AdsAgent — Google Ads MCP

mmp_get_state

Read-only

Read MMP connections, synced apps, event mappings, and cohort configs for the current user from the Meta-owned MMP service. Metadata rows are paged at up to 1000 rows and 256KiB per page (a single oversized row is returned whole with oversized_row=true); connections and cohort configs are returned whole. When truncated=true pass next_cursor back as cursor. Returns mmp_not_enabled while MMP is not enabled for the tenant. No writes.

Input Schema

Name	Required	Description	Default
`cursor`	No
`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

A3.9/5.0

Behavior5/5

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

Annotations already declare readOnlyHint/destructiveHint=false, yet the description goes well beyond them: page sizes (1000 rows / 256KiB), oversized_row=true behavior, that connections and cohort configs are returned whole, the truncated+next_cursor contract, and the mmp_not_enabled error condition. This is rich disclosure of behavior beyond structured fields.

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 purpose before paging mechanics, and nearly every clause carries operational information. 'No writes' is mildly redundant with readOnlyHint=true, keeping it just short of a 5.

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

Completeness4/5

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

An output schema exists, so return values needn't be spelled out, and the description still adds useful paging/truncation context. The remaining gap is the opaque connection_context input, whose meaning an agent cannot derive from either field.

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 0%, so the description must compensate. It explains the cursor parameter well ('when truncated=true pass next_cursor back as cursor'), but connection_context is left completely undocumented in both schema and description, leaving half the parameters unexplained.

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?

States a specific verb (Read) and enumerates the exact resources returned (connections, synced apps, event mappings, cohort configs) plus the scope (current user, Meta-owned MMP service). It does not explicitly route away from overlapping siblings like mmp_fetch_cohorts, so it falls short of a 5.

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

Usage Guidelines3/5

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

Usage context is only implied by 'for the current user' and 'No writes' — the agent can infer this is the state-read tool but there is no explicit when-to-use or when-to-prefer-an-alternative guidance. The cursor/truncation instructions are operational, not use-case selection.

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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