SEO GSC Wizard MCP

List Merchant Center accounts

list_gmc_accounts

Read-only

Lists every Google Merchant Center account readable by the connected Google accounts of the authenticated user, and which GSC Wizard sites each account is linked to (via linkedSiteUrls). Use it to discover the Merchant Center account id to link to a property, or to verify the Shopping setup of a site. isAdvanced: true marks a multi-client parent account: reporting runs against a standalone account or one of its sub-accounts, never the parent itself. linkedSiteUrls covers only the sites of the GSC Wizard account this connection is authenticated as (returned as account). incomplete: true means the list is a floor, not the whole set: gaps and unprobedAccountIds say what could not be read or checked for sub-accounts, and errors names each connected Google account whose listing failed; retry for a complete list. An empty result with connected: false carries a reason: "no_scope" means the Merchant Center consent has not been granted in the GSC Wizard app yet (connect Merchant Center at tool.gscwizard.com first); "credentials_revoked" means it was granted but Google now rejects the stored credentials, so the Google account has to be reconnected on the Account page. On a shared property, linkedAccountId is withheld (null, with a note) until the owner enables the Merchant Center opt-in on your invite.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`siteUrl`	No	Optional property URL as returned by list_sites. When given, the response also reports which Merchant Center account is currently linked to that property (`linkedAccountId`).

Output Schema

TableJSON Schema

Name	Required	Description	Default
`gaps`	No
`hint`	No
`note`	No
`count`	No
`error`	No
`errors`	No
`reason`	No
`account`	No
`siteUrl`	No
`accounts`	No
`connected`	No
`incomplete`	No
`incompleteNote`	No
`linkedAccountId`	No
`gcpProjectNumber`	No
`unprobedAccountIds`	No
`registrationRequired`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed18 schema fields changedOct 10, 2026

changedOutput schema / properties / account / $ref

Previous value: -"#/properties/hint"New value: +"#/properties/reason"

changedOutput schema / properties / accounts / items / properties / accountEmail / $ref
```
Previous value: -"#/properties/hint"New value: +"#/properties/reason"
```
changedOutput schema / properties / accounts / items / properties / accountId / $ref
```
Previous value: -"#/properties/hint"New value: +"#/properties/reason"
```
changedOutput schema / properties / accounts / items / properties / accountName / $ref
```
Previous value: -"#/properties/hint"New value: +"#/properties/reason"
```
changedOutput schema / properties / accounts / items / properties / name / $ref
```
Previous value: -"#/properties/hint"New value: +"#/properties/reason"
```

changedOutput schema / properties / error / $ref

Previous value: -"#/properties/hint"New value: +"#/properties/reason"

addedOutput schema / properties / errors

Added value: +{
+  "anyOf": [
+    {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "accountEmail": {
+            "$ref": "#/properties/reason"
+          },
+          "error": {
+            "$ref": "#/properties/reason"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

addedOutput schema / properties / gaps

Added value: +{
+  "$ref": "#/properties/accounts/items/properties/linkedSiteUrls"
+}

changedOutput schema / properties / gcpProjectNumber / $ref

Previous value: -"#/properties/hint"New value: +"#/properties/reason"

addedOutput schema / properties / hint / $ref
```
Added value: +"#/properties/reason"
```
removedOutput schema / properties / hint / type
```
Removed value: -[
-  "string",
-  "null"
-]
```

addedOutput schema / properties / incomplete

Added value: +{
+  "$ref": "#/properties/connected"
+}

addedOutput schema / properties / incompleteNote

Added value: +{
+  "$ref": "#/properties/reason"
+}

changedOutput schema / properties / linkedAccountId / $ref

Previous value: -"#/properties/hint"New value: +"#/properties/reason"

changedOutput schema / properties / note / $ref

Previous value: -"#/properties/hint"New value: +"#/properties/reason"

addedOutput schema / properties / reason

Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}

changedOutput schema / properties / siteUrl / $ref

Previous value: -"#/properties/hint"New value: +"#/properties/reason"

addedOutput schema / properties / unprobedAccountIds

Added value: +{
+  "$ref": "#/properties/accounts/items/properties/linkedSiteUrls"
+}

First observedOct 7, 2026

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