mcp-gateway

get_merchant_profile

Read-onlyIdempotent

Get the complete profile — trust score, policies, compliance, and protocol support — of the merchant this MCP endpoint belongs to. Takes NO parameters: the merchant is fixed by which store's /:storeSlug/mcp endpoint you connected to, not by an argument. To read a different merchant's profile, call this same tool on that merchant's own endpoint instead.

Input Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Output Schema

TableJSON Schema

Name	Required	Description	Default
`store`	Yes
`trust`	Yes
`identity`	Yes
`policies`	Yes
`discovery`	Yes
`protocols`	Yes
`acpFeedUrl`	Yes
`compliance`	Yes
`manifest_jws`	Yes
`manifest_hash`	Yes
`protocolScopeNote`	Yes
`agentPolicySummary`	Yes
`manifest_signed_at`	Yes
`supportedProtocols`	Yes
`identityProviderType`	Yes
`enrichedCatalogEnabled`	Yes
`identityLinkingEnabled`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed27 schema fields changedSep 17, 2026
- addedInput schema / additionalProperties
```
Added value: +true
```
- changedOutput schema / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / agentPolicySummary / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / agentPolicySummary / properties / allowedShippingCountries / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / agentPolicySummary / properties / maxCartValue / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / agentPolicySummary / properties / maxUnitsPerLine / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / compliance / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / discovery / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / identity / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / identity / properties / address / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / identity / properties / contact / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / policies / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / policies / properties / payment / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / policies / properties / payment / properties / withheldMethods / items / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / policies / properties / returns / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / policies / properties / shipping / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / policies / properties / warranty / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / protocols / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / protocols / properties / acp / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / protocols / properties / ap2 / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / protocols / properties / ucp / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / protocols / properties / vic / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / protocols / properties / x402 / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / store / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / supportedProtocols / items / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / trust / additionalProperties
```
Previous value: -falseNew value: +true
```
- changedOutput schema / properties / trust / properties / legacyV2Components / additionalProperties
```
Previous value: -falseNew value: +true
```

Changed2 schema fields changedSep 12, 2026

addedOutput schema / properties / agentPolicySummary / properties / maxUnitsPerLine

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "derivedFrom": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "units": {
+      "type": "integer"
+    }
+  },
+  "required": [
+    "units",
+    "derivedFrom"
+  ],
+  "type": "object"
+}

changedOutput schema / properties / agentPolicySummary / properties / source / enum

Previous value: -[
-  "merchant_rules",
-  "not_configured",
-  "lookup_failed"
-]New value: +[
+  "merchant_rules",
+  "platform_ceiling",
+  "not_configured",
+  "lookup_failed"
+]

Changed13 schema fields changedSep 11, 2026

addedOutput schema / properties / agentPolicySummary / properties / allowedShippingCountries / additionalProperties
```
Added value: +false
```
removedOutput schema / properties / agentPolicySummary / properties / allowedShippingCountries / items
```
Removed value: -{
-  "type": "string"
-}
```

addedOutput schema / properties / agentPolicySummary / properties / allowedShippingCountries / properties

Added value: +{
+  "countries": {
+    "items": {
+      "type": "string"
+    },
+    "type": "array"
+  },
+  "derivedFrom": {
+    "items": {
+      "type": "string"
+    },
+    "type": "array"
+  }
+}

addedOutput schema / properties / agentPolicySummary / properties / allowedShippingCountries / required
```
Added value: +[
+  "countries",
+  "derivedFrom"
+]
```
changedOutput schema / properties / agentPolicySummary / properties / allowedShippingCountries / type
```
Previous value: -"array"New value: +"object"
```

removedOutput schema / properties / agentPolicySummary / properties / alwaysConfirm

