AdsAgent — Google Ads MCP

google_ads_asset_group_update_prepare

Prepare to replace a Performance Max asset group's status or final URLs. Saves a private draft after Google validate-only and a complete affected-resource snapshot; does not send the change. The confirmation tool is google_ads_asset_group_update_confirm; execution requires the user’s agreement in the conversation.

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
`draft`	No
`error`	No
`items`	No
`needs`	No
`state`	No
`reason`	No
`status`	No
`changes`	No
`receipt`	No
`summary`	No
`platform`	No
`receipts`	No
`retry_at`	No
`retryable`	No
`error_code`	No
`expires_at`	No
`idempotent`	No
`validation`	No
`approved_at`	No
`next_action`	No
`plan_digest`	No
`support_ref`	No
`approval_ref`	No
`confirm_tool`	No
`presentation`	No
`invalid_fields`	No
`rejected_paths`	No
`expected_changes`	No
`origin_support_ref`	No
`instruction_template_id`	No
`google_change_resource_name`	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": {
+    "approval_ref": {
+      "type": "string"
+    },
+    "approved_at": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "changes": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {},
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "code": {
+      "type": "string"
+    },
+    "confirm_tool": {
+      "type": "string"
+    },
+    "draft": {
+      "anyOf": [
+        {
+          "additionalProperties": true,
+          "properties": {
+            "action_type": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "asset_kind": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "byte_size": {
+              "anyOf": [
+                {
+                  "type": "integer"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "content_type": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "created_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "entity_id": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "entity_level": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "expires_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "filename": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "id": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "sha256": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "status": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            }
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "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"
+    },
+    "expected_changes": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {},
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "expires_at": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "google_change_resource_name": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "idempotent": {
+      "type": "boolean"
+    },
+    "instruction_template_id": {
+      "type": "string"
+    },
+    "invalid_fields": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "items": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {
+          "index": {
+            "type": "integer"
+          },
+          "operation": {
+            "type": "string"
+          },
+          "receipt": {
+            "additionalProperties": true,
+            "properties": {},
+            "type": "object"
+          },
+          "state": {
+            "type": "string"
+          },
+          "summary": {
+            "additionalProperties": true,
+            "properties": {},
+            "type": "object"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "needs": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "next_action": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "additionalProperties": true,
+              "properties": {},
+              "type": "object"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "ok": {
+      "type": "boolean"
+    },
+    "origin_support_ref": {
+      "type": "string"
+    },
+    "plan_digest": {
+      "type": "string"
+    },
+    "platform": {
+      "type": "string"
+    },
+    "presentation": {
+      "type": "string"
+    },
+    "reason": {
+      "type": "string"
+    },
+    "receipt": {
+      "anyOf": [
+        {
+          "additionalProperties": true,
+          "properties": {
+            "acknowledged_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "action_type": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "claimed_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "draft_id": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "entity_id": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "entity_level": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "expires_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "finished_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "operation_ref": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "operation_state": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "operator_review_required": {
+              "type": "boolean"
+            },
+            "outcome_category": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "resource_name": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "sent_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "status": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "summary": {
+              "additionalProperties": true,
+              "properties": {},
+              "type": "object"
+            }
+          },
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "receipts": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {},
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "rejected_paths": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "retry_at": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "retryable": {
+      "type": "boolean"
+    },
+    "state": {
+      "type": "string"
+    },
+    "status": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "integer"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "summary": {
+      "additionalProperties": true,
+      "properties": {},
+      "type": "object"
+    },
+    "support_ref": {
+      "type": "string"
+    },
+    "validation": {
+      "additionalProperties": true,
+      "properties": {},
+      "type": "object"
+    }
+  },
+  "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 12, 2026

TDQS

A4.7/5.0

Behavior5/5

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

The annotations establish readOnlyHint=false and destructiveHint=false, and the description adds meaningful context: it saves a private draft after Google validate-only and a complete affected-resource snapshot, and it does not send the change. This is exactly the extra behavioral detail an agent needs for a prepare/confirm workflow.

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

Conciseness5/5

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

Three sentences, front-loaded with the action and followed by the non-execution guarantee and confirmation requirements. Every sentence adds useful information without repetition.

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?

The description fully covers the prepare semantics, validation/snapshot behavior, and confirmation workflow. Because an output schema exists, it need not explain return values, and the remaining schema-level details are available in the input schema.

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 description coverage is only 33%, with customer_id documented but connection_context and most nested body fields undocumented. The description adds some meaning by naming the target asset group and the mutable fields status and final URLs, but it does not explain connection_context, the 1–10 final_urls constraint, or other parameter details.

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?

The description states a specific verb and resource: prepare to replace a Performance Max asset group's status or final URLs. It clearly distinguishes this prepare step from the sibling confirmation tool google_ads_asset_group_update_confirm.

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?

It explicitly says this tool does not send the change, names the confirmation tool to use next, and states that execution requires the user's agreement in the conversation. This gives an agent clear when-to-use and sequencing guidance against the confirm sibling.

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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