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SIBIDZ

by io.sibidz
OverviewDiscussionsAdmin

Join auctions and manage bids

bid
DestructiveIdempotent

Join a run, authorize a maximum or place an explicit manual bid. Paid actions require request_id and max_fee; automatic increments and maximum cancellation are free. See auction://reference.

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed6 schema fields changed
    • removedInput schema / $defs / auction_id
      Removed value: -{
-  "format": "uuid",
-  "pattern": "^([\\da-fA-F]{8}-[\\da-fA-F]{4}-[1-8][\\da-fA-F]{3}-[89abAB][\\da-fA-F]{3}-[\\da-fA-F]{12}|0{8}-0{4}-0{4}-0{4}-0{12}|f{8}-f{4}-f{4}-f{4}-f{12})$",
-  "type": "string"
-}
    • removedInput schema / $defs / funding_accounts
      Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "grant_account_id": {
-      "format": "uuid",
-      "type": "string"
-    },
-    "normal_account_id": {
-      "format": "uuid",
-      "type": "string"
-    }
-  },
-  "type": "object"
-}
    • addedInput schema / $defs / run_id
      Added value: +{
+  "format": "uuid",
+  "pattern": "^([\\da-fA-F]{8}-[\\da-fA-F]{4}-[1-8][\\da-fA-F]{3}-[89abAB][\\da-fA-F]{3}-[\\da-fA-F]{12}|0{8}-0{4}-0{4}-0{4}-0{12}|f{8}-f{4}-f{4}-f{4}-f{12})$",
+  "type": "string"
+}
    • addedInput schema / $defs / src
      Added value: +{
+  "maxLength": 96,
+  "minLength": 1,
+  "pattern": "^[a-zA-Z0-9][a-zA-Z0-9 _.-]*$",
+  "type": "string"
+}
    • removedInput schema / $defs / utm_source
      Removed value: -{
-  "maxLength": 96,
-  "minLength": 1,
-  "pattern": "^[a-zA-Z0-9][a-zA-Z0-9 _.-]*$",
-  "type": "string"
-}
    • changedInput schema / oneOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "accept_terms": {
-        "enum": [
-          true
-        ]
-      },
-      "action": {
-        "enum": [
-          "join"
-        ]
-      },
-      "admission_hash": {
-        "$ref": "#/$defs/admission_hash"
-      },
-      "admission_version": {
-        "maxLength": 64,
-        "type": "string"
-      },
-      "attribution": {
-        "additionalProperties": false,
-        "properties": {
-          "captured_at": {
-            "format": "date-time",
-            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$",
-            "type": "string"
-          },
-          "channel": {
-            "enum": [
-              "browser",
-              "mcp"
-            ]
-          },
-          "src": {
-            "$ref": "#/$defs/utm_source"
-          },
-          "utm_campaign": {
-            "$ref": "#/$defs/utm_source"
-          },
-          "utm_content": {
-            "$ref": "#/$defs/utm_source"
-          },
-          "utm_medium": {
-            "$ref": "#/$defs/utm_source"
-          },
-          "utm_source": {
-            "$ref": "#/$defs/utm_source"
-          },
-          "utm_term": {
-            "$ref": "#/$defs/utm_source"
-          }
-        },
-        "type": "object"
-      },
-      "auction_id": {
-        "$ref": "#/$defs/auction_id"
-      },
-      "funding_accounts": {
-        "$ref": "#/$defs/funding_accounts"
-      },
-      "max_fee": {
-        "$ref": "#/$defs/max_fee"
-      },
-      "request_id": {
-        "$ref": "#/$defs/auction_id"
-      },
-      "run_id": {
-        "$ref": "#/$defs/auction_id"
-      },
-      "sale_contact_consent": {
-        "enum": [
-          true
-        ]
-      },
-      "sale_contact_hash": {
-        "$ref": "#/$defs/admission_hash"
-      },
-      "sale_contact_version": {
-        "maxLength": 64,
-        "type": "string"
-      }
-    },
-    "required": [
-      "action",
-      "auction_id",
-      "run_id",
-      "request_id"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "oneOf": [
-      {
-        "properties": {
-          "maximum": false,
-          "mode": {
-            "enum": [
-              "amount"
-            ]
-          }
-        },
-        "required": [
-          "price"
-        ]
-      },
-      {
-        "properties": {
-          "mode": {
-            "enum": [
-              "maximum"
-            ]
-          },
-          "price": false
-        },
-        "required": [
-          "mode",
-          "maximum"
-        ]
-      }
-    ],
-    "properties": {
-      "accept_terms": {
-        "anyOf": [