Removed value: -{
-  "items": {
-    "type": "string"
-  },
-  "type": "array"
-}

removedOutput schema / properties / agentPolicySummary / properties / confirmationRequiredAboveUsd
```
Removed value: -{
-  "type": "number"
-}
```
addedOutput schema / properties / agentPolicySummary / properties / confirmationRequiredAtOrAbove
```
Added value: +{
+  "$ref": "#/properties/agentPolicySummary/properties/maxCartValue"
+}
```

addedOutput schema / properties / agentPolicySummary / properties / maxCartValue

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "amountCents": {
+      "type": "number"
+    },
+    "derivedFrom": {
+      "items": {
+        "type": "string"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "amountCents",
+    "derivedFrom"
+  ],
+  "type": "object"
+}

removedOutput schema / properties / agentPolicySummary / properties / maxCartValueUsd
```
Removed value: -{
-  "type": "number"
-}
```

removedOutput schema / properties / agentPolicySummary / properties / neverConfirm

Removed value: -{
-  "items": {
-    "type": "string"
-  },
-  "type": "array"
-}

addedOutput schema / properties / agentPolicySummary / properties / source

Added value: +{
+  "enum": [
+    "merchant_rules",
+    "not_configured",
+    "lookup_failed"
+  ],
+  "type": "string"
+}

changedOutput schema / properties / agentPolicySummary / required

Previous value: -[
-  "maxCartValueUsd",
-  "confirmationRequiredAboveUsd",
-  "allowedShippingCountries",
-  "alwaysConfirm",
-  "neverConfirm"
-]New value: +[
+  "source"
+]

Changed1 schema field changedSep 10, 2026

changedOutput schema / properties / policies / properties / shipping / description

Previous value: -"Merchant-declared shipping policy. Absent = not declared. An absent freeThresholdCents is NOT 'free shipping on everything'."New value: +"Merchant-declared shipping policy for the merchant's OWN checkout. Absent = not declared. An absent freeThresholdCents is NOT 'free shipping on everything', and a declared one is NOT applied by get_shipping_rates: those rates are flat estimates that ignore the cart subtotal. Delivery days here may differ from the estimates too."

Changed16 schema fields changedSep 10, 2026

addedOutput schema / properties / compliance / properties / dataRetentionDays / description

Added value: +"Retention window as declared by the merchant. Absent = not declared; absence is NOT 'data is deleted immediately'."

addedOutput schema / properties / compliance / properties / gdprContactEmail
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / compliance / properties / pciDssLevel / description

Added value: +"PCI DSS merchant level as declared by the merchant (1-4). Absent = not declared."

removedOutput schema / properties / compliance / required

Removed value: -[
-  "gdprDataController",
-  "pciDssLevel",
-  "encryptionAtRest",
-  "encryptionInTransit",
-  "dataRetentionDays"
-]

removedOutput schema / properties / identity / properties / address / required

Removed value: -[
-  "street",
-  "city",
-  "state",
-  "country",
-  "postalCode"
-]

removedOutput schema / properties / identity / properties / contact / required
```
Removed value: -[
-  "email",
-  "phone",
-  "chat"
-]
```

removedOutput schema / properties / identity / required

Removed value: -[
-  "legalName",
-  "taxId",
-  "address",
-  "contact"
-]

addedOutput schema / properties / policies / properties / payment / description

Added value: +"Merchant-declared payment policy. Absent = not declared; ask at checkout."

removedOutput schema / properties / policies / properties / payment / required
```
Removed value: -[
-  "acceptedMethods",
-  "securityStandard"
-]
```

addedOutput schema / properties / policies / properties / returns / description

Added value: +"Merchant-declared return policy. Absent = not declared; absence is NEVER zero."

removedOutput schema / properties / policies / properties / returns / required

Removed value: -[
-  "windowDays",
-  "freeReturnShipping",
-  "refundMethod",
-  "refundProcessingDays"
-]

addedOutput schema / properties / policies / properties / shipping / description

Added value: +"Merchant-declared shipping policy. Absent = not declared. An absent freeThresholdCents is NOT 'free shipping on everything'."

removedOutput schema / properties / policies / properties / shipping / required

Removed value: -[
-  "freeThresholdCents",
-  "standardDeliveryDays",
-  "expressPrice",
-  "overnightPrice"
-]

addedOutput schema / properties / policies / properties / warranty / description

Added value: +"Merchant-declared warranty. Absent = not declared, NOT 'no warranty'."

