xfix

Check product page price and schema

check_product_page

Read-only

Fetches one public product page without running JavaScript and reports whether the price and stock are in the HTML and which of six product structured data fields are present: price, availability, brand, identifier (gtin or sku), shipping details and aggregate rating. Use when the user gives a product page URL.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`product_url`	Yes	The full address of one public product page.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`url`	Yes
`tool`	Yes
`cached`	Yes
`limits`	Yes
`status`	Yes
`verdict`	Yes
`findings`	Yes
`checked_at`	Yes
`report_url`	Yes
`price_and_stock_in_html`	No
`product_structured_data`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed5 schema fields changedOct 20, 2026

addedOutput schema / properties / price_and_stock_in_html / properties / platform
```
Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}
```

changedOutput schema / properties / price_and_stock_in_html / required

Previous value: -[
-  "verdict",
-  "headline",
-  "page_checked",
-  "fields",
-  "note",
-  "report_url"
-]New value: +[
+  "verdict",
+  "headline",
+  "page_checked",
+  "platform",
+  "fields",
+  "note",
+  "report_url"
+]

addedOutput schema / properties / product_structured_data / properties / found_outside_product_offer
```
Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}
```
addedOutput schema / properties / product_structured_data / properties / platform
```
Added value: +{
+  "type": [
+    "string",
+    "null"
+  ]
+}
```

changedOutput schema / properties / product_structured_data / required

Previous value: -[
-  "verdict",
-  "headline",
-  "page_checked",
-  "fields",
-  "missing_fields",
-  "note",
-  "json_ld",
-  "report_url"
-]New value: +[
+  "verdict",
+  "headline",
+  "page_checked",
+  "platform",
+  "fields",
+  "missing_fields",
+  "found_outside_product_offer",
+  "note",
+  "json_ld",
+  "report_url"
+]

Changed4 schema fields changedOct 20, 2026

removedOutput schema / properties / price_and_stock

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "fields": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "field": {
-            "type": "string"
-          },
-          "present": {
-            "type": "boolean"
-          }
-        },
-        "required": [
-          "field",
-          "present"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "fix_by_platform": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "fix": {
-            "type": "string"
-          },
-          "platform": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "platform",
-          "fix"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "headline": {
-      "type": "string"
-    },
-    "note": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "page_checked": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "report_url": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "verdict": {
-      "type": "string"
-    }
-  },
-  "required": [
-    "verdict",
-    "headline",
-    "page_checked",
-    "fields",
-    "note",
-    "report_url"
-  ],
-  "type": "object"
-}

addedOutput schema / properties / price_and_stock_in_html

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "fields": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "field": {
+            "type": "string"
+          },
+          "present": {
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "field",
+          "present"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "fix_by_platform": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "fix": {
+            "type": "string"
+          },
+          "platform": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "platform",
+          "fix"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "headline": {
+      "type": "string"
+    },
+    "note": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "page_checked": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "report_url": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "verdict": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "verdict",
+    "headline",
+    "page_checked",
+    "fields",
+    "note",
+    "report_url"
+  ],
+  "type": "object"
+}

removedOutput schema / properties / product_schema

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "fields": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "field": {
-            "type": "string"
-          },
-          "label": {
-            "type": "string"
-          },
-          "present": {
-            "type": "boolean"
-          },
-          "status": {
-            "enum": [
-              "present",
-              "missing"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "field",
-          "label",
-          "present",
-          "status"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "fix_by_platform": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "fix": {
-            "type": "string"
-          },
-          "platform": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "platform",
-          "fix"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "headline": {
-      "type": "string"
-    },
-    "json_ld": {
-      "anyOf": [
-        {
-          "additionalProperties": false,
-          "properties": {
-            "label": {
-              "const": "quoted page text",
-              "type": "string"
-            },
-            "text": {
-              "maxLength": 200,
-              "type": "string"
-            }
-          },
-          "required": [
-            "label",
-            "text"
-          ],
-          "type": "object"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "missing_fields": {
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "note": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "page_checked": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "report_url": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "verdict": {
-      "type": "string"
-    }
-  },
-  "required": [
-    "verdict",
-    "headline",
-    "page_checked",
-    "fields",
-    "missing_fields",
-    "note",
-    "json_ld",
-    "report_url"
-  ],
-  "type": "object"
-}

addedOutput schema / properties / product_structured_data

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "fields": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "field": {
+            "type": "string"
+          },
+          "label": {
+            "type": "string"
+          },
+          "present": {
+            "type": "boolean"
+          },
+          "status": {
+            "enum": [
+              "present",
+              "missing"
+            ],
+            "type": "string"
+          }
+        },
+        "required": [
+          "field",
+          "label",
+          "present",
+          "status"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "fix_by_platform": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "fix": {
+            "type": "string"
+          },
+          "platform": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "platform",
+          "fix"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "headline": {
+      "type": "string"
+    },
+    "json_ld": {
+      "anyOf": [
+        {
+          "additionalProperties": false,
+          "properties": {
+            "label": {
+              "const": "quoted page text",
+              "type": "string"
+            },
+            "text": {
+              "maxLength": 200,
+              "type": "string"
+            }
+          },
+          "required": [
+            "label",
+            "text"
+          ],
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "missing_fields": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "note": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "page_checked": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "report_url": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "verdict": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "verdict",
+    "headline",
+    "page_checked",
+    "fields",
+    "missing_fields",
+    "note",
+    "json_ld",
+    "report_url"
+  ],
+  "type": "object"
+}

First observedOct 19, 2026

TDQS

A4/5.0

Behavior4/5

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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description still adds meaningful context beyond them: it runs without JavaScript (so JS-rendered prices may be missed) and enumerates the six checks, which sets expectations about output coverage.

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?

Two tight sentences, front-loaded with the action and its scope, with no redundant or filler text. The when-to-use cue is placed at the end without padding.

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-value details need not be repeated. Combined with the no-JS disclosure and the field list, an agent has enough to call it correctly; only the lack of sibling routing guidance leaves a minor gap.

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 100% and there is a single required parameter fully documented in the schema. The description reinforces 'one public product page' but adds no syntax or format detail beyond the schema, so baseline 3 is appropriate.

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 and resource ('Fetches one public product page') and enumerates exactly what it reports (price/stock presence plus six structured-data fields). It is clear and scoped, but it never distinguishes itself from siblings like check_page_readability or check_page_visibility, so an agent must infer the boundary.

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?

'Use when the user gives a product page URL' gives a clear triggering condition. However, it offers no when-not-to-use guidance and does not name an alternative sibling for adjacent cases (e.g., general readability or AI-crawler checks).

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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