Mirabello Immigration Intelligence

Flag CFC / PoE Risk

flag_cfc_poe_risk

Read-onlyIdempotent

Anti-avoidance & relocation-tax flags for a jurisdiction: CFC (controlled foreign company), GAAR (general anti-avoidance rule), POEM (place of effective management)/corporate-residence, economic substance, exit-tax detail and step-up-in-basis on becoming resident. The depth behind headline rates. Use ISO alpha-2. Indicative, not advice.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "cc": "<cc>"
    },
    "name": "flag_cfc_poe_risk"
  }
}

Input Schema

Name	Required	Description	Default
`cc`	Yes	Country: ISO 3166-1 alpha-2 code (e.g. "PT", "AE", "KN") or its name in any of the 11 site languages ("Portugal", "Schweiz", "UAE"); input_notes shows how it was read.

Output Schema

Name	Required	Description	Default
`error`	No
`terms`	No
`source`	No
`book_url`	No
`provider`	No
`disclaimer`	No
`data_updated`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedOct 25, 2026

changedInput schema / properties / cc / description

Previous value: -"ISO 3166-1 alpha-2 country code, uppercase (e.g. \"PT\" Portugal, \"AE\" United Arab Emirates, \"KN\" St Kitts and Nevis)."New value: +"Country: ISO 3166-1 alpha-2 code (e.g. \"PT\", \"AE\", \"KN\") or its name in any of the 11 site languages (\"Portugal\", \"Schweiz\", \"UAE\"); input_notes shows how it was read."

changedOutput schema / description

Previous value: -"Mirabello response envelope. Tool-specific fields vary; the provenance/disclaimer envelope is always present."New value: +"Mirabello envelope; tool fields vary; error only on failure."

removedOutput schema / properties / book_url / description

Removed value: -"Link to request a consultation with a Mirabello specialist, for a personal case."

removedOutput schema / properties / data_updated / description

Removed value: -"Date the underlying dataset was last updated."

removedOutput schema / properties / disclaimer / description

Removed value: -"Information, not legal/tax/financial/immigration advice; figures indicative."

removedOutput schema / properties / error / description

Removed value: -"Present only when the request could not be fulfilled."

removedOutput schema / properties / provider / description
```
Removed value: -"Always \"Mirabello Consultancy\"."
```

removedOutput schema / properties / source / description

Removed value: -"Attribution for the data, when it is not Mirabello Consultancy itself."

removedOutput schema / properties / terms / description

Removed value: -"Acceptable-use and information-not-advice terms."

Changed3 schema fields changedOct 8, 2026

removedOutput schema / properties / book_a_consultation

Removed value: -{
-  "description": "URL to book a Mirabello consultation.",
-  "type": "string"
-}

addedOutput schema / properties / book_url

Added value: +{
+  "description": "Link to request a consultation with a Mirabello specialist, for a personal case.",
+  "type": "string"
+}

changedOutput schema / properties / source / description

Previous value: -"Attribution for the data."New value: +"Attribution for the data, when it is not Mirabello Consultancy itself."

Changed2 schema fields changedSep 23, 2026

addedInput schema / properties / cc / description

Added value: +"ISO 3166-1 alpha-2 country code, uppercase (e.g. \"PT\" Portugal, \"AE\" United Arab Emirates, \"KN\" St Kitts and Nevis)."

addedInput schema / properties / cc / examples
```
Added value: +[
+  "PT",
+  "AE"
+]
```

Changed1 schema field changedJul 27, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "description": "Mirabello response envelope. Tool-specific fields vary; the provenance/disclaimer envelope is always present.",
+  "properties": {
+    "book_a_consultation": {
+      "description": "URL to book a Mirabello consultation.",
+      "type": "string"
+    },
+    "data_updated": {
+      "description": "Date the underlying dataset was last updated.",
+      "type": "string"
+    },
+    "disclaimer": {
+      "description": "Information, not legal/tax/financial/immigration advice; figures indicative.",
+      "type": "string"
+    },
+    "error": {
+      "description": "Present only when the request could not be fulfilled.",
+      "type": "string"
+    },
+    "provider": {
+      "description": "Always \"Mirabello Consultancy\".",
+      "type": "string"
+    },
+    "source": {
+      "description": "Attribution for the data.",
+      "type": "string"
+    },
+    "terms": {
+      "description": "Acceptable-use and information-not-advice terms.",
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

AddedJun 27, 2026

TDQS

A3.5/5.0

Behavior3/5

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

Annotations already establish read-only, idempotent, non-destructive, closed-world behavior, so the safety profile is covered. The description adds useful scope and the caveat 'Indicative, not advice,' but does not go further into confidence, coverage limits, or how flags are derived.

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 purpose and scope are front-loaded, and the description stays compact for a complex tax-risk domain. It is dense with acronyms, but every fragment contributes to defining the flag set or the advisory limitation.

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

Completeness4/5

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

For a one-parameter, read-only jurisdiction risk tool with an output schema, the description covers the relevant anti-avoidance subject areas and the 'not advice' limitation. It does not need to explain return values because an output schema exists.

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 description coverage is 100%, so the schema already fully documents the single `cc` parameter, including acceptance of country names beyond ISO alpha-2. The description's 'Use ISO alpha-2' is redundant and narrower than the schema, but the baseline is 3 because the schema carries the detailed semantics.

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 names a specific resource and scope: anti-avoidance and relocation-tax flags for a jurisdiction, then enumerates CFC, GAAR, POEM/corporate-residence, economic substance, exit tax, and step-up basis. 'The depth behind headline rates' implicitly distinguishes it from headline-rate siblings such as get_country_tax.

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 explains what the tool returns but gives no explicit when-to-use guidance, prerequisites, or alternatives. It does not say when to choose this over get_country_tax, compliance_checklist, or structuring-related tools.

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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