Brainy Prices — UAE Cost of Living

free_zone_companies

Read-onlyIdempotent

Free zone company setup: package prices, annual/monthly cost, visas.

Input Schema

Name	Required	Description	Default
`zone`	No
`cursor`	No
`emirate`	No
`page_size`	No
`published`	No

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 30, 2026
- removedOutput schema / $schema
```
Removed value: -"https://json-schema.org/draft/2020-12/schema"
```
Changed1 schema field changedOct 13, 2026
- removedInput schema / $schema
```
Removed value: -"https://json-schema.org/draft/2020-12/schema"
```

Changed10 schema fields changedOct 6, 2026

removedInput schema / properties / emirate / type
```
Removed value: -"string"
```
removedInput schema / properties / published / type
```
Removed value: -"string"
```

removedOutput schema / $defs / CompanyContext

Removed value: -{
-  "additionalProperties": true,
-  "required": [
-    "mainland"
-  ],
-  "type": "object"
-}

removedOutput schema / $defs / FreeZoneSetup

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "emirate_id": {
-      "enum": [
-        "dubai",
-        "abu_dhabi",
-        "sharjah",
-        "ajman",
-        "umm_al_quwain",
-        "ras_al_khaimah",
-        "fujairah",
-        null
-      ],
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "name": {
-      "type": "string"
-    },
-    "official_site": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "packages": {
-      "items": {
-        "additionalProperties": false,
-        "properties": {
-          "first_year_aed": {
-            "type": [
-              "number",
-              "null"
-            ]
-          },
-          "monthly_aed": {
-            "type": [
-              "number",
-              "null"
-            ]
-          },
-          "name": {
-            "type": "string"
-          },
-          "qualifier": {
-            "enum": [
-              "exact",
-              "from"
-            ],
-            "type": "string"
-          },
-          "quote": {
-            "type": "string"
-          },
-          "renewal_aed": {
-            "type": [
-              "number",
-              "null"
-            ]
-          },
-          "retrieved_at": {
-            "anyOf": [
-              {
-                "type": "string"
-              },
-              {
-                "type": "null"
-              }
-            ]
-          },
-          "source_url": {
-            "type": "string"
-          },
-          "visas_included": {
-            "type": [
-              "integer",
-              "null"
-            ]
-          }
-        },
-        "required": [
-          "name",
-          "visas_included",
-          "first_year_aed",
-          "monthly_aed",
-          "renewal_aed",
-          "qualifier",
-          "quote",
-          "source_url",
-          "retrieved_at"
-        ],
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "provenance": {
-      "$ref": "#/$defs/Provenance"
-    },
-    "published": {
-      "enum": [
-        "one_visa",
-        "partial",
-        "none",
-        "paused"
-      ],
-      "type": "string"
-    },
-    "zone_id": {
-      "type": "string"
-    }
-  },
-  "required": [
-    "zone_id",
-    "name",
-    "emirate_id",
-    "official_site",
-    "published",
-    "packages",
-    "provenance"
-  ],
-  "type": "object"
-}

removedOutput schema / $defs / FreeZoneSetupListResponse

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "context": {
-      "anyOf": [
-        {
-          "$ref": "#/$defs/CompanyContext"
-        },
-        {
-          "type": "null"
-        }
-      ]
-    },
-    "data": {
-      "items": {
-        "$ref": "#/$defs/FreeZoneSetup"
-      },
-      "type": "array"
-    },
-    "links": {
-      "$ref": "#/$defs/Links"
-    },
-    "meta": {
-      "$ref": "#/$defs/ResponseMeta"
-    }
-  },
-  "required": [
-    "meta",
-    "context",
-    "data",
-    "links"
-  ],
-  "type": "object"
-}

removedOutput schema / $defs / Links

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "docs": {
-      "type": "string"
-    },
-    "next": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "open_in_browser": {
-      "type": [
-        "string",
-        "null"
-      ]
-    },
-    "self": {
-      "type": "string"
-    }
-  },
-  "required": [
-    "self",
-    "next",
-    "open_in_browser",
-    "docs"
-  ],
-  "type": "object"
-}

removedOutput schema / $defs / Provenance

Removed value: -{
-  "additionalProperties": true,
-  "required": [
-    "source_id",
-    "license_id",
-    "source_url",
-    "observed_on",
-    "observed_at",
-    "published_on",
-    "published_at",
-    "retrieved_at",
-    "stale",
-    "status",
-    "paused_since",
-    "flags"
-  ],
-  "type": "object"
-}

removedOutput schema / $defs / ResponseMeta

Removed value: -{
-  "additionalProperties": true,
-  "required": [
-    "api_version",
-    "content_language",
-    "generated_at",
-    "currency",
-    "attribution",
-    "disclaimer",
-    "dataset",
-    "page"
-  ],
-  "type": "object"
-}

removedOutput schema / $defs / ToolFailure

Removed value: -{
-  "additionalProperties": false,
-  "properties": {
-    "error": {
-      "additionalProperties": false,
-      "properties": {
-        "code": {
-          "type": "string"
-        },
-        "message": {
-          "type": "string"
-        },
-        "retry_after_s": {
-          "type": [
-            "integer",
-            "null"
-          ]
-        },
-        "retryable": {
-          "type": "boolean"
-        }
-      },
-      "required": [
-        "code",
-        "message",
-        "retryable",
-        "retry_after_s"
-      ],
-      "type": "object"
-    },
-    "request_id": {
-      "type": [
-        "string",
-        "null"
-      ]
-    }
-  },
-  "required": [
-    "error",
-    "request_id"
-  ],
-  "type": "object"
-}

