10ML Perfume Finder

Compare perfumes

compare_perfumes

Read-onlyIdempotent

Compare 2 to 4 perfumes or colognes side by side: notes they share, notes only one has, accords, family, audience, launch year, longevity and projection, plus plain-language differences ('A is fresher, B is sweeter and lasts longer') and how close they are overall. Use when someone is choosing between named fragrances or asks how two differ ('Sauvage vs Bleu', 'Delina or Layton', 'Aventus or Layton for summer'). Not for finding perfumes like one (use find_similar_perfumes) and not for one perfume's details (use get_perfume).

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": {
      "perfumes": "<perfumes>"
    },
    "name": "compare_perfumes"
  }
}

Input Schema

Name	Required	Description	Default
`locale`	No	Language of the 10ml.com links and labels.	en
`perfumes`	Yes	2 to 4 perfumes, each a name with optional house or an id. Example: ["Dior Sauvage","Tom Ford Ombre Leather"]
`response_format`	No	concise (default) or detailed (adds pyramid, seasons, occasions, longevity).	concise

Output Schema

Name	Required	Description	Default
`source`	Yes
`message`	No
`perfumes`	Yes
`closeness`	Yes
`unresolved`	No
`differences`	Yes
`shared_notes`	Yes
`unique_notes`	Yes
`shared_accords`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 22, 2026

changedInput schema / properties / locale / enum

Previous value: -[
-  "en",
-  "de",
-  "fr",
-  "es",
-  "it",
-  "ro",
-  "el",
-  "hu",
-  "cs",
-  "pl",
-  "nl"
-]New value: +[
+  "en",
+  "de",
+  "fr",
+  "es",
+  "it",
+  "ro",
+  "el",
+  "hu",
+  "cs",
+  "pl",
+  "nl",
+  "pt",
+  "sv",
+  "da",
+  "fi",
+  "bg",
+  "hr"
+]

Changed1 schema field changedOct 21, 2026

changedInput schema / properties / locale / enum

Previous value: -[
-  "en",
-  "de",
-  "fr",
-  "es",
-  "it",
-  "ro",
-  "el",
-  "hu",
-  "cs",
-  "pl"
-]New value: +[
+  "en",
+  "de",
+  "fr",
+  "es",
+  "it",
+  "ro",
+  "el",
+  "hu",
+  "cs",
+  "pl",
+  "nl"
+]

Changed8 schema fields changedOct 21, 2026

changedInput schema / properties / locale / description

Previous value: -"Language of the 10ml.com links and labels. Perfume, house and note names stay as they are."New value: +"Language of the 10ml.com links and labels."

changedInput schema / properties / response_format / description

Previous value: -"concise (default) or detailed (adds note pyramid, seasons, occasions, longevity, projection)."New value: +"concise (default) or detailed (adds pyramid, seasons, occasions, longevity)."

removedOutput schema / properties / perfumes / items / properties

Removed value: -{
-  "accords": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "character": {
-    "type": "string"
-  },
-  "concentration": {
-    "type": "string"
-  },
-  "family": {
-    "type": "string"
-  },
-  "gender": {
-    "enum": [
-      "men",
-      "women",
-      "unisex"
-    ],
-    "type": "string"
-  },
-  "house": {
-    "type": "string"
-  },
-  "id": {
-    "type": "string"
-  },
-  "key_notes": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "links": {
-    "items": {
-      "properties": {
-        "title": {
-          "type": "string"
-        },
-        "type": {
-          "enum": [
-            "try",
-            "guide",
-            "note"
-          ],
-          "type": "string"
-        },
-        "url": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "type",
-        "title",
-        "url"
-      ],
-      "type": "object"
-    },
-    "type": "array"
-  },
-  "longevity": {
-    "type": "number"
-  },
-  "name": {
-    "type": "string"
-  },
-  "occasions": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "other_versions": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "perfumers": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "profile": {
-    "enum": [
-      "full",
-      "core"
-    ],
-    "type": "string"
-  },
-  "projection": {
-    "type": "number"
-  },
-  "pyramid": {
-    "properties": {
-      "base": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "heart": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      },
-      "top": {
-        "items": {
-          "type": "string"
-        },
-        "type": "array"
-      }
-    },
-    "required": [
-      "top",
-      "heart",
-      "base"
-    ],
-    "type": "object"
-  },
-  "seasons": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "styles": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  },
-  "year": {
-    "type": "number"
-  }
-}

removedOutput schema / properties / perfumes / items / required

Removed value: -[
-  "id",
-  "name",
-  "house",
-  "gender",
-  "family",
-  "accords",
-  "key_notes",
-  "character",
-  "links",
-  "profile"
-]

removedOutput schema / properties / unique_notes / additionalProperties

Removed value: -{
-  "items": {
-    "type": "string"
-  },
-  "type": "array"
-}

removedOutput schema / properties / unique_notes / propertyNames
```
Removed value: -{
-  "type": "string"
-}
```

removedOutput schema / properties / unresolved / items / properties

Removed value: -{
-  "query": {
-    "type": "string"
-  },
-  "suggestions": {
-    "items": {
-      "type": "string"
-    },
-    "type": "array"
-  }
-}

removedOutput schema / properties / unresolved / items / required
```
Removed value: -[
-  "query",
-  "suggestions"
-]
```

