catalog

Compare two parts attribute by attribute

compare_parts

Read-onlyIdempotent

Aligned attribute-by-attribute comparison of two catalogue parts. Absence means the sources did not state a value — never that the part lacks the property.

Input Schema

Name	Required	Description
`a`	Yes	First part id
`b`	Yes	Second part id
`project_context`	No	One sentence on what you are building. Results are ranked for your project. Queries and this context are logged anonymously to power the public demo dashboard.

Output Schema

Name	Required	Description	Default
`rows`	Yes
`summary`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 28, 2026
- removedOutput schema / properties / rows / items / properties / a / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / rows / items / properties / a / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / rows / items / properties / b / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / rows / items / properties / b / type
```
Added value: +[
+  "string",
+  "null"
+]
```
Changed2 schema fields changedOct 19, 2026
- addedInput schema / properties / a / maxLength
```
Added value: +128
```
- addedInput schema / properties / b / maxLength
```
Added value: +128
```
AddedAug 19, 2026

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