The Snippets API from Kit — 2 operation(s) for snippets.
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openapi: 3.2.0
info:
title: Kit Snippets API
version: '4.0'
servers:
- url: https://api.kit.com
tags:
- name: Snippets
paths:
/v4/snippets:
get:
summary: List snippets
description: 'Returns every snippet on the account. Each snippet''s `key` is the identifier used in Liquid — `{{ snippet.key }}` — when creating a broadcast or sequence email. See Create a snippet for how snippets work end-to-end.
**Tip:** the heavier `content` and `document` fields are omitted by default to keep responses fast. Pass `include_content=true` when you need the body — for example, to render a preview or audit Liquid usage.
Filter the result with `snippet_type` (`inline` or `block`) and `archived` (defaults to `false`, set `true` to list only archived snippets).'
tags:
- Snippets
security:
- API Key: []
- OAuth2: []
parameters:
- name: after
description: To fetch next page of results, use `?after=<end_cursor>`
in: query
required: false
schema: {}
- name: archived
description: When `true`, returns only archived snippets. Defaults to `false`.
in: query
required: false
schema: {}
- name: before
description: To fetch previous page of results, use `?before=<start_cursor>`
in: query
required: false
schema: {}
- name: include_content
description: When `true`, includes both the `content` and `document` fields for each snippet in the response. Defaults to `false`.
in: query
required: false
schema:
type: boolean
example: true
- name: include_total_count
description: Set to `true` to include the `total_count` in the response. This option can cause slow responses; if paging through results, request it only on the first page and reuse the value for subsequent pages.
in: query
required: false
schema:
type: boolean
example: false
- name: per_page
description: Number of results per page. Default 500, maximum 1000.
in: query
required: false
schema: {}
- name: snippet_type
description: Filter snippets by type. Use `inline` for text snippets or `block` for rich-text block snippets.
in: query
required: false
schema: {}
responses:
'200':
description: Returns a paginated list of all snippets for your account
content:
application/json:
schema:
type: object
properties:
snippets:
type: array
items:
type: object
properties:
id:
type: integer
name:
type: string
snippet_type:
type: string
archived:
type: boolean
key:
type: string
created_at:
type: string
updated_at:
type: string
content:
type: string
document:
type: object
properties:
id:
type: integer
value: {}
value_html:
type: string
value_plain: {}
version:
type: integer
required:
- id
- value
- value_html
- value_plain
- version
required:
- id
- name
- snippet_type
- archived
- key
- created_at
- updated_at
- content
- document
pagination:
type: object
properties:
has_previous_page:
type: boolean
has_next_page:
type: boolean
start_cursor:
type: string
end_cursor:
type: string
per_page:
type: integer
required:
- has_previous_page
- has_next_page
- start_cursor
- end_cursor
- per_page
required:
- snippets
- pagination
example:
snippets:
- id: 5
name: Welcome message
snippet_type: inline
archived: false
key: welcome-message
created_at: '2023-02-17T11:43:55Z'
updated_at: '2023-02-17T11:43:55Z'
content: Hello {{ subscriber.first_name }}
document:
id: 152
value: null
value_html: content
value_plain: null
version: 1
pagination:
has_previous_page: false
has_next_page: false
start_cursor: WzVd
end_cursor: WzVd
per_page: 500
'401':
description: Returns a 401 if the token and/or account cannot be authenticated
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- The access token is invalid
x-mcp:
enabled: true
operationId: getV4Snippets
x-operation-id-source: derived
post:
summary: Create a snippet
description: 'Snippets are reusable pieces of email content you can drop into a broadcast or sequence email using Liquid: `{{ snippet.key }}`. Update the snippet once and every email that references it picks up the new content on next send.
There are two `snippet_type`s. **`inline`** snippets store plain-text content (with Liquid variable support like `{{ subscriber.first_name }}`) in the `content` field. **`block`** snippets store rich-text HTML — text, lists, images, buttons — in `document_attributes.value_html`. A snippet''s type is fixed at creation: it cannot be changed via Update a snippet.