removedOutput schema / properties / policies / properties / warranty / required
```
Removed value: -[
-  "periodYears",
-  "covered"
-]
```

removedOutput schema / properties / policies / required

Removed value: -[
-  "returns",
-  "shipping",
-  "warranty",
-  "payment"
-]

Changed1 schema field changedSep 8, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": false,
+  "properties": {
+    "acpFeedUrl": {
+      "type": "string"
+    },
+    "agentPolicySummary": {
+      "additionalProperties": false,
+      "properties": {
+        "allowedShippingCountries": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "alwaysConfirm": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "confirmationRequiredAboveUsd": {
+          "type": "number"
+        },
+        "maxCartValueUsd": {
+          "type": "number"
+        },
+        "neverConfirm": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "maxCartValueUsd",
+        "confirmationRequiredAboveUsd",
+        "allowedShippingCountries",
+        "alwaysConfirm",
+        "neverConfirm"
+      ],
+      "type": "object"
+    },
+    "compliance": {
+      "additionalProperties": false,
+      "properties": {
+        "dataRetentionDays": {
+          "type": "number"
+        },
+        "encryptionAtRest": {
+          "type": "string"
+        },
+        "encryptionInTransit": {
+          "type": "string"
+        },
+        "gdprDataController": {
+          "type": "string"
+        },
+        "pciDssLevel": {
+          "type": "number"
+        }
+      },
+      "required": [
+        "gdprDataController",
+        "pciDssLevel",
+        "encryptionAtRest",
+        "encryptionInTransit",
+        "dataRetentionDays"
+      ],
+      "type": "object"
+    },
+    "discovery": {
+      "additionalProperties": false,
+      "properties": {
+        "agUiEndpoint": {
+          "type": "string"
+        },
+        "agentCard": {
+          "type": "string"
+        },
+        "agentPolicy": {
+          "type": "string"
+        },
+        "llmsTxt": {
+          "type": "string"
+        },
+        "mcpEndpoint": {
+          "type": "string"
+        },
+        "ucpProfile": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "mcpEndpoint",
+        "agUiEndpoint",
+        "agentCard",
+        "agentPolicy",
+        "ucpProfile",
+        "llmsTxt"
+      ],
+      "type": "object"
+    },
+    "enrichedCatalogEnabled": {
+      "type": "boolean"
+    },
+    "identity": {
+      "additionalProperties": false,
+      "properties": {
+        "address": {
+          "additionalProperties": false,
+          "properties": {
+            "city": {
+              "type": "string"
+            },
+            "country": {
+              "type": "string"
+            },
+            "postalCode": {
+              "type": "string"
+            },
+            "state": {
+              "type": "string"
+            },
+            "street": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "street",
+            "city",
+            "state",
+            "country",
+            "postalCode"
+          ],
+          "type": "object"
+        },
+        "contact": {
+          "additionalProperties": false,
+          "properties": {
+            "chat": {
+              "type": "string"
+            },
+            "email": {
+              "type": "string"
+            },
+            "phone": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "email",
+            "phone",
+            "chat"
+          ],
+          "type": "object"
+        },
+        "legalName": {
+          "type": "string"
+        },
+        "taxId": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "legalName",
+        "taxId",
+        "address",
+        "contact"
+      ],
+      "type": "object"
+    },
+    "identityLinkingEnabled": {
+      "type": "boolean"
+    },
+    "identityProviderType": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "manifest_hash": {
+      "type": "string"
+    },
+    "manifest_jws": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "manifest_signed_at": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "policies": {
+      "additionalProperties": false,
+      "properties": {
+        "payment": {
+          "additionalProperties": false,
+          "properties": {
+            "acceptedMethods": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "securityStandard": {
+              "type": "string"
+            },
+            "withheldMethods": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "method": {
+                    "type": "string"
+                  },
+                  "reason": {
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "method",
+                  "reason"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            }
+          },
+          "required": [
+            "acceptedMethods",
+            "securityStandard"
+          ],
+          "type": "object"
+        },
+        "returns": {
+          "additionalProperties": false,
+          "properties": {
+            "freeReturnShipping": {
+              "type": "string"
+            },
+            "refundMethod": {
+              "type": "string"
+            },
+            "refundProcessingDays": {
+              "type": "number"
+            },
+            "windowDays": {
+              "type": "number"
+            }
+          },
+          "required": [
+            "windowDays",
+            "freeReturnShipping",
+            "refundMethod",
+            "refundProcessingDays"
+          ],
+          "type": "object"
+        },
+        "shipping": {
+          "additionalProperties": false,
+          "properties": {
+            "expressPrice": {
+              "type": "number"
+            },
+            "freeThresholdCents": {
+              "type": "number"
+            },
+            "overnightPrice": {
+              "type": "number"
+            },
+            "standardDeliveryDays": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "freeThresholdCents",
