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Guild Wars 2

by io.github.pipeworx-io
OverviewDiscussionsAdmin

Commerce Prices

commerce_prices
Read-onlyIdempotent

Bulk Guild Wars 2 Trading Post buy/sell quotes for many numeric item IDs at once; returns the raw copper unit_price and open quantity on each side for every ID passed. Use guild_wars_2_item_price for a single item looked up by its name with gold/silver/copper formatting.

Input Schema

NameRequiredDescriptionDefault
idsNoComma-separated numeric item IDs, e.g. "19976,19721".

Output Schema

NameRequiredDescriptionDefault
countNoNumber of items returned.
itemsNoTrading post prices

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / ids / description
      Added value: +"Comma-separated numeric item IDs, e.g. \"19976,19721\"."
  2. Changed4 schema fields changed
    • changedOutput schema / properties / count / type
      Previous value: -"integer"New value: +"number"
    • removedOutput schema / properties / items / items / properties
      Removed value: -{
-  "buys": {
-    "properties": {
-      "quantity": {
-        "description": "Buy quantity",
-        "type": "number"
-      },
-      "unit_price": {
-        "description": "Buy unit price",
-        "type": "number"
-      }
-    },
-    "type": "object"
-  },
-  "id": {
-    "description": "Item ID",
-    "type": "number"
-  },
-  "sells": {
-    "properties": {
-      "quantity": {
-        "description": "Sell quantity",
-        "type": "number"
-      },
-      "unit_price": {
-        "description": "Sell unit price",
-        "type": "number"
-      }
-    },
-    "type": "object"
-  },
-  "whitelisted": {
-    "description": "Whether item is whitelisted",
-    "type": "boolean"
-  }
-}
    • changedOutput schema / properties / items / items / type
      Previous value: -"object"New value: +"number"
    • removedOutput schema / required
      Removed value: -[
-  "items",
-  "count"
-]
  3. Changed2 schema fields changed
    • addedInput schema / examples
      Added value: +[
+  {
+    "ids": "19684,24291"
+  }
+]
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "properties": {
+    "count": {
+      "description": "Number of items returned.",
+      "type": "integer"
+    },
+    "items": {
+      "description": "Trading post prices",
+      "items": {
+        "properties": {
+          "buys": {
+            "properties": {
+              "quantity": {
+                "description": "Buy quantity",
+                "type": "number"
+              },
+              "unit_price": {
+                "description": "Buy unit price",
+                "type": "number"
+              }
+            },
+            "type": "object"
+          },
+          "id": {
+            "description": "Item ID",
+            "type": "number"
+          },
+          "sells": {
+            "properties": {
+              "quantity": {
+                "description": "Sell quantity",
+                "type": "number"
+              },
+              "unit_price": {
+                "description": "Sell unit price",
+                "type": "number"
+              }
+            },
+            "type": "object"
+          },
+          "whitelisted": {
+            "description": "Whether item is whitelisted",
+            "type": "boolean"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "items",
+    "count"
+  ],
+  "type": "object"
+}
  4. First observed

TDQS

A4.5/5.0
Behavior4/5

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

Annotations already declare read-only and idempotent behavior, but the description adds valuable context by specifying the raw output format (copper unit_price, open quantity per side) and the numeric-ID requirement. This goes beyond the annotations, though it doesn't discuss error handling or rate limits.

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 two sentences: the first establishes purpose and output, the second provides an alternative. It is front-loaded, economical, and contains no redundant or filler text.

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 output schema exists and annotations cover safety, the description fully covers purpose, usage, and output format for a simple one-parameter tool. No significant gaps remain.

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

Parameters3/5

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

Schema coverage is 100%: the ids parameter is described as 'Comma-separated numeric item IDs.' The description only reinforces 'many numeric item IDs,' adding no new semantic detail beyond what the schema already provides, so baseline 3 is appropriate.

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 opens with a specific action: 'Bulk Guild Wars 2 Trading Post buy/sell quotes for many numeric item IDs at once.' It clearly names the resource (Trading Post quotes) and distinguishes itself from guild_wars_2_item_price, which handles single items by name with formatted prices.

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?

Explicit guidance is given: 'Use guild_wars_2_item_price for a single item looked up by its name with gold/silver/copper formatting.' This tells the agent when to use this bulk tool vs the named alternative, making the choice straightforward.

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

All Guild Wars 2 toolsInspect
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