> ## Documentation Index > Fetch the complete documentation index at: https://docs.useboom.ai/llms.txt > Use this file to discover all available pages before exploring further. # Get the segment filter catalog > Everything filterable in your organization — person attributes, related data, and computed variables — with the token and operators to use for each. Read this first when building a filter. ## OpenAPI ````yaml /api-reference/openapi.json get /api/v1/segments/catalog openapi: 3.1.0 info: title: Boom API version: 1.0.0 description: >- Boom's public REST API — one uniform surface over every platform capability. CDP: upsert people and custom objects, define object and relationship types, link and unlink relationships, and record behavioral events — one record per request or up to 1000 per request via the `/batch` endpoints. Segments: read (list, read, membership) and full authoring — discover the filterable catalog, validate a filter, create and update segments, preview match counts, and trigger evaluation. Initiatives: create and configure outreach initiatives, link WhatsApp templates, drive the lifecycle (launch, cancel, archive), and read collected-data summaries. Participants: enroll people into an active initiative, track their status, read conversation transcripts, and stop outreach. Journeys: read-only access to always-on message flows and their metrics. WhatsApp templates: list your WhatsApp numbers and list, read, and create message templates. The same capabilities are exposed as MCP tools with identical schemas. servers: - url: https://www.useboom.ai description: Production - url: https://dev.useboom.ai description: Development (sandbox — use a development organization API key) security: - bearerAuth: [] paths: /api/v1/segments/catalog: get: tags: - Segments summary: Get the segment filter catalog description: >- Everything filterable in your organization — person attributes, related data, and computed variables — with the token and operators to use for each. Read this first when building a filter. operationId: segments_catalog responses: '200': description: Success content: application/json: schema: $schema: https://json-schema.org/draft/2020-12/schema type: object properties: personAttributes: type: array items: type: object properties: attr: type: string description: >- The exact token to place in a predicate's `attr` field. type: type: string enum: - STRING - NUMBER - BOOLEAN - DATE - JSON - ARRAY operators: type: array items: type: string description: >- Operators valid for this type. Empty for JSON/ARRAY containers — drill into a leaf with `path` first. description: anyOf: - type: string - type: 'null' required: - attr - type - operators - description additionalProperties: false description: Person columns and custom person attributes. computedVariables: type: array items: type: object properties: attr: type: string description: >- The exact token to place in a predicate's `attr` field. type: type: string enum: - STRING - NUMBER - BOOLEAN - DATE - JSON - ARRAY operators: type: array items: type: string description: >- Operators valid for this type. Empty for JSON/ARRAY containers — drill into a leaf with `path` first. description: anyOf: - type: string - type: 'null' label: type: string description: Human-readable label. group: anyOf: - type: string - type: 'null' description: Grouping label for display. required: - attr - type - operators - description - label - group additionalProperties: false customObjectTypes: type: array items: type: object properties: name: type: string displayName: anyOf: - type: string - type: 'null' attributes: type: array items: type: object properties: attr: type: string description: >- The exact token to place in a predicate's `attr` field. type: type: string enum: - STRING - NUMBER - BOOLEAN - DATE - JSON - ARRAY operators: type: array items: type: string description: >- Operators valid for this type. Empty for JSON/ARRAY containers — drill into a leaf with `path` first. description: anyOf: - type: string - type: 'null' required: - attr - type - operators - description additionalProperties: false required: - name - displayName - attributes additionalProperties: false reachableObjects: type: array items: type: object properties: typeName: type: string paths: type: array items: type: array items: type: object properties: customObjectType: type: string direction: type: string enum: - parent_to_child - child_to_parent relationshipType: type: string attributeFilters: type: array items: {} description: >- Conditions on this hop, in the same shape as a `has_relationship` `attributeFilters` entry. required: - customObjectType - attributeFilters additionalProperties: false required: - typeName - paths additionalProperties: false description: >- A related-data type reachable from a person, with every distinct hop-path to it. Use one of the paths as a `has_relationship` predicate `path`. operatorReference: type: array items: type: object properties: operator: type: string takesValue: type: boolean description: Whether the operator expects a `value`. valueShape: type: string enum: - none - scalar - list - date - dateRange - relativeWindow - dateOffset description: The shape the operator's `value` must take. description: type: string required: - operator - takesValue - valueShape - description additionalProperties: false required: - personAttributes - computedVariables - customObjectTypes - reachableObjects - operatorReference additionalProperties: false '400': description: Validation failed or the request cannot proceed. content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error '401': description: Missing, malformed, or revoked API key. content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error '404': description: The resource does not exist in this organization. content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error '409': description: >- Conflicts with the current state (duplicates, wrong lifecycle state). content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error '422': description: The request is well-formed but semantically invalid. content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error '429': description: Rate limit exceeded — retry after `Retry-After`. content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error '500': description: Internal server error. content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error '503': description: Transient error — retry with a narrower request. content: application/json: schema: type: object properties: error: type: object properties: code: type: string description: Stable machine-readable error code (snake_case). message: type: string required: - code - message required: - error components: securitySchemes: bearerAuth: type: http scheme: bearer description: 'Organization API key, sent as `Authorization: Bearer boom_org_...`.' ````