+            "standardDeliveryDays",
+            "expressPrice",
+            "overnightPrice"
+          ],
+          "type": "object"
+        },
+        "warranty": {
+          "additionalProperties": false,
+          "properties": {
+            "covered": {
+              "type": "string"
+            },
+            "periodYears": {
+              "type": "number"
+            }
+          },
+          "required": [
+            "periodYears",
+            "covered"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "returns",
+        "shipping",
+        "warranty",
+        "payment"
+      ],
+      "type": "object"
+    },
+    "protocolScopeNote": {
+      "type": "string"
+    },
+    "protocols": {
+      "additionalProperties": false,
+      "properties": {
+        "acp": {
+          "additionalProperties": false,
+          "properties": {
+            "enabled": {
+              "type": "boolean"
+            },
+            "provider": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "enabled",
+            "provider"
+          ],
+          "type": "object"
+        },
+        "ap2": {
+          "additionalProperties": false,
+          "properties": {
+            "enabled": {
+              "type": "boolean"
+            },
+            "provider": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "enabled",
+            "provider"
+          ],
+          "type": "object"
+        },
+        "ucp": {
+          "additionalProperties": false,
+          "properties": {
+            "enabled": {
+              "type": "boolean"
+            },
+            "version": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "enabled",
+            "version"
+          ],
+          "type": "object"
+        },
+        "vic": {
+          "additionalProperties": false,
+          "properties": {
+            "enabled": {
+              "type": "boolean"
+            },
+            "environment": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "enabled",
+            "environment"
+          ],
+          "type": "object"
+        },
+        "x402": {
+          "additionalProperties": false,
+          "properties": {
+            "enabled": {
+              "type": "boolean"
+            },
+            "provider": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "enabled",
+            "provider"
+          ],
+          "type": "object"
+        }
+      },
+      "required": [
+        "acp",
+        "ap2",
+        "x402"
+      ],
+      "type": "object"
+    },
+    "store": {
+      "additionalProperties": false,
+      "properties": {
+        "description": {
+          "type": "string"
+        },
+        "isDemo": {
+          "type": "boolean"
+        },
+        "name": {
+          "type": "string"
+        },
+        "slug": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "name",
+        "slug",
+        "description",
+        "isDemo"
+      ],
+      "type": "object"
+    },
+    "supportedProtocols": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "description": {
+            "type": "string"
+          },
+          "mode": {
+            "enum": [
+              "live",
+              "sandbox",
+              "coming_soon"
+            ],
+            "type": "string"
+          },
+          "name": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "name",
+          "mode",
+          "description"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "trust": {
+      "additionalProperties": false,
+      "properties": {
+        "componentsSourceOfTruth": {
+          "description": "Canonical source for the components behind overallScore.",
+          "type": "string"
+        },
+        "legacyV2Components": {
+          "additionalProperties": false,
+          "description": "Legacy v2 self-declared breakdown (0-1). Does NOT explain overallScore (v4.1). For the components behind the published score call GET /api/v1/stores/{slug}/trust-score, or get_store_trust for the signed envelope. Omitted when every value is zero.",
+          "properties": {
+            "catalogCompleteness": {
+              "type": "number"
+            },
+            "dataFreshness": {
+              "type": "number"
+            },
+            "policyClarity": {
+              "type": "number"
+            },
+            "priceAccuracy": {
+              "type": "number"
+            },
+            "responseTime": {
+              "type": "number"
+            },
+            "returnRate": {
+              "type": "number"
+            },
+            "stockReliability": {
+              "type": "number"
+            },
+            "verificationDepth": {
+              "type": "number"
+            }
+          },
+          "required": [
+            "catalogCompleteness",
+            "dataFreshness",
+            "priceAccuracy",
+            "stockReliability",
+            "policyClarity",
+            "responseTime",
+            "returnRate",
+            "verificationDepth"
+          ],
+          "type": "object"
+        },
+        "overallScore": {
+          "description": "Trust score, engine v4.1, scale 0-100. null = not published.",
+          "type": [
+            "number",
+            "null"
+          ]
+        },
+        "scoringVersion": {
+          "description": "Engine version behind overallScore ('4.1'), null when absent.",
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "verificationLevel": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "overallScore",
+        "scoringVersion",
+        "verificationLevel",
+        "componentsSourceOfTruth"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "store",
+    "identity",
+    "trust",
+    "policies",
+    "compliance",
+    "protocols",
+    "supportedProtocols",
+    "protocolScopeNote",
+    "agentPolicySummary",
+    "discovery",
+    "identityLinkingEnabled",
+    "identityProviderType",
+    "acpFeedUrl",
+    "enrichedCatalogEnabled",
+    "manifest_hash",
+    "manifest_signed_at",
+    "manifest_jws"
+  ],
+  "type": "object"
+}

