Reference

Category

Category objects

Categories are hierarchical; a category's slug is its full root→leaf path (see Identifiers).

CategoryRef

The lightweight category reference embedded in part results and match responses.

JSON

1{
2  "slug": "amplifiers/operational-amplifiers",
3  "name": "Operational Amplifiers",
4  "path": [
5    {
6      "slug": "amplifiers",
7      "name": "Amplifiers"
8    },
9    {
10      "slug": "amplifiers/operational-amplifiers",
11      "name": "Operational Amplifiers"
12    }
13  ]
14}

Field	Type	Notes
`slug`	string	Full root→leaf path slug — the public identifier
`name`	string	This category's own (leaf) display name
`path`	`{slug,name}[]`	Ancestry from root to this category, inclusive — for breadcrumbs

CategoryNode

A node returned when browsing the tree (GET /v1/categories) — one entry per category at a level.

JSON

1{
2  "slug": "amplifiers/operational-amplifiers",
3  "name": "Operational Amplifiers",
4  "has_children": true,
5  "part_count": 1284
6}

Field	Type	Notes
`slug`	string	Full root→leaf path slug — the public identifier
`name`	string	This category's own (leaf) display name
`has_children`	bool	Whether the category has subcategories (i.e. can be expanded)
`part_count`	int	Number of parts in this category's subtree

Category

The fuller record from category detail (GET /v1/categories/{slug}): the node's own info, its breadcrumb path, and its immediate children (so you can walk the tree by requesting any child's slug next).

JSON

1{
2  "slug": "amplifiers/operational-amplifiers",
3  "name": "Operational Amplifiers",
4  "description": "Amplifiers that amplify the voltage difference between two inputs — used for signal conditioning, filtering, buffering, and analog computation.",
5  "path": [
6    {
7      "slug": "amplifiers",
8      "name": "Amplifiers"
9    },
10    {
11      "slug": "amplifiers/operational-amplifiers",
12      "name": "Operational Amplifiers"
13    }
14  ],
15  "children": [
16    {
17      "slug": "amplifiers/operational-amplifiers/precision",
18      "name": "Precision",
19      "has_children": false,
20      "part_count": 318
21    }
22  ]
23}

Field	Type	Notes
`slug`	string	Full root→leaf path slug — the public identifier
`name`	string	This category's own (leaf) display name
`description`	string	A brief description of what the category covers
`path`	`{slug,name}[]`	Ancestry from root to this category, inclusive — for breadcrumbs
`children`	`CategoryNode[]`	Immediate subcategories; empty for a leaf

Used by: Categories; CategoryRef is embedded in every part's categories.

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