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.

Changed3 schema fields changedSep 24, 2026

changedOutput schema / properties / trust / properties / legacyV2Components / description

Previous value: -"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."New value: +"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. Omitted when every value is zero."

addedOutput schema / properties / trust / properties / verificationProvenance

Added value: +{
+  "enum": [
+    "seeded",
+    "verified"
+  ],
+  "type": "string"
+}

changedOutput schema / properties / trust / required

Previous value: -[
-  "overallScore",
-  "scoringVersion",
-  "verificationLevel",
-  "componentsSourceOfTruth"
-]New value: +[
+  "overallScore",
+  "scoringVersion",
+  "verificationLevel",
+  "verificationProvenance",
+  "componentsSourceOfTruth"
+]

Changed12 schema fields changedSep 22, 2026
- addedOutput schema / properties / compliance / properties / provenance
```
Added value: +{
+  "$ref": "#/properties/identity/properties/provenance"
+}
```
- addedOutput schema / properties / compliance / properties / verified
```
Added value: +{
+  "$ref": "#/properties/identity/properties/verified"
+}
```
- addedOutput schema / properties / identity / properties / provenance
```
Added value: +{
+  "const": "synthetic_demo",
+  "description": "Present only on showcase/demo stores: this block is synthetic demo data, not a real seller's claim.",
+  "type": "string"
+}
```
- addedOutput schema / properties / identity / properties / verified
```
Added value: +{
+  "const": false,
+  "type": "boolean"
+}
```
- addedOutput schema / properties / policies / properties / payment / properties / provenance
```
Added value: +{
+  "$ref": "#/properties/identity/properties/provenance"
+}
```
- addedOutput schema / properties / policies / properties / payment / properties / verified
```
Added value: +{
+  "$ref": "#/properties/identity/properties/verified"
+}
```
- addedOutput schema / properties / policies / properties / returns / properties / provenance
```
Added value: +{
+  "$ref": "#/properties/identity/properties/provenance"
+}
```
- addedOutput schema / properties / policies / properties / returns / properties / verified
```
Added value: +{
+  "$ref": "#/properties/identity/properties/verified"
+}
```
- addedOutput schema / properties / policies / properties / shipping / properties / provenance
```
Added value: +{
+  "$ref": "#/properties/identity/properties/provenance"
+}
```
- addedOutput schema / properties / policies / properties / shipping / properties / verified
```
Added value: +{
+  "$ref": "#/properties/identity/properties/verified"
+}
```
- addedOutput schema / properties / policies / properties / warranty / properties / provenance
```
Added value: +{
+  "$ref": "#/properties/identity/properties/provenance"
+}
```
- addedOutput schema / properties / policies / properties / warranty / properties / verified
```
Added value: +{
+  "$ref": "#/properties/identity/properties/verified"
+}
```
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

A4.4/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructiveness, so the safety profile is covered. The description adds valuable context: the merchant is fixed by endpoint, not by a parameter, and no parameters are accepted—this prevents misuse and clarifies an unusual behavioral trait.

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 pack the essential information with no waste: what the tool returns, why it takes no arguments, and what to do for a different merchant. The most critical fact—'Takes NO parameters'—is front-loaded in the second sentence, and the overall structure is easily scannable.

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?

Given the tool has zero parameters, rich annotations covering safety and idempotency, and an output schema, nothing an agent needs to call it correctly is missing. The endpoint-binding behavior is explicitly clarified, which is the main source of potential confusion.

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?

With zero parameters, the schema alone provides no semantic guidance. The description explicitly states 'Takes NO parameters' and explains why the merchant is fixed by the endpoint, which is essential for an agent to avoid inventing arguments, especially since additionalProperties is true.

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?

The description clearly states that the tool retrieves the complete merchant profile, including trust score, policies, compliance, and protocol support. It identifies the resource and scope precisely, but does not explicitly differentiate itself from sibling tools like get_trust_receipt, which appears related.

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 explains when to use the tool: to read the profile of the merchant associated with the current MCP endpoint. It also provides a clear rule for accessing a different merchant's profile by using the same tool on that merchant's endpoint, though it does not mention alternative sibling tools.

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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