Changed2 schema fields changedAug 24, 2026
- addedInput schema / $schema
```
Added value: +"http://json-schema.org/draft-07/schema#"
```
- addedInput schema / properties
```
Added value: +{}
```

Changed3 schema fields changedJul 10, 2026

removedInput schema / $schema

Removed value: -"http://json-schema.org/draft-07/schema#"

removedInput schema / properties
```
Removed value: -{}
```

changedOutput schema / (root)

Previous value: -{
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "additionalProperties": false,
-  "properties": {
-    "acpFeedUrl": {
-      "type": "string"
-    },
-    "agentPolicySummary": {
-      "additionalProperties": false,
-      "properties": {
-        "allowedShippingCountries": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "alwaysConfirm": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        },
-        "confirmationRequiredAboveUsd": {
-          "type": "number"
-        },
-        "maxCartValueUsd": {
-          "type": "number"
-        },
-        "neverConfirm": {
-          "items": {
-            "type": "string"
-          },
-          "type": "array"
-        }
-      },
-      "required": [
-        "maxCartValueUsd",
-        "confirmationRequiredAboveUsd",
-        "allowedShippingCountries",
-        "alwaysConfirm",
-        "neverConfirm"
-      ],
-      "type": "object"
-    },
-    "compliance": {
-      "additionalProperties": false,
-      "properties": {
-        "dataRetentionDays": {
-          "type": "number"
-        },
-        "encryptionAtRest": {
-          "type": "string"
-        },
-        "encryptionInTransit": {
-          "type": "string"
-        },
-        "gdprDataController": {
-          "type": "string"
-        },
-        "pciDssLevel": {
-          "type": "number"
-        }
-      },
-      "required": [
-        "gdprDataController",
-        "pciDssLevel",
-        "encryptionAtRest",
-        "encryptionInTransit",
-        "dataRetentionDays"
-      ],
-      "type": "object"
-    },
-    "discovery": {
-      "additionalProperties": false,
-      "properties": {
-        "agUiEndpoint": {
-          "type": "string"
-        },
-        "agentCard": {
-          "type": "string"
-        },
-        "agentPolicy": {
-          "type": "string"
-        },
-        "llmsTxt": {
-          "type": "string"
-        },
-        "mcpEndpoint": {
-          "type": "string"
-        },
-        "ucpProfile": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "mcpEndpoint",
-        "agUiEndpoint",
-        "agentCard",
-        "agentPolicy",
-        "ucpProfile",
-        "llmsTxt"
-      ],
-      "type": "object"
-    },
-    "enrichedCatalogEnabled": {
-      "type": "boolean"
-    },
-    "identity": {
-      "additionalProperties": false,
-      "properties": {
-        "address": {
-          "additionalProperties": false,
-          "properties": {
-            "city": {
-              "type": "string"
-            },
-            "country": {
-              "type": "string"
-            },
-            "postalCode": {
-              "type": "string"
-            },
-            "state": {
-              "type": "string"
-            },
-            "street": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "street",
-            "city",
-            "state",
-            "country",
-            "postalCode"
-          ],
-          "type": "object"
-        },
-        "contact": {
-          "additionalProperties": false,
-          "properties": {
-            "chat": {
-              "type": "string"
-            },
-            "email": {
-              "type": "string"
-            },
-            "phone": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "email",
-            "phone",
-            "chat"
-          ],
-          "type": "object"
-        },
-        "legalName": {
-          "type": "string"
-        },
-        "taxId": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "legalName",
-        "taxId",
-        "address",
-        "contact"
-      ],
-      "type": "object"
-    },
-    "identityLinkingEnabled": {
-      "type": "boolean"
-    },
-    "identityProviderType": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "manifest_hash": {
-      "type": "string"
-    },
-    "manifest_jws": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "manifest_signed_at": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "policies": {
-      "additionalProperties": false,
-      "properties": {
-        "payment": {
-          "additionalProperties": false,
-          "properties": {
-            "acceptedMethods": {
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
-            },
-            "securityStandard": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "acceptedMethods",
-            "securityStandard"
-          ],
-          "type": "object"
-        },
-        "returns": {
-          "additionalProperties": false,
-          "properties": {
-            "freeReturnShipping": {
-              "type": "string"
-            },
-            "refundMethod": {
-              "type": "string"
-            },
-            "refundProcessingDays": {
-              "type": "number"
-            },
-            "windowDays": {
-              "type": "number"
-            }
-          },