Changed15 schema fields changedOct 20, 2026
- removedOutput schema / properties / closeness / description
```
Removed value: -"How alike the perfumes are overall (average over all pairs)"
```
- removedOutput schema / properties / differences / description
```
Removed value: -"Plain-language differences, most important first"
```
- removedOutput schema / properties / perfumes / items / properties / accords / description
```
Removed value: -"Main accords, strongest first"
```
- removedOutput schema / properties / perfumes / items / properties / character / description
```
Removed value: -"One-sentence description by 10ML's fragrance editors"
```
- removedOutput schema / properties / perfumes / items / properties / family / description
```
Removed value: -"Fragrance family, e.g. \"amber floral\""
```
- removedOutput schema / properties / perfumes / items / properties / id / description
```
Removed value: -"Stable Fragrance Index id, usable with get_perfume and find_similar_perfumes"
```
- removedOutput schema / properties / perfumes / items / properties / key_notes / description
```
Removed value: -"The defining notes (empty when no pyramid is published)"
```
- removedOutput schema / properties / perfumes / items / properties / links / description
```
Removed value: -"1-3 relevant 10ml.com links"
```
- removedOutput schema / properties / perfumes / items / properties / links / items / properties / url / description
```
Removed value: -"A 10ml.com link in the requested locale"
```
- removedOutput schema / properties / perfumes / items / properties / longevity / description
```
Removed value: -"1 (short) to 5 (very long)"
```
- removedOutput schema / properties / perfumes / items / properties / other_versions / description
```
Removed value: -"Ids of other concentrations or flankers of the same perfume in the index"
```
- removedOutput schema / properties / perfumes / items / properties / projection / description
```
Removed value: -"1 (skin scent) to 5 (fills a room)"
```
- removedOutput schema / properties / perfumes / items / properties / year / description
```
Removed value: -"Launch year when known"
```
- removedOutput schema / properties / shared_notes / description
```
Removed value: -"Notes present in every compared perfume"
```
- removedOutput schema / properties / unique_notes / description
```
Removed value: -"Per perfume id: notes the others do not have"
```

Changed2 schema fields changedOct 20, 2026

addedOutput schema / properties / perfumes / items / properties / profile

Added value: +{
+  "enum": [
+    "full",
+    "core"
+  ],
+  "type": "string"
+}

changedOutput schema / properties / perfumes / items / required

Previous value: -[
-  "id",
-  "name",
-  "house",
-  "gender",
-  "family",
-  "accords",
-  "key_notes",
-  "character",
-  "links"
-]New value: +[
+  "id",
+  "name",
+  "house",
+  "gender",
+  "family",
+  "accords",
+  "key_notes",
+  "character",
+  "links",
+  "profile"
+]

Changed9 schema fields changedOct 19, 2026

removedInput schema / $schema

Removed value: -"http://json-schema.org/draft-07/schema#"

changedInput schema / properties / locale / description

Previous value: -"Language of the 10ml.com links and fixed labels: en, de, fr, es, it, ro, el, hu, cs or pl. Perfume, house and note names are never translated."New value: +"Language of the 10ml.com links and labels. Perfume, house and note names stay as they are."

changedInput schema / properties / response_format / description

Previous value: -"concise (default): the essentials, about a third of the size. detailed: adds the full note pyramid, seasons, occasions, longevity and projection."New value: +"concise (default) or detailed (adds note pyramid, seasons, occasions, longevity, projection)."

removedOutput schema / $schema

Removed value: -"http://json-schema.org/draft-07/schema#"

removedOutput schema / additionalProperties
```
Removed value: -false
```
removedOutput schema / properties / perfumes / items / additionalProperties
```
Removed value: -false
```
removedOutput schema / properties / perfumes / items / properties / links / items / additionalProperties
```
Removed value: -false
```
removedOutput schema / properties / perfumes / items / properties / pyramid / additionalProperties
```
Removed value: -false
```
removedOutput schema / properties / unresolved / items / additionalProperties
```
Removed value: -false
```

AddedOct 19, 2026

TDQS

A4.5/5.0

Behavior4/5

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

The annotations already establish that this is a safe, read-only, idempotent, non-destructive operation. The description adds useful behavioral context beyond annotations by explaining that the output includes plain-language comparative differences and an overall closeness assessment, though it does not discuss response limits, performance, or formatting behavior beyond what the schema provides.

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 front-loaded with the core comparison behavior and then adds usage guidance and exclusions. Every sentence contributes either scope, output expectations, or routing guidance, with no redundant filler.

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 that annotations cover safety and an output schema exists, the description does not need to explain return structure in full. It still provides enough comparative output context and clear sibling routing for an agent to invoke the tool correctly.

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 each parameter is already well documented in the input schema. The description reinforces the 2-to-4 perfume constraint and gives domain examples, but it does not add substantial parameter semantics beyond the schema's own descriptions for perfumes, locale, and response_format.

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 gives a specific verb and resource ('Compare 2 to 4 perfumes or colognes side by side') and enumerates the compared dimensions, including notes, accords, family, audience, launch year, longevity, and projection. It clearly distinguishes this tool from sibling tools by naming both find_similar_perfumes and get_perfume.

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?

It provides explicit when-to-use guidance with concrete examples such as 'Sauvage vs Bleu', 'Delina or Layton', and 'Aventus or Layton for summer'. It also explicitly states when not to use it: not for finding similar perfumes and not for a single perfume's details, routing those cases to named alternatives.

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

All 10ML Perfume Finder tools Inspect

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