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Oct 23, 2025
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v3.1 specification: minor clarifications, markup improvements #4998

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b180dfd
Markdown improvements for the Style Values table
karenetheridge Sep 25, 2025
8e7b005
be explicit that this table shows ALL valid combinations
karenetheridge Sep 15, 2025
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16 changes: 8 additions & 8 deletions src/oas.md
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Expand Up @@ -1192,17 +1192,17 @@ Using `content` with a `text/plain` media type is RECOMMENDED for `in: "cookie"`

##### Style Values

In order to support common ways of serializing simple parameters, a set of `style` values are defined.
In order to support common ways of serializing simple parameters, a set of `style` values are defined. Combinations not represented in this table are not permitted.

| `style` | [`type`](#data-types) | `in` | Comments |
| ---- | ---- | ---- | ---- |
| matrix | `primitive`, `array`, `object` | `path` | Path-style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.7) |
| label | `primitive`, `array`, `object` | `path` | Label style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.5) |
| simple | `primitive`, `array`, `object` | `path`, `header` | Simple style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.2). This option replaces `collectionFormat` with a `csv` value from OpenAPI 2.0. |
| form | `primitive`, `array`, `object` | `query`, `cookie` | Form style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.8). This option replaces `collectionFormat` with a `csv` (when `explode` is false) or `multi` (when `explode` is true) value from OpenAPI 2.0. |
| spaceDelimited | `array`, `object` | `query` | Space separated array values or object properties and values. This option replaces `collectionFormat` equal to `ssv` from OpenAPI 2.0. |
| pipeDelimited | `array`, `object` | `query` | Pipe separated array values or object properties and values. This option replaces `collectionFormat` equal to `pipes` from OpenAPI 2.0. |
| deepObject | `object` | `query` | Allows objects with scalar properties to be represented using form parameters. The representation of array or object properties is not defined. |
| `matrix` | primitive, `array`, `object` | `path` | Path-style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.7) |
| `label` | primitive, `array`, `object` | `path` | Label style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.5) |
| `simple` | primitive, `array`, `object` | `path`, `header` | Simple style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.2). This option replaces `collectionFormat` with a `csv` value from OpenAPI 2.0. |
| `form` | primitive, `array`, `object` | `query`, `cookie` | Form style parameters defined by [RFC6570](https://tools.ietf.org/html/rfc6570#section-3.2.8). This option replaces `collectionFormat` with a `csv` (when `explode` is false) or `multi` (when `explode` is true) value from OpenAPI 2.0. |
| `spaceDelimited` | `array`, `object` | `query` | Space separated array values or object properties and values. This option replaces `collectionFormat` equal to `ssv` from OpenAPI 2.0. |
| `pipeDelimited` | `array`, `object` | `query` | Pipe separated array values or object properties and values. This option replaces `collectionFormat` equal to `pipes` from OpenAPI 2.0. |
| `deepObject` | `object` | `query` | Allows objects with scalar properties to be represented using form parameters. The representation of array or object properties is not defined. |

##### URL Percent-Encoding

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