-          "required": [
-            "windowDays",
-            "freeReturnShipping",
-            "refundMethod",
-            "refundProcessingDays"
-          ],
-          "type": "object"
-        },
-        "shipping": {
-          "additionalProperties": false,
-          "properties": {
-            "expressPrice": {
-              "type": "number"
-            },
-            "freeThresholdCents": {
-              "type": "number"
-            },
-            "overnightPrice": {
-              "type": "number"
-            },
-            "standardDeliveryDays": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "freeThresholdCents",
-            "standardDeliveryDays",
-            "expressPrice",
-            "overnightPrice"
-          ],
-          "type": "object"
-        },
-        "warranty": {
-          "additionalProperties": false,
-          "properties": {
-            "covered": {
-              "type": "string"
-            },
-            "periodYears": {
-              "type": "number"
-            }
-          },
-          "required": [
-            "periodYears",
-            "covered"
-          ],
-          "type": "object"
-        }
-      },
-      "required": [
-        "returns",
-        "shipping",
-        "warranty",
-        "payment"
-      ],
-      "type": "object"
-    },
-    "protocols": {
-      "additionalProperties": false,
-      "properties": {
-        "acp": {
-          "additionalProperties": false,
-          "properties": {
-            "enabled": {
-              "type": "boolean"
-            },
-            "provider": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "enabled",
-            "provider"
-          ],
-          "type": "object"
-        },
-        "ap2": {
-          "additionalProperties": false,
-          "properties": {
-            "enabled": {
-              "type": "boolean"
-            },
-            "provider": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "enabled",
-            "provider"
-          ],
-          "type": "object"
-        },
-        "x402": {
-          "additionalProperties": false,
-          "properties": {
-            "enabled": {
-              "type": "boolean"
-            },
-            "provider": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "enabled",
-            "provider"
-          ],
-          "type": "object"
-        }
-      },
-      "required": [
-        "acp",
-        "ap2",
-        "x402"
-      ],
-      "type": "object"
-    },
-    "store": {
-      "additionalProperties": false,
-      "properties": {
-        "description": {
-          "type": "string"
-        },
-        "isDemo": {
-          "type": "boolean"
-        },
-        "name": {
-          "type": "string"
-        },
-        "slug": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "name",
-        "slug",
-        "description",
-        "isDemo"
-      ],
-      "type": "object"
-    },
-    "supportedProtocols": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "description": {
-            "type": "string"
-          },
-          "mode": {
-            "enum": [
-              "live",
-              "sandbox",
-              "coming_soon"
-            ],
-            "type": "string"
-          },
-          "name": {
-            "type": "string"
-          }
-        },
-        "required": [
-          "name",
-          "mode",
-          "description"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "trust": {
-      "additionalProperties": false,
-      "properties": {
-        "components": {
-          "additionalProperties": false,
-          "properties": {
-            "catalogCompleteness": {
-              "type": "number"
-            },
-            "dataFreshness": {
-              "type": "number"
-            },
-            "policyClarity": {
-              "type": "number"
-            },
-            "priceAccuracy": {
-              "type": "number"
-            },
-            "responseTime": {
-              "type": "number"
-            },
-            "returnRate": {
-              "type": "number"
-            },
-            "stockReliability": {
-              "type": "number"
-            },
-            "verificationDepth": {
-              "type": "number"
-            }
-          },
-          "required": [
-            "catalogCompleteness",
-            "dataFreshness",
-            "priceAccuracy",
-            "stockReliability",
-            "policyClarity",
-            "responseTime",
-            "returnRate",
-            "verificationDepth"
-          ],
-          "type": "object"
-        },
-        "overallScore": {
-          "type": "number"
-        },
-        "verificationLevel": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "overallScore",
-        "verificationLevel",
-        "components"
-      ],
-      "type": "object"
-    }
-  },
-  "required": [
-    "store",
-    "identity",
-    "trust",
-    "policies",
-    "compliance",
-    "protocols",
-    "supportedProtocols",
-    "agentPolicySummary",
-    "discovery",
-    "identityLinkingEnabled",
-    "identityProviderType",
-    "acpFeedUrl",
-    "enrichedCatalogEnabled",
-    "manifest_hash",
-    "manifest_signed_at",
-    "manifest_jws"
-  ],
-  "type": "object"
-}New value: +null

