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CardDeals Live Gift Card Deals

by io.github.cello305
OverviewDiscussionsAdmin

Get live deals for one gift-card brand

get_gift_card_deals
Read-onlyIdempotent

Use this when the user asks for complete current provider details for one exact gift-card brand. Accepts a brand slug, product ID such as brand:starbucks, or exact brand name. Do not use it for broad category discovery. Returns no purchase action—only current provider or CardDeals checkout links.

Input Schema

NameRequiredDescriptionDefault
brandYesExact CardDeals brand slug, product ID, or brand name.

Output Schema

NameRequiredDescriptionDefault
as_ofYes
messageNo
productYes
currencyYes
schema_versionYes
freshness_noticeYes
affiliate_disclosureYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / properties / product / anyOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "base_domain": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "best_discount_percent": {
-        "exclusiveMinimum": 0,
-        "type": "number"
-      },
-      "canonical_url": {
-        "format": "uri",
-        "type": "string"
-      },
-      "carddeals_inventory_status": {
-        "enum": [
-          "included",
-          "unavailable"
-        ],
-        "type": "string"
-      },
-      "category": {
-        "anyOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "name": {
-                "type": "string"
-              },
-              "slug": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "name",
-              "slug"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "deals": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "conditions": {
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
-            },
-            "coupon": {
-              "anyOf": [
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "code": {
-                      "type": "string"
-                    },
-                    "expiration": {
-                      "type": "string"
-                    },
-                    "label": {
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "code",
-                    "label",
-                    "expiration"
-                  ],
-                  "type": "object"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "deal_id": {
-              "type": "string"
-            },
-            "disclosure": {
-              "type": "string"
-            },
-            "discount_percent": {
-              "type": "number"
-            },
-            "fetched_at": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "id_verification_required": {
-              "type": "boolean"
-            },
-            "in_stock": {
-              "const": true,
-              "type": "boolean"
-            },
-            "listings": {
-              "items": {
-                "additionalProperties": false,
-                "properties": {
-                  "balance": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "currency": {
-                    "const": "USD",
-                    "type": "string"
-                  },
-                  "discount_percent": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "id": {
-                    "type": "string"
-                  },
-                  "price": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "purchase_url": {
-                    "format": "uri",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "id",
-                  "balance",
-                  "price",
-                  "discount_percent",
-                  "currency",
-                  "purchase_url"
-                ],
-                "type": "object"
-              },
-              "type": "array"
-            },
-            "provider_name": {
-              "type": "string"
-            },
-            "provider_slug": {
-              "type": "string"
-            },
-            "purchase_url": {
-              "format": "uri",
-              "type": "string"
-            },
-            "relationship": {
-              "enum": [
-                "affiliate",
-                "direct"
-              ],
-              "type": "string"
-            },
-            "seller_terms": {
-              "additionalProperties": false,
-              "properties": {
-                "note": {
-                  "type": "string"
-                },
-                "reported_guarantee_days": {
-                  "anyOf": [
-                    {
-                      "exclusiveMinimum": 0,
-                      "maximum": 9007199254740991,
-                      "type": "integer"
-                    },
-                    {
-                      "type": "null"
-                    }
-                  ]
-                }
-              },
-              "required": [
-                "reported_guarantee_days",
-                "note"
-              ],
-              "type": "object"
-            },
-            "variant": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "variant_label": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            }
-          },
-          "required": [
-            "deal_id",
-            "provider_name",
-            "provider_slug",
-            "discount_percent",
-            "in_stock",
-            "fetched_at",
-            "purchase_url",
-            "variant",
-            "variant_label",
-            "coupon",
-            "conditions",
-            "seller_terms",
-            "relationship",
-            "disclosure",
-            "id_verification_required"
-          ],
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "name": {
-        "type": "string"
-      },
-      "product_id": {
-        "type": "string"
-      },
-      "slug": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "product_id",
-      "name",
-      "slug",
-      "canonical_url",
-      "base_domain",
-      "category",
-      "best_discount_percent",
-      "carddeals_inventory_status",
-      "deals"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "base_domain": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "best_discount_percent": {
+        "exclusiveMinimum": 0,
+        "type": "number"
+      },
+      "canonical_url": {
+        "format": "uri",
+        "type": "string"
+      },
+      "carddeals_inventory_status": {
+        "enum": [
+          "included",
+          "unavailable"
+        ],
+        "type": "string"
+      },
+      "category": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "name": {
+                "type": "string"
+              },
+              "slug": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "name",
+              "slug"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "deals": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "conditions": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "coupon": {
+              "anyOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "code": {
+                      "type": "string"
+                    },
+                    "expiration": {
+                      "type": "string"
+                    },
+                    "label": {
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "label",
+                    "expiration"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "deal_id": {
+              "type": "string"
+            },
+            "disclosure": {
+              "type": "string"
+            },
+            "discount_percent": {
+              "type": "number"
+            },
+            "fetched_at": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "id_verification_required": {
+              "type": "boolean"
+            },
+            "in_stock": {
+              "const": true,
+              "type": "boolean"
+            },
+            "listings": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "balance": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "currency": {
+                    "const": "USD",
+                    "type": "string"
+                  },
+                  "discount_percent": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "id": {
+                    "type": "string"
+                  },
+                  "price": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "purchase_url": {
+                    "format": "uri",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "id",
+                  "balance",
+                  "price",
+                  "discount_percent",
+                  "currency",
+                  "purchase_url"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "provider_name": {
+              "type": "string"
+            },
+            "provider_slug": {
+              "type": "string"
+            },
+            "purchase_url": {
+              "format": "uri",
+              "type": "string"
+            },
+            "relationship": {
+              "enum": [
+                "affiliate",
+                "direct"
+              ],
+              "type": "string"
+            },
+            "seller_terms": {
+              "additionalProperties": false,
+              "properties": {
+                "note": {
+                  "type": "string"
+                },
+                "reported_guarantee_days": {
+                  "anyOf": [
+                    {
+                      "exclusiveMinimum": 0,
+                      "maximum": 9007199254740991,
+                      "type": "integer"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "reported_guarantee_days",
+                "note"
+              ],
+              "type": "object"
+            },
+            "variant": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "variant_label": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
+          },
+          "required": [
+            "deal_id",
+            "provider_name",
+            "provider_slug",
+            "discount_percent",
+            "in_stock",
+            "fetched_at",
+            "purchase_url",
+            "variant",
+            "variant_label",
+            "coupon",
+            "conditions",
+            "seller_terms",
+            "relationship",
+            "disclosure",
+            "id_verification_required"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "name": {
+        "type": "string"
+      },
+      "product_id": {
+        "type": "string"
