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "additionalProperties": true,
+              "properties": {
+                "code": {
+                  "type": "string"
+                },
+                "details": {
+                  "additionalProperties": true,
+                  "properties": {},
+                  "type": "object"
+                },
+                "message": {
+                  "type": "string"
+                },
+                "retryable": {
+                  "type": "boolean"
+                },
+                "support_ref": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "error_code": {
+      "type": "string"
+    },
+    "forecast_not_guarantee": {
+      "type": "boolean"
+    },
+    "invalid_fields": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "kind": {
+      "type": "string"
+    },
+    "needs": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "next_action": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "additionalProperties": true,
+              "properties": {},
+              "type": "object"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "observed_at": {
+      "type": "string"
+    },
+    "ok": {
+      "type": "boolean"
+    },
+    "origin_support_ref": {
+      "type": "string"
+    },
+    "reason": {
+      "type": "string"
+    },
+    "rejected_paths": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "request_id": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "retryable": {
+      "type": "boolean"
+    },
+    "smart_campaign_create_supported": {
+      "anyOf": [
+        {
+          "type": "boolean"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "source": {
+      "type": "string"
+    },
+    "support_ref": {
+      "type": "string"
+    },
+    "truncated_fields": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedOct 13, 2026
- addedInput schema / properties / connection_context
```
Added value: +{
+  "pattern": "^mctx_v1_[0-9a-f]{64}$",
+  "type": "string"
+}
```
AddedOct 4, 2026

TDQS

C2.9/5.0

Behavior4/5

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

Adds behavior beyond the annotations: it discloses that restricted services will refuse without fresh server-verified access, and reiterates the non-writing scope, which is useful for an agent predicting failure modes. It still leaves "bounded" unexplained (limits, quotas, result caps), so it is not fully transparent.

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?

Three short, front-loaded sentences with no filler. The terseness borders on cryptic ("bounded native"), but nothing is wasted.

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

Completeness2/5

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

For a tool with a required nested body object and three undocumented parameters, the description explains neither the required inputs nor what a "keyword theme" result contains, and an output schema does not excuse the missing input semantics. An agent could not confidently construct the body from this description alone.

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

Parameters2/5

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

Schema description coverage is only 33% (only customer_id is documented), and the description offers no help for the nested body fields final_url, language_code, or geo_target_ids. With the schema failing to compensate, the description needed to explain these inputs and does not.

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

Purpose3/5

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

States a specific verb and resource ("Read ... keyword_themes insight"), but "bounded native" is internal jargon that does not clarify what the tool actually returns. It gives no signal distinguishing it from near siblings such as google_ads_keyword_ideas_generate or google_ads_keyword_forecast_metrics.

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

Usage Guidelines2/5

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

The only guidance is a precondition ("Restricted services require fresh server-verified access and otherwise refuse"). There is no statement of when to choose this over keyword ideas, forecasts, or historical metrics, nor any exclusion criteria.

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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