The response includes a `key` field. That''s the identifier you use in Liquid — for example, a snippet returned with `"key": "welcome-message"` is referenced inside a broadcast as `{{ snippet.welcome-message }}`. Keys are derived from the snippet name on creation.
**Note:** the API rejects circular references — a snippet cannot reference itself, directly or transitively — with a `422` validation error.
For end-user context on how creators build and edit snippets in the Kit UI, see the help articles on content snippets and code snippets for custom templates.'
tags:
- Snippets
security:
- API Key: []
- OAuth2: []
parameters: []
responses:
'201':
description: Creates a new snippet
content:
application/json:
schema:
type: object
properties:
snippet:
type: object
properties:
id:
type: integer
name:
type: string
snippet_type:
type: string
archived:
type: boolean
key:
type: string
created_at:
type: string
updated_at:
type: string
content:
type: string
document:
type: object
properties:
id:
type: integer
value: {}
value_html: {}
value_plain: {}
version:
type: integer
required:
- id
- value
- value_html
- value_plain
- version
required:
- id
- name
- snippet_type
- archived
- key
- created_at
- updated_at
- content
- document
required:
- snippet
example:
snippet:
id: 31
name: Cat Fact of the Day
snippet_type: inline
archived: false
key: cat-fact-of-the-day
created_at: '2026-06-11T16:16:17Z'
updated_at: '2026-06-11T16:16:17Z'
content: Did you know, {{ subscriber.first_name }}? Cats can rotate their ears 180 degrees.
document:
id: 178
value: null
value_html: null
value_plain: null
version: 1
'401':
description: Returns a 401 if the token and/or account cannot be authenticated
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- The access token is invalid
'422':
description: Returns a 422 with an error message when one or more of the parameters were invalid
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- name can't be blank
requestBody:
content:
application/json:
schema:
oneOf:
- title: Inline snippet
type: object
properties:
name:
type: string
description: Name of the snippet
snippet_type:
type: string
enum:
- inline
description: Must be 'inline'
content:
type: string
description: Liquid-enabled text content for the snippet
required:
- name
- snippet_type
- content
- title: Block snippet
type: object
properties:
name:
type: string
description: Name of the snippet
snippet_type:
type: string
enum:
- block
description: Must be 'block'
document_attributes:
type: object
description: Rich-text document for the snippet
properties:
value_html:
type: string
description: HTML content for the block snippet
required:
- value_html
required:
- name
- snippet_type
- document_attributes
example:
name: Cat Fact of the Day
snippet_type: inline
content: Did you know, {{ subscriber.first_name }}? Cats can rotate their ears 180 degrees.
x-mcp:
enabled: true
operationId: postV4Snippets
x-operation-id-source: derived
/v4/snippets/{id}:
get:
summary: Get a snippet
description: 'Fetches a single snippet by `id`. Unlike List snippets, this endpoint **always returns the full `content` and `document`** — no `include_content` flag needed.
Use this when you have an `id` (e.g. stored from a prior create call) and need the current `key` and body — for example, to preview the resolved HTML or confirm a snippet still exists before referencing it as `{{ snippet.key }}` in a broadcast or sequence email. See Create a snippet for the snippet model.'
tags:
- Snippets
security:
- API Key: []
- OAuth2: []
parameters:
- name: id
in: path
required: true
schema:
type: integer
example: 25
responses:
'200':
description: Returns the snippet details
content:
application/json:
schema:
type: object
properties:
snippet:
type: object
properties:
id:
type: integer
name:
type: string
snippet_type:
type: string
archived:
type: boolean
key:
type: string
created_at:
type: string
updated_at:
type: string
content:
type: string
document:
type: object
properties:
id:
type: integer
value: {}
value_html:
type: string
value_plain: {}
version:
type: integer
required:
- id
- value
- value_html
- value_plain
- version
required:
- id
- name
- snippet_type
- archived
- key
- created_at
- updated_at
- content
- document
required:
- snippet
example:
snippet:
id: 24
name: Welcome message
snippet_type: inline
archived: false
key: welcome-message
created_at: '2023-02-17T11:43:55Z'
updated_at: '2023-02-17T11:43:55Z'
content: Hello {{ subscriber.first_name }}
document:
id: 171
value: null
value_html: content
value_plain: null
version: 1
'401':
description: Returns a 401 if the token and/or account cannot be authenticated
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- The access token is invalid
'404':
description: Returns a 404 when the provided id does not exist
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- Not Found
x-mcp:
enabled: true
operationId: getV4SnippetsById
x-operation-id-source: derived
put:
summary: Update a snippet
description: 'Rename a snippet, replace its body, or archive/restore it. Updates apply on the next send of any email that references the snippet via `{{ snippet.key }}` — there''s no per-email versioning, so a content change ripples to every broadcast or sequence email using that key.