+      },
+      "slug": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "product_id",
+      "name",
+      "slug",
+      "canonical_url",
+      "base_domain",
+      "category",
+      "best_discount_percent",
+      "carddeals_inventory_status",
+      "deals"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]
  2. Changed1 schema field changed
    • changedOutput schema / properties / product / anyOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "base_domain": {
-        "anyOf": [
-          {
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "best_discount_percent": {
-        "exclusiveMinimum": 0,
-        "type": "number"
-      },
-      "canonical_url": {
-        "format": "uri",
-        "type": "string"
-      },
-      "carddeals_inventory_status": {
-        "enum": [
-          "included",
-          "unavailable"
-        ],
-        "type": "string"
-      },
-      "category": {
-        "anyOf": [
-          {
-            "additionalProperties": false,
-            "properties": {
-              "name": {
-                "type": "string"
-              },
-              "slug": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "name",
-              "slug"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "deals": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "conditions": {
-              "items": {
-                "type": "string"
-              },
-              "type": "array"
-            },
-            "coupon": {
-              "anyOf": [
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "code": {
-                      "type": "string"
-                    },
-                    "expiration": {
-                      "type": "string"
-                    },
-                    "label": {
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "code",
-                    "label",
-                    "expiration"
-                  ],
-                  "type": "object"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "deal_id": {
-              "type": "string"
-            },
-            "disclosure": {
-              "type": "string"
-            },
-            "discount_percent": {
-              "type": "number"
-            },
-            "fetched_at": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "in_stock": {
-              "const": true,
-              "type": "boolean"
-            },
-            "listings": {
-              "items": {
-                "additionalProperties": false,
-                "properties": {
-                  "balance": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "currency": {
-                    "const": "USD",
-                    "type": "string"
-                  },
-                  "discount_percent": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "id": {
-                    "type": "string"
-                  },
-                  "price": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "purchase_url": {
-                    "format": "uri",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "id",
-                  "balance",
-                  "price",
-                  "discount_percent",
-                  "currency",
-                  "purchase_url"
-                ],
-                "type": "object"
-              },
-              "type": "array"
-            },
-            "provider_name": {
-              "type": "string"
-            },
-            "provider_slug": {
-              "type": "string"
-            },
-            "purchase_url": {
-              "format": "uri",
-              "type": "string"
-            },
-            "relationship": {
-              "enum": [
-                "affiliate",
-                "direct"
-              ],
-              "type": "string"
-            },
-            "seller_terms": {
-              "additionalProperties": false,
-              "properties": {
-                "note": {
-                  "type": "string"
-                },
-                "reported_guarantee_days": {
-                  "anyOf": [
-                    {
-                      "exclusiveMinimum": 0,
-                      "maximum": 9007199254740991,
-                      "type": "integer"
-                    },
-                    {
-                      "type": "null"
-                    }
-                  ]
-                }
-              },
-              "required": [
-                "reported_guarantee_days",
-                "note"
-              ],
-              "type": "object"
-            },
-            "variant": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            },
-            "variant_label": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ]
-            }
-          },
-          "required": [
-            "deal_id",
-            "provider_name",
-            "provider_slug",
-            "discount_percent",
-            "in_stock",
-            "fetched_at",
-            "purchase_url",
-            "variant",
-            "variant_label",
-            "coupon",
-            "conditions",
-            "seller_terms",
-            "relationship",
-            "disclosure"
-          ],
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "name": {
-        "type": "string"
-      },
-      "product_id": {
-        "type": "string"
-      },
-      "slug": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "product_id",
-      "name",
-      "slug",
-      "canonical_url",
-      "base_domain",
-      "category",
-      "best_discount_percent",
-      "carddeals_inventory_status",
-      "deals"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "base_domain": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "best_discount_percent": {
+        "exclusiveMinimum": 0,
+        "type": "number"
+      },
+      "canonical_url": {
+        "format": "uri",
+        "type": "string"
+      },
+      "carddeals_inventory_status": {
+        "enum": [
+          "included",
+          "unavailable"
+        ],
+        "type": "string"
+      },
+      "category": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "name": {
+                "type": "string"
+              },
+              "slug": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "name",
+              "slug"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "deals": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "conditions": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "coupon": {
+              "anyOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "code": {
+                      "type": "string"
+                    },
+                    "expiration": {
+                      "type": "string"
+                    },
+                    "label": {
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "code",
+                    "label",
+                    "expiration"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "deal_id": {
+              "type": "string"
+            },
+            "disclosure": {
+              "type": "string"
+            },
+            "discount_percent": {
+              "type": "number"
+            },
+            "fetched_at": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "id_verification_required": {
+              "type": "boolean"
+            },
+            "in_stock": {
+              "const": true,
+              "type": "boolean"
+            },
+            "listings": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "balance": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "currency": {
+                    "const": "USD",
+                    "type": "string"
+                  },
+                  "discount_percent": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "id": {
+                    "type": "string"
+                  },
+                  "price": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "purchase_url": {
+                    "format": "uri",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "id",
+                  "balance",
+                  "price",
+                  "discount_percent",
+                  "currency",
+                  "purchase_url"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "provider_name": {
+              "type": "string"
+            },
+            "provider_slug": {
+              "type": "string"
+            },
+            "purchase_url": {
+              "format": "uri",
+              "type": "string"
+            },
+            "relationship": {
+              "enum": [
+                "affiliate",
+                "direct"
+              ],
+              "type": "string"
+            },
+            "seller_terms": {
+              "additionalProperties": false,
+              "properties": {
+                "note": {
+                  "type": "string"
+                },
+                "reported_guarantee_days": {
+                  "anyOf": [
+                    {
+                      "exclusiveMinimum": 0,
+                      "maximum": 9007199254740991,
+                      "type": "integer"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "reported_guarantee_days",
+                "note"
+              ],
+              "type": "object"
+            },
+            "variant": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "variant_label": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            }
+          },
+          "required": [
+            "deal_id",
+            "provider_name",
+            "provider_slug",
+            "discount_percent",
+            "in_stock",
+            "fetched_at",
+            "purchase_url",
+            "variant",
+            "variant_label",
+            "coupon",
+            "conditions",
+            "seller_terms",
+            "relationship",
+            "disclosure",
+            "id_verification_required"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "name": {
+        "type": "string"
+      },
+      "product_id": {
+        "type": "string"
+      },
+      "slug": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "product_id",
+      "name",
+      "slug",
+      "canonical_url",
+      "base_domain",
+      "category",
+      "best_discount_percent",
+      "carddeals_inventory_status",
+      "deals"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]
  3. First observed

