AdsAgent — Google Ads MCP

google_ads_benchmark_sources

Read-only

Read bounded native benchmark_sources 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

C2.7/5.0

Behavior4/5

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

Annotations already cover read-only, non-open-world, and non-destructive behavior. The description usefully adds an access precondition, refusal behavior for restricted services, and a clear 'no writes or access grants' boundary, though it does not document errors beyond refusal.

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?

The description is three compact sentences and front-loads the read action. 'No writes or access grants' is slightly redundant with readOnlyHint, but the overall structure is efficient.

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?

Output schema and annotations reduce the burden, but the description still leaves major gaps for a 3-parameter tool with a required empty body and many adjacent benchmark siblings. It does not explain parameter roles or selection context.

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

Parameters1/5

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

Schema description coverage is only 33%: customer_id has a description, connection_context has only a regex pattern, and body is a required empty object. The description does not mention any parameter or clarify what the required body should contain, so it does not compensate for the gap.

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?

The description states a read action on the named benchmark_sources resource and adds 'bounded native,' but it does not explain what benchmark sources are or distinguish this tool from sibling tools like benchmark_dates, benchmark_locations, benchmark_metrics, and benchmark_products.

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?

It gives no guidance on when to use this tool versus the other benchmark tools. The sentence about restricted services requiring fresh server-verified access is a prerequisite/refusal condition, not routing guidance.

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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