changedOutput schema / anyOf

Previous value: -[
-  {
-    "$ref": "#/$defs/FreeZoneSetupListResponse"
-  },
-  {
-    "$ref": "#/$defs/ToolFailure"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "context": {
+        "anyOf": [
+          {
+            "additionalProperties": true,
+            "required": [
+              "mainland"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "data": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "emirate_id": {
+              "enum": [
+                "dubai",
+                "abu_dhabi",
+                "sharjah",
+                "ajman",
+                "umm_al_quwain",
+                "ras_al_khaimah",
+                "fujairah",
+                null
+              ]
+            },
+            "name": {
+              "type": "string"
+            },
+            "official_site": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "packages": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "first_year_aed": {
+                    "type": [
+                      "number",
+                      "null"
+                    ]
+                  },
+                  "monthly_aed": {
+                    "type": [
+                      "number",
+                      "null"
+                    ]
+                  },
+                  "name": {
+                    "type": "string"
+                  },
+                  "qualifier": {
+                    "enum": [
+                      "exact",
+                      "from"
+                    ]
+                  },
+                  "quote": {
+                    "type": "string"
+                  },
+                  "renewal_aed": {
+                    "type": [
+                      "number",
+                      "null"
+                    ]
+                  },
+                  "retrieved_at": {
+                    "anyOf": [
+                      {
+                        "type": "string"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "source_url": {
+                    "type": "string"
+                  },
+                  "visas_included": {
+                    "type": [
+                      "integer",
+                      "null"
+                    ]
+                  }
+                },
+                "required": [
+                  "name",
+                  "visas_included",
+                  "first_year_aed",
+                  "monthly_aed",
+                  "renewal_aed",
+                  "qualifier",
+                  "quote",
+                  "source_url",
+                  "retrieved_at"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "provenance": {
+              "additionalProperties": true,
+              "required": [
+                "source_id",
+                "license_id",
+                "source_url",
+                "observed_on",
+                "observed_at",
+                "published_on",
+                "published_at",
+                "retrieved_at",
+                "stale",
+                "status",
+                "paused_since",
+                "flags"
+              ],
+              "type": "object"
+            },
+            "published": {
+              "enum": [
+                "one_visa",
+                "partial",
+                "none",
+                "paused"
+              ]
+            },
+            "zone_id": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "zone_id",
+            "name",
+            "emirate_id",
+            "official_site",
+            "published",
+            "packages",
+            "provenance"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "links": {
+        "additionalProperties": false,
+        "properties": {
+          "docs": {
+            "type": "string"
+          },
+          "next": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "open_in_browser": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "self": {
+            "type": "string"
+          }
+        },
+        "required": [
+          "self",
+          "next",
+          "open_in_browser",
+          "docs"
+        ],
+        "type": "object"
+      },
+      "meta": {
+        "additionalProperties": true,
+        "required": [
+          "api_version",
+          "content_language",
+          "generated_at",
+          "currency",
+          "attribution",
+          "disclaimer",
+          "dataset",
+          "page"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "meta",
+      "context",
+      "data",
+      "links"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "error": {
+        "additionalProperties": false,
+        "properties": {
+          "code": {
+            "type": "string"
+          },
+          "message": {
+            "type": "string"
+          },
+          "retry_after_s": {
+            "type": [
+              "integer",
+              "null"
+            ]
+          },
+          "retryable": {
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "code",
+          "message",
+          "retryable",
+          "retry_after_s"
+        ],
+        "type": "object"
+      },
+      "request_id": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "required": [
+      "error",
+      "request_id"
+    ],
+    "type": "object"
+  }
+]

AddedOct 4, 2026

TDQS

C2.4/5.0

Behavior2/5

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

Annotations already declare readOnlyHint, idempotentHint, non-destructive behavior, and closed-world scope. The description adds no behavioral context beyond listing domain data, such as filtering behavior, pagination constraints, or how the published status affects results.

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

Conciseness3/5

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

The description is a single concise fragment with no wasted words and is front-loaded. However, it is under-specified for a five-parameter tool, so its brevity comes at the cost of useful structure and guidance.

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 tool has five optional filters, including pagination and two enums, with no schema descriptions; the description does not compensate for that gap. Although annotations and an output schema reduce some burden, an agent still lacks enough context to understand what each filter does or how to page through results.

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

Parameters1/5

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

Schema description coverage is 0% and the description does not explain any of the five parameters. It mentions output-oriented concepts like package prices and visas, but nothing about zone, cursor, emirate, page_size, or the published enum values.

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 a specific resource, free zone company setup, and lists the data it covers: package prices, annual/monthly cost, and visas. It is clear enough to distinguish the domain, but it uses a noun-phrase fragment rather than a verb and does not explicitly differentiate itself from siblings like residence_visas or costs_by_emirate.

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?

The description implies the tool is for free zone company setup costs, but gives no explicit when-to-use guidance or exclusions. It does not mention when to choose this over residence_visas, costs_by_emirate, or move_to_dubai.

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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