TDQS

A4.7/5.0
Behavior4/5

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

While annotations cover safety (readOnlyHint), the description adds crucial behavioral context regarding the *output*. It informs the agent that the tool 'Returns no purchase action—only current provider or CardDeals checkout links,' which dictates the expected function and scope of the resulting data.

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?

The description is highly concise and well-structured, logically flowing from the use case to input constraints, to exclusion rules, and finally to output characteristics. No part is superfluous.

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 that the schema is fully defined and the output schema exists, the description provides all necessary context—input formats, scope limitations, and operational guarantees—to correctly select and invoke the tool.

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

Parameters4/5

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

Although the schema has 100% coverage, the description adds vital semantic meaning by detailing the expected format of the input parameter 'brand': 'brand slug, product ID such as brand:starbucks, or exact brand name.' This guides the agent on expected input syntax.

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 the purpose (getting live deals) and the specific scope (one exact brand). By explicitly stating, 'Do not use it for broad category discovery,' it successfully distinguishes this tool from potential siblings like search_gift_card_deals.

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

Usage Guidelines5/5

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

It provides crystal clear usage rules by defining the precise user intent ('when the user asks for complete current provider details for one exact gift-card brand') and explicitly defining a negative use case ('Do not use it for broad category discovery').

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

All CardDeals Live Gift Card Deals toolsInspect
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