-          {
-            "enum": [
-              true
-            ]
-          },
-          {
-            "$ref": "#/$defs/admission_hash"
-          }
-        ]
-      },
-      "action": {
-        "enum": [
-          "place"
-        ]
-      },
-      "entry_id": {
-        "$ref": "#/$defs/auction_id"
-      },
-      "funding_accounts": {
-        "$ref": "#/$defs/funding_accounts"
-      },
-      "max_fee": {
-        "$ref": "#/$defs/max_fee"
-      },
-      "maximum": {
-        "$ref": "#/$defs/price"
-      },
-      "mode": {},
-      "price": {
-        "$ref": "#/$defs/price"
-      },
-      "request_id": {
-        "$ref": "#/$defs/auction_id"
-      },
-      "sale_contact_consent": {
-        "enum": [
-          true
-        ]
-      }
-    },
-    "required": [
-      "entry_id",
-      "action",
-      "request_id"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "oneOf": [
-      {
-        "properties": {
-          "mode": {
-            "enum": [
-              "bid"
-            ]
-          }
-        },
-        "required": [
-          "bid_seq",
-          "reason"
-        ]
-      },
-      {
-        "properties": {
-          "bid_seq": false,
-          "mode": {
-            "enum": [
-              "maximum"
-            ]
-          },
-          "reason": false
-        },
-        "required": [
-          "mode"
-        ]
-      }
-    ],
-    "properties": {
-      "action": {
-        "enum": [
-          "retract"
-        ]
-      },
-      "bid_seq": {
-        "pattern": "^[1-9]\\d*$",
-        "type": "string"
-      },
-      "entry_id": {
-        "$ref": "#/$defs/auction_id"
-      },
-      "funding_accounts": {
-        "$ref": "#/$defs/funding_accounts"
-      },
-      "max_fee": {
-        "$ref": "#/$defs/max_fee"
-      },
-      "mode": {},
-      "reason": {
-        "maxLength": 1000,
-        "minLength": 1,
-        "type": "string"
-      },
-      "request_id": {
-        "$ref": "#/$defs/auction_id"
-      }
-    },
-    "required": [
-      "entry_id",
-      "action",
-      "request_id"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "accept_terms": {
+        "enum": [
+          true
+        ]
+      },
+      "action": {
+        "enum": [
+          "join"
+        ]
+      },
+      "admission_hash": {
+        "$ref": "#/$defs/admission_hash"
+      },
+      "admission_version": {
+        "maxLength": 64,
+        "type": "string"
+      },
+      "attribution": {
+        "additionalProperties": false,
+        "properties": {
+          "captured_at": {
+            "format": "date-time",
+            "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$",
+            "type": "string"
+          },
+          "channel": {
+            "enum": [
+              "browser",
+              "mcp"
+            ]
+          },
+          "src": {
+            "$ref": "#/$defs/src"
+          },
+          "utm_campaign": {
+            "$ref": "#/$defs/src"
+          },
+          "utm_content": {
+            "$ref": "#/$defs/src"
+          },
+          "utm_medium": {
+            "$ref": "#/$defs/src"
+          },
+          "utm_source": {
+            "$ref": "#/$defs/src"
+          },
+          "utm_term": {
+            "$ref": "#/$defs/src"
+          }
+        },
+        "type": "object"
+      },
+      "auction_id": {
+        "$ref": "#/$defs/run_id"
+      },
+      "max_fee": {
+        "$ref": "#/$defs/max_fee"
+      },
+      "request_id": {
+        "$ref": "#/$defs/run_id"
+      },
+      "run_id": {
+        "$ref": "#/$defs/run_id"
+      },
+      "sale_contact_consent": {
+        "enum": [
+          true
+        ]
+      },
+      "sale_contact_hash": {
+        "$ref": "#/$defs/admission_hash"
+      },
+      "sale_contact_version": {
+        "maxLength": 64,
+        "type": "string"
+      }
+    },
+    "required": [
+      "action",
+      "auction_id",
+      "run_id",
+      "request_id"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "oneOf": [
+      {
+        "properties": {
+          "maximum": false,
+          "mode": {
+            "enum": [
+              "amount"
+            ]
+          }
+        },
+        "required": [
+          "price"
+        ]
+      },
+      {
+        "properties": {
