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OpenAPI Specification

openapi: 3.2.0
info:
  title: Localytics Transactional Push Meta API
  version: 2.0.0
  description: 'Programmatic push messaging delivery. Submit a batch of pushes for an application; messages are forwarded to push-segmenter (for audience/profile/broadcast targeting) or message-delivery (for customer_id targeting).


    ## Per-message labels (all target types)


    Each entry in `messages` may carry its own labels (same `label1`..`label10`, string-valued rules as the top-level `labels`). Per-message labels are **merged with** the top-level `labels`, and per-message keys **win on conflict**.


    Two equivalent shapes are accepted on each message:


    1. **Flat**: `labelN` fields directly on the message — `{ "target": "u1", "alert": "...", "label1": "rec-1" }`

    2. **Nested**: a `labels` object on the message — `{ "target": "u1", "alert": "...", "labels": { "label1": "rec-1" } }`


    A single message may use one shape or the other, but **not both** — mixing returns HTTP 400.


    For `target_type: customer_id` this lets a caller bundle many distinct pushes into a single API call while still tagging each push with its own unique identifier (for example, an AI-generated request id), which is useful for time-window deliveries where the per-call rate limit would otherwise be a blocker. For `audience_id`, `profile`, and `broadcast` (which only allow a single message per batch) the per-message shape simply provides another spot to attach labels alongside the top-level `labels`.


    Note: `audience_id`, `profile`, and `broadcast` still allow only one message per batch — the per-message labels feature does not change that constraint.'
servers:
- url: /
  description: This service
security:
- basicAuth: []
tags:
- name: meta
  description: Health and documentation endpoints
paths:
  /:
    get:
      tags:
      - meta
      summary: Health check
      security: []
      responses:
        '200':
          description: Service is up
          content:
            application/json:
              schema:
                type: object
                properties:
                  ok:
                    type: boolean
  /v1/test:
    post:
      tags:
      - meta
      summary: Liveness ping
      security: []
      responses:
        '200':
          description: pong
          content:
            text/plain:
              schema:
                type: string
                example: pong
  /swagger.json:
    get:
      tags:
      - meta
      summary: This OpenAPI document
      security: []
      responses:
        '200':
          description: OpenAPI 3.0 JSON document
          content:
            application/json: {}
  /docs:
    get:
      tags:
      - meta
      summary: Interactive Swagger UI documentation
      security: []
      responses:
        '200':
          description: HTML page rendering Swagger UI against /swagger.json
          content:
            text/html: {}
components:
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic with `api_key:api_secret`.