mcp-server

Estimate Total Cost

estimate_total_cost

Read-only

Estimate the total cost of a programme for a given family: investment + government & due-diligence fees + family add-ons. Indicative; excludes professional/property/legal fees.

Input Schema

TableJSON Schema

Name	Required	Description
`adults`	No	main + spouse/adult applicants (default 1)
`programme_id`	Yes	Programme id as returned by list_programmes (e.g. "st-kitts-cbi"). Not a country name and not a website slug.
`children_16plus`	No	Number of dependent children aged 16 or over — usually priced higher than under-16s.
`children_under16`	No	Number of dependent children aged under 16 — priced separately by most Caribbean programmes.

Output Schema

TableJSON Schema

Name	Required	Description
`error`	No	Present only when the request could not be fulfilled.
`terms`	No	Acceptable-use and information-not-advice terms.
`source`	No	Attribution for the data, when it is not Mirabello Consultancy itself.
`book_url`	No	Link to request a consultation with a Mirabello specialist, for a personal case.
`provider`	No	Always "Mirabello Consultancy".
`disclaimer`	No	Information, not legal/tax/financial/immigration advice; figures indicative.
`data_updated`	No	Date the underlying dataset was last updated.

Schema Changelog

Changes observed during successful MCP inspections.

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."

Changed6 schema fields changedSep 23, 2026

addedInput schema / properties / children_16plus / description

Added value: +"Number of dependent children aged 16 or over — usually priced higher than under-16s."

addedInput schema / properties / children_16plus / examples
```
Added value: +[
+  1
+]
```

addedInput schema / properties / children_under16 / description

Added value: +"Number of dependent children aged under 16 — priced separately by most Caribbean programmes."

addedInput schema / properties / children_under16 / examples
```
Added value: +[
+  1
+]
```

addedInput schema / properties / programme_id / description

Added value: +"Programme id as returned by list_programmes (e.g. \"st-kitts-cbi\"). Not a country name and not a website slug."

addedInput schema / properties / programme_id / examples
```
Added value: +[
+  "st-kitts-cbi"
+]
```

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"
+}

First observedJun 4, 2026

TDQS

A3.6/5.0

Behavior4/5

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

Annotations already establish this as a safe, non-destructive, closed-world read. The description adds genuinely useful disclosure beyond that: the result is indicative only and excludes professional, property, and legal fees, which tells the agent the number is not a full quote.

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?

A single front-loaded sentence that leads with the verb and resource, then layers the inclusions and the exclusion caveat. No wasted words.

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?

With an output schema present, return values need not be explained, and the annotations carry the safety profile. The description covers scope and the indicativeness caveat, leaving only sibling disambiguation unaddressed.

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 programme_id, adults, children_16plus, and children_under16 are already documented with defaults and examples. The description only implies family composition via 'for a given family' and adds no syntax or unit detail beyond the schema.

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?

Names a specific verb (estimate) and resource (total cost of a programme) and enumerates the cost components included: investment, government & due-diligence fees, family add-ons. It does not, however, differentiate itself from the sibling estimate_malta_passport_fee, which an agent would need to disambiguate between.

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 statement of when to use this tool versus list_programmes, compare_programmes, or estimate_malta_passport_fee. The only framing is a caveat about what the figure excludes, which is accuracy guidance rather than usage guidance.

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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