The request body must match the existing `snippet_type`. For an **`inline`** snippet, send `content` (and optionally `name`, `archived`). For a **`block`** snippet, send `document_attributes.value_html` (and optionally `name`, `archived`). Pass `archived: true` to archive, `false` to restore.
**Warning:** `snippet_type` is immutable. Sending a different value, or sending the body shape for the wrong type, returns a `422` with `snippet_type cannot be changed`.
See Create a snippet for the full snippet model and how `key` ties into Liquid.'
tags:
- Snippets
security:
- API Key: []
- OAuth2: []
parameters:
- name: id
in: path
required: true
schema:
type: integer
example: 60
responses:
'200':
description: Updates the snippet and returns its details
content:
application/json:
schema:
type: object
properties:
snippet:
type: object
properties:
id:
type: integer
name:
type: string
snippet_type:
type: string
archived:
type: boolean
key:
type: string
created_at:
type: string
updated_at:
type: string
content:
type: string
document:
type: object
properties:
id:
type: integer
value: {}
value_html:
type: string
value_plain: {}
version:
type: integer
required:
- id
- value
- value_html
- value_plain
- version
required:
- id
- name
- snippet_type
- archived
- key
- created_at
- updated_at
- content
- document
required:
- snippet
example:
snippet:
id: 59
name: Dog Fact of the Day
snippet_type: inline
archived: false
key: welcome-message
created_at: '2023-02-17T11:43:55Z'
updated_at: '2026-06-11T16:16:22Z'
content: Hello {{ subscriber.first_name }}
document:
id: 206
value: null
value_html: content
value_plain: null
version: 1
'401':
description: Returns a 401 if the token and/or account cannot be authenticated
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- The access token is invalid
'404':
description: Returns a 404 when the provided id does not exist
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- Not Found
'422':
description: Returns a 422 with an error message when one or more of the parameters were invalid
content:
application/json:
schema:
type: object
properties:
errors:
type: array
items:
type: string
required:
- errors
example:
errors:
- snippet_type cannot be changed
requestBody:
content:
application/json:
schema:
oneOf:
- title: Inline snippet
type: object
properties:
name:
type: string
description: New name for the snippet
snippet_type:
type: string
description: Cannot be changed — must match the existing type if provided
archived:
type: boolean
description: Pass `true` to archive or `false` to restore the snippet
content:
type: string
description: New Liquid-enabled text content
- title: Block snippet
type: object
properties:
name:
type: string
description: New name for the snippet
snippet_type:
type: string
description: Cannot be changed — must match the existing type if provided
archived:
type: boolean
description: Pass `true` to archive or `false` to restore the snippet
document_attributes:
type: object
description: Updated rich-text document
properties:
value_html:
type: string
description: New HTML content for the block snippet
required:
- value_html
example:
name: Dog Fact of the Day
x-mcp:
enabled: true
operationId: putV4SnippetsById
x-operation-id-source: derived
components:
securitySchemes:
API_Key:
description: Authenticate API requests via an API Key
type: apiKey
in: header
name: X-Kit-Api-Key
OAuth2:
description: Authenticate API requests via an OAuth token
type: oauth2
flows:
authorizationCode:
authorizationUrl: https://api.kit.com/v4/oauth/authorize
tokenUrl: https://api.kit.com/v4/oauth/token
refreshUrl: https://api.kit.com/v4/oauth/token
scopes:
read: Read access to Kit API v4
write: Write access to Kit API v4
x-mint:
mcp:
enabled: true