Changed4 schema fields changedMay 1, 2026

addedOutput schema / properties / manifest_hash
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / manifest_jws

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

addedOutput schema / properties / manifest_signed_at

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

changedOutput schema / required

Previous value: -[
-  "store",
-  "identity",
-  "trust",
-  "policies",
-  "compliance",
-  "protocols",
-  "supportedProtocols",
-  "agentPolicySummary",
-  "discovery",
-  "identityLinkingEnabled",
-  "identityProviderType",
-  "acpFeedUrl",
-  "enrichedCatalogEnabled"
-]New value: +[
+  "store",
+  "identity",
+  "trust",
+  "policies",
+  "compliance",
+  "protocols",
+  "supportedProtocols",
+  "agentPolicySummary",
+  "discovery",
+  "identityLinkingEnabled",
+  "identityProviderType",
+  "acpFeedUrl",
+  "enrichedCatalogEnabled",
+  "manifest_hash",
+  "manifest_signed_at",
+  "manifest_jws"
+]

First observedApr 28, 2026

TDQS

A4.6/5.0

Behavior4/5

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

Annotations already declare readOnly, idempotent, openWorld, and non-destructive behavior. The description adds meaningful context beyond those: the merchant is determined by the endpoint, no parameter selects it, and the returned profile covers specific data domains. There is no contradiction with annotations.

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 with no filler. The core action and resource are front-loaded, the critical no-parameter constraint is explicit, and the cross-merchant instruction is placed last without bloating the description.

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?

For a simple read-only, zero-parameter tool with rich annotations and an output schema, the description covers everything needed to call it correctly: what is returned, how the merchant is determined, why no arguments are required, and how to target another merchant.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

There are zero parameters and the description proactively explains why, preventing an agent from inventing a merchant ID or store slug argument. This is stronger than the baseline for parameterless tools because it resolves the most likely confusion.

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 clearly states a specific action and resource: getting the complete merchant profile, and lists the concrete content categories (trust score, policies, compliance, protocol support). It is distinct from sibling tools focused on products, carts, checkout, or content pages.

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?

The description explicitly explains when to use the tool and the unusual zero-parameter model, including how to handle a different merchant by calling the same tool on that merchant's endpoint. It does not explicitly name sibling exclusions, but the resource scope makes the intended use clear.

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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