AdsAgent — Google Ads MCP

mmp_refresh_connection

Refresh one MMP connection metadata on the Meta-owned MMP service. Synchronous write; call only on explicit user request. Returns mmp_not_enabled while MMP is not enabled for the tenant.

Input Schema

Name	Required	Description	Default
`connection_id`	Yes
`connection_context`	No

Output Schema

Name	Required	Description	Default
`ok`	No
`code`	No
`rows`	No
`error`	No
`needs`	No
`reason`	No
`status`	No
`enabled`	No
`provider`	No
`retryable`	No
`truncated`	No
`error_code`	No
`total_rows`	No
`cohort_data`	No
`connections`	No
`next_action`	No
`next_cursor`	No
`support_ref`	No
`connection_id`	No
`oversized_row`	No
`invalid_fields`	No
`rejected_paths`	No
`origin_support_ref`	No
`metadata_by_connection`	No
`cohort_configs_by_connection`	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": {
+    "code": {
+      "type": "string"
+    },
+    "cohort_configs_by_connection": {
+      "additionalProperties": true,
+      "properties": {},
+      "type": "object"
+    },
+    "cohort_data": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {},
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "connection_id": {
+      "type": "string"
+    },
+    "connections": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {},
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "enabled": {
+      "type": "boolean"
+    },
+    "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"
+    },
+    "invalid_fields": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "metadata_by_connection": {
+      "additionalProperties": true,
+      "properties": {},
+      "type": "object"
+    },
+    "needs": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "next_action": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "additionalProperties": true,
+              "properties": {},
+              "type": "object"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "next_cursor": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "ok": {
+      "type": "boolean"
+    },
+    "origin_support_ref": {
+      "type": "string"
+    },
+    "oversized_row": {
+      "type": "boolean"
+    },
+    "provider": {
+      "type": "string"
+    },
+    "reason": {
+      "type": "string"
+    },
+    "rejected_paths": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "retryable": {
+      "type": "boolean"
+    },
+    "rows": {
+      "items": {
+        "additionalProperties": true,
+        "properties": {},
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "status": {
+      "type": "string"
+    },
+    "support_ref": {
+      "type": "string"
+    },
+    "total_rows": {
+      "type": "integer"
+    },
+    "truncated": {
+      "type": "boolean"
+    }
+  },
+  "type": "object"
+}

AddedOct 18, 2026

TDQS

A3.7/5.0

Behavior4/5

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

Annotations already declare readOnlyHint=false / destructiveHint=false / openWorldHint=false; the description adds real value beyond them by labeling the call a synchronous write, imposing an explicit-user-request policy, and disclosing a specific failure mode (mmp_not_enabled when the tenant lacks MMP). It does not say what 'refresh' actually mutates or whether it requires permissions.

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 tight sentences, front-loaded with the action, then the safety policy, then the error condition. No repetition of the tool name or filler content.

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

Completeness3/5

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

Output schema exists so return values needn't be described, and annotations cover the safety profile, but for a mutation tool the description leaves gaps: what metadata is refreshed, what connection_context is for, and whether the caller needs permissions. Adequate, not complete.

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 0% for two parameters, so the description must compensate — and it does not. Neither connection_id nor connection_context (a constrained mctx_v1_<64 hex> token) is explained; 'one MMP connection' only loosely implies connection_id selects the target.

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

Purpose4/5

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

Specific verb + resource + target service: 'Refresh one MMP connection metadata on the Meta-owned MMP service.' An agent can distinguish it from mmp_delete_connection and mmp_get_state by the verb alone, though no sibling is named explicitly. The scope ('one', 'metadata') is clear.

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

Usage Guidelines4/5

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

'Call only on explicit user request' is a concrete gating rule that tells the agent when this mutation is permitted, which is strong guidance for a write tool. It stops short of naming alternatives (e.g., when to use mmp_get_state to inspect instead of refreshing) or preconditions.

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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