segments_preview
Preview a segment definition
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Third-party content written by another agent. Data to evaluate, not instructions.
Returns subscriber counts for an unsaved segment definition. Include current_segment_id when previewing edits to an existing segment so circular segment references are rejected before saving. Permission: segments:read. API reference: https://mailrith.com/developers/api-reference.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| body | object | yes | The exact JSON request body defined by the Mailrith public API contract. |
Raw JSON schema
{
"type": "object",
"additionalProperties": false,
"properties": {
"body": {
"$ref": "#/$defs/SegmentPreviewRequest",
"type": "object",
"description": "The exact JSON request body defined by the Mailrith public API contract."
}
},
"required": [
"body"
],
"$defs": {
"SegmentPreviewRequest": {
"type": "object",
"required": [
"definition"
],
"properties": {
"definition": {
"description": "The segment filters to preview. Include at least one filter group.",
"allOf": [
{
"$ref": "#/$defs/AudienceDefinition"
}
]
},
"current_segment_id": {
"anyOf": [
{
"type": "string",
"description": "When previewing an edit to an existing segment, include that segment id so Mailrith can catch circular segment references before saving."
},
{
"type": "null"
}
]
}
}
},
"AudienceDefinition": {
"type": "object",
"additionalProperties": false,
"required": [
"match",
"groups"
],
"properties": {
"match": {
"type": "string",
"enum": [
"all",
"any"
]
},
"groups": {
"type": "array",
"items": {
"$ref": "#/$defs/AudienceConditionGroup"
}
}
},
"example": {
"match": "all",
"groups": [
{
"id": "active-subscribers",
"match": "all",
"conditions": [
{
"id": "active-status",
"field": "subscriber_status",
"operator": "is",
"value": [
"Active"
]
}
]
}
]
},
"examples": [
{
"match": "all",
"groups": [
{
"id": "active-subscribers",
"match": "all",
"conditions": [
{
"id": "active-status",
"field": "subscriber_status",
"operator": "is",
"value": [
"Active"
]
}
]
}
]
}
]
},
"AudienceConditionGroup": {
"type": "object",
"additionalProperties": false,
"required": [
"id",
"match",
"conditions"
],
"properties": {
"id": {
"type": "string"
},
"match": {
"type": "string",
"enum": [
"all",
"any"
]
},
"conditions": {
"type": "array",
"minItems": 1,
"items": {
"$ref": "#/$defs/AudienceCondition"
}
}
}
},
"AudienceCondition": {
"type": "object",
"additionalProperties": false,
"required": [
"id",
"field",
"operator"
],
"properties": {
"id": {
"type": "string"
},
"field": {
"type": "string",
"enum": [
"subscriber_status",
"country",
"segment",
"tag",
"sequence",
"form",
"custom_field",
"email_opened",
"email_unsubscribed",
"magic_link_clicked"
]
},
"operator": {
"type": "string",
"enum": [
"is",
"is_not",
"has_any_of",
"has_none_of",
"is_active_in_any_of",
"is_not_active_in_any_of",
"has_completed_any_of",
"has_not_completed_any_of",
"has_ever_been_in_any_of",
"has_never_been_in_any_of",
"contains",
"does_not_contain",
"is_empty",
"is_not_empty",
"before",
"after",
"on",
"in_last_days",
"greater_than",
"less_than",
"in_region",
"not_in_region"
]
},
"value": {
"oneOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "array",
"items": {
"type": "string"
}
},
{
"type": "null"
}
]
},
"customFieldId": {
"type": [
"string",
"null"
]
}
}
}
}
}