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ebay-mcp

by YosefHayim
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

ebay_send_offer_to_interested_buyers

Send discounted offers to interested buyers to convert interest into sales. Set price, quantity, and offer duration to close deals faster.

Instructions

Send offer to interested buyers

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
messageNoSeller-defined message to buyers (max 2000 characters)
offeredItemsNoArray of items to offer (currently limited to one item)
marketplaceIdNoThe eBay marketplace ID (X-EBAY-C-MARKETPLACE-ID header)
offerDurationNoDuration the offer is valid (default: 2 days)
allowCounterOfferNoWhether to allow counter-offers (currently must be false)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed8 schema fields changedv1.14.1
    • addedInput schema / properties / allowCounterOffer
      Added value: +{
+  "description": "Whether to allow counter-offers (currently must be false)",
+  "type": "boolean"
+}
    • removedInput schema / properties / allow_counter_offer
      Removed value: -{
-  "description": "Whether to allow counter-offers (currently must be false)",
-  "type": "boolean"
-}
    • addedInput schema / properties / marketplaceId
      Added value: +{
+  "description": "The eBay marketplace ID (X-EBAY-C-MARKETPLACE-ID header)",
+  "type": "string"
+}
    • removedInput schema / properties / marketplace_id
      Removed value: -{
-  "description": "The eBay marketplace ID (X-EBAY-C-MARKETPLACE-ID header)",
-  "type": "string"
-}
    • addedInput schema / properties / offerDuration
      Added value: +{
+  "additionalProperties": false,
+  "description": "Duration the offer is valid (default: 2 days)",
+  "properties": {
+    "unit": {
+      "description": "Time unit (currently must be DAY)",
+      "type": "string"
+    },
+    "value": {
+      "description": "Duration value (currently must be 2)",
+      "type": "integer"
+    }
+  },
+  "type": "object"
+}
    • removedInput schema / properties / offer_duration
      Removed value: -{
-  "additionalProperties": false,
-  "description": "Duration the offer is valid (default: 2 days)",
-  "properties": {
-    "unit": {
-      "description": "Time unit (currently must be DAY)",
-      "type": "string"
-    },
-    "value": {
-      "description": "Duration value (currently must be 2)",
-      "type": "integer"
-    }
-  },
-  "type": "object"
-}
    • addedInput schema / properties / offeredItems
      Added value: +{
+  "description": "Array of items to offer (currently limited to one item)",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "discountPercentage": {
+        "description": "Percentage discount (minimum 5)",
+        "type": "string"
+      },
+      "listingId": {
+        "description": "The unique eBay listing ID",
+        "type": "string"
+      },
+      "price": {
+        "additionalProperties": false,
+        "description": "The discounted price",
+        "properties": {
+          "currency": {
+            "description": "3-letter ISO 4217 currency code",
+            "type": "string"
+          },
+          "value": {
+            "description": "The monetary amount",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "quantity": {
+        "description": "Number of items (all-or-nothing offer)",
+        "type": "integer"
+      }
+    },
+    "type": "object"
+  },
+  "type": "array"
+}
    • removedInput schema / properties / offered_items
      Removed value: -{
-  "description": "Array of items to offer (currently limited to one item)",
-  "items": {
-    "additionalProperties": false,
-    "properties": {
-      "discount_percentage": {
-        "description": "Percentage discount (minimum 5)",
-        "type": "string"
-      },
-      "listing_id": {
-        "description": "The unique eBay listing ID",
-        "type": "string"
-      },
-      "price": {
-        "additionalProperties": false,
-        "description": "The discounted price",
-        "properties": {
-          "currency": {
-            "description": "3-letter ISO 4217 currency code",
-            "type": "string"
-          },
-          "value": {
-            "description": "The monetary amount",
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "quantity": {
-        "description": "Number of items (all-or-nothing offer)",
-        "type": "integer"
-      }
-    },
-    "type": "object"
-  },
-  "type": "array"
-}
  2. Changed8 schema fields changedv1.12.0
    • addedInput schema / properties / allow_counter_offer
      Added value: +{
+  "description": "Whether to allow counter-offers (currently must be false)",
+  "type": "boolean"
+}
    • addedInput schema / properties / marketplace_id
      Added value: +{
+  "description": "The eBay marketplace ID (X-EBAY-C-MARKETPLACE-ID header)",