+          "mode": {
+            "enum": [
+              "maximum"
+            ]
+          },
+          "price": false
+        },
+        "required": [
+          "mode",
+          "maximum"
+        ]
+      }
+    ],
+    "properties": {
+      "accept_terms": {
+        "anyOf": [
+          {
+            "enum": [
+              true
+            ]
+          },
+          {
+            "$ref": "#/$defs/admission_hash"
+          }
+        ]
+      },
+      "action": {
+        "enum": [
+          "place"
+        ]
+      },
+      "entry_id": {
+        "$ref": "#/$defs/run_id"
+      },
+      "max_fee": {
+        "$ref": "#/$defs/max_fee"
+      },
+      "maximum": {
+        "$ref": "#/$defs/price"
+      },
+      "mode": {},
+      "price": {
+        "$ref": "#/$defs/price"
+      },
+      "request_id": {
+        "$ref": "#/$defs/run_id"
+      },
+      "sale_contact_consent": {
+        "enum": [
+          true
+        ]
+      }
+    },
+    "required": [
+      "entry_id",
+      "action",
+      "request_id"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "oneOf": [
+      {
+        "properties": {
+          "mode": {
+            "enum": [
+              "bid"
+            ]
+          }
+        },
+        "required": [
+          "bid_seq",
+          "reason"
+        ]
+      },
+      {
+        "properties": {
+          "bid_seq": false,
+          "mode": {
+            "enum": [
+              "maximum"
+            ]
+          },
+          "reason": false
+        },
+        "required": [
+          "mode"
+        ]
+      }
+    ],
+    "properties": {
+      "action": {
+        "enum": [
+          "retract"
+        ]
+      },
+      "bid_seq": {
+        "pattern": "^[1-9]\\d*$",
+        "type": "string"
+      },
+      "entry_id": {
+        "$ref": "#/$defs/run_id"
+      },
+      "max_fee": {
+        "$ref": "#/$defs/max_fee"
+      },
+      "mode": {},
+      "reason": {
+        "maxLength": 1000,
+        "minLength": 1,
+        "type": "string"
+      },
+      "request_id": {
+        "$ref": "#/$defs/run_id"
+      }
+    },
+    "required": [
+      "entry_id",
+      "action",
+      "request_id"
+    ],
+    "type": "object"
+  }
+]
  2. First observed

TDQS

B3.3/5.0
Behavior3/5

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

The annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false. The description adds useful cost context about paid versus free actions, but it does not explain the destructive consequences of retracting or canceling a maximum beyond the cost note.

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 compact and front-loads the main actions before the cost rules and reference pointer. It uses only three sentences, though the action grouping could be slightly clearer.

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?

The underlying schema has three distinct oneOf action variants with many fields, and this is a destructive tool. The description mentions join, maximum, and manual bid, but omits retract entirely and does not explain entry_id, mode, maximum versus price, consent fields, or the auction reference contents.

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 reported as 100%, so the structured schema is the primary source for parameter meaning. The description adds that paid actions require request_id and max_fee, but it leaves most variant-specific fields such as entry_id, price, maximum, reason, and consent fields unexplained.

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 names concrete actions: joining a run, authorizing a maximum, and placing an explicit manual bid. It clearly concerns auction bidding, but does not explicitly distinguish this tool from siblings such as buy or sell.

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

Usage Guidelines3/5

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

It gives some conditional guidance by noting that paid actions require request_id and max_fee while automatic increments and maximum cancellation are free. However, it does not state when to choose this tool over buy, sell, or browse, nor does it explain the retract variant.

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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