QuestDB Write API

openapi: 3.1.0
info:
  title: QuestDB HTTP REST Chk Write API
  version: 1.0.0
  description: HTTP REST endpoints exposed by QuestDB on the default HTTP port (9000) for SQL execution, CSV import/export, table existence checks, runtime metrics, and the InfluxDB Line Protocol HTTP ingestion endpoint. Authentication is unauthenticated by default in the open-source build; QuestDB Enterprise supports HTTP Basic Authentication and TLS.
  contact:
    name: QuestDB Documentation
    url: https://questdb.com/docs/
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://{host}:{port}
  description: QuestDB HTTP server
  variables:
    host:
      default: localhost
      description: QuestDB host
    port:
      default: '9000'
      description: QuestDB HTTP port
security:
- {}
- basicAuth: []
tags:
- name: Write
paths:
  /write:
    post:
      summary: Ingest data via InfluxDB Line Protocol over HTTP
      description: Accepts InfluxDB Line Protocol payloads for high-throughput time-series ingestion. Served on the same HTTP port as the REST API.
      operationId: ilpWrite
      parameters:
      - name: precision
        in: query
        required: false
        description: Timestamp precision (n, u, ms, s).
        schema:
          type: string
          enum:
          - n
          - u
          - ms
          - s
      requestBody:
        required: true
        content:
          text/plain:
            schema:
              type: string
              description: Newline-delimited InfluxDB Line Protocol records.
      responses:
        '204':
          description: Ingestion accepted.
        '400':
          description: Malformed line protocol payload.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      tags:
      - Write
components:
  schemas:
    Error:
      type: object
      properties:
        query:
          type: string
        error:
          type: string
        position:
          type: integer
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Authentication (QuestDB Enterprise).