+  "type": "string"
+}
    • addedInput schema / properties / message
      Added value: +{
+  "description": "Seller-defined message to buyers (max 2000 characters)",
+  "maxLength": 2000,
+  "type": "string"
+}
    • removedInput schema / properties / offerData
      Removed value: -{
-  "additionalProperties": true,
-  "description": "Offer details to send to buyers",
-  "properties": {
-    "allowCounterOffer": {
-      "type": "boolean"
-    },
-    "message": {
-      "type": "string"
-    },
-    "offeredItems": {
-      "items": {
-        "additionalProperties": true,
-        "properties": {
-          "availableQuantity": {
-            "type": "number"
-          },
-          "offerId": {
-            "type": "string"
-          },
-          "price": {
-            "additionalProperties": true,
-            "properties": {
-              "currency": {
-                "type": "string"
-              },
-              "value": {
-                "type": "string"
-              }
-            },
-            "required": [
-              "currency",
-              "value"
-            ],
-            "type": "object"
-          }
-        },
-        "type": "object"
-      },
-      "type": "array"
-    }
-  },
-  "type": "object"
-}
    • removedInput schema / properties / offerId
      Removed value: -{
-  "description": "The offer ID",
-  "type": "string"
-}
    • addedInput schema / properties / offer_duration
      Added value: +{
+  "additionalProperties": false,
+  "description": "Duration the offer is valid (default: 2 days)",
+  "properties": {
+    "unit": {
+      "description": "Time unit (currently must be DAY)",
+      "type": "string"
+    },
+    "value": {
+      "description": "Duration value (currently must be 2)",
+      "type": "integer"
+    }
+  },
+  "type": "object"
+}
    • addedInput schema / properties / offered_items
      Added value: +{
+  "description": "Array of items to offer (currently limited to one item)",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "discount_percentage": {
+        "description": "Percentage discount (minimum 5)",
+        "type": "string"
+      },
+      "listing_id": {
+        "description": "The unique eBay listing ID",
+        "type": "string"
+      },
+      "price": {
+        "additionalProperties": false,
+        "description": "The discounted price",
+        "properties": {
+          "currency": {
+            "description": "3-letter ISO 4217 currency code",
+            "type": "string"
+          },
+          "value": {
+            "description": "The monetary amount",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "quantity": {
+        "description": "Number of items (all-or-nothing offer)",
+        "type": "integer"
+      }
+    },
+    "type": "object"
+  },
+  "type": "array"
+}
    • removedInput schema / required
      Removed value: -[
-  "offerId",
-  "offerData"
-]
  3. First observedv1.8.10

TDQS

C2.7/5.0
Behavior1/5

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

No annotations and the description provides no behavioral details. It does not disclose what side effects occur (e.g., whether it modifies listings, sends notifications, requires permissions), leaving the agent without critical operational context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence, which is efficient for a simple action. However, it lacks any structural elements like examples or sections that could enhance usability.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the absence of annotations and output schema, the description is insufficient. It does not explain the required preconditions (e.g., existence of interested buyers), error scenarios, or the expected outcome, making it incomplete for an agent to reliably invoke.

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

Parameters3/5

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

The input schema has 100% coverage with descriptions for all 5 parameters, so the schema itself carries the semantic weight. The tool description adds no additional meaning beyond what the schema provides.

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 the action ('send offer') and target ('interested buyers'), making the purpose immediately understandable. It distinguishes itself from sibling tools like 'create_offer' or 'update_offer' by specifying the audience, though it could be more specific about the context.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus alternatives like 'ebay_create_offer' or 'ebay_update_offer'. The description lacks any context about prerequisites, when to use it, or when not to use it, leaving the agent to infer usage.

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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