ThingSpeak

ThingSpeak Update API

Write a single channel entry via `/update` or push high-volume telemetry via `/channels/{channel_id}/bulk_update.json` (CSV or JSON batches). The write surface is the workhorse of every ThingSpeak device — Arduino, ESP32, Raspberry Pi, Particle, and any HTTP-capable sensor node.

Documentation GitHub OpenAPI

Operations 2

GET /update Update Channel Feed (GET) #

POST /update Update Channel Feed (POST) #

Documentation

📖

Documentation

https://www.mathworks.com/help/thingspeak/writedata.html

📖

Documentation

https://www.mathworks.com/help/thingspeak/bulkwritejsondata.html

Specifications

⚙

OpenAPI

https://raw.githubusercontent.com/api-evangelist/thingspeak/refs/heads/main/openapi/thingspeak-update-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: ThingSpeak Channels Update API
  version: '1.0'
  description: Create, list, update, and delete ThingSpeak channels — the primary container for time-series IoT data. Requires a User API Key on the `THINGSPEAKAPIKEY` header.
  contact:
    name: MathWorks
    url: https://www.mathworks.com/help/thingspeak/channelsapi.html
servers:
- url: https://api.thingspeak.com
security:
- UserApiKeyHeader: []
tags:
- name: Update
paths:
  /update:
    get:
      summary: Update Channel Feed (GET)
      operationId: updateChannelFeedGet
      description: Write a single entry to a channel via query parameters. Returns the new entry_id (text) or the full entry (json/xml).
      parameters:
      - $ref: '#/components/parameters/ApiKeyQuery'
      - in: query
        name: field1
        schema:
          type: string
      - in: query
        name: field2
        schema:
          type: string
      - in: query
        name: field3
        schema:
          type: string
      - in: query
        name: field4
        schema:
          type: string
      - in: query
        name: field5
        schema:
          type: string
      - in: query
        name: field6
        schema:
          type: string
      - in: query
        name: field7
        schema:
          type: string
      - in: query
        name: field8
        schema:
          type: string
      - in: query
        name: lat
        schema:
          type: number
          format: double
      - in: query
        name: long
        schema:
          type: number
          format: double
      - in: query
        name: elevation
        schema:
          type: number
      - in: query
        name: status
        schema:
          type: string
      - in: query
        name: created_at
        schema:
          type: string
          format: date-time
      responses:
        '200':
          description: Entry written. Body is the new entry_id (text) or the entry object.
          content:
            text/plain:
              schema:
                type: string
            application/json:
              schema:
                $ref: '#/components/schemas/Entry'
        '400':
          description: Bad request — invalid parameters or duplicate timestamp.
      tags:
      - Update
    post:
      summary: Update Channel Feed (POST)
      operationId: updateChannelFeedPost
      description: Identical to GET /update but accepts form-encoded body. Preferred for write API keys that should not appear in URLs.
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/UpdateRequest'
      responses:
        '200':
          description: Entry written.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Entry'
      tags:
      - Update
components:
  schemas:
    UpdateRequest:
      type: object
      required:
      - api_key
      properties:
        api_key:
          type: string
        field1:
          type: string
        field2:
          type: string
        field3:
          type: string
        field4:
          type: string
        field5:
          type: string
        field6:
          type: string
        field7:
          type: string
        field8:
          type: string
        lat:
          type: number
        long:
          type: number
        elevation:
          type: number
        status:
          type: string
        created_at:
          type: string
          format: date-time
    Entry:
      type: object
      properties:
        channel_id:
          type: integer
        created_at:
          type: string
          format: date-time
        entry_id:
          type: integer
        field1:
          type: string
        field2:
          type: string
        field3:
          type: string
        field4:
          type: string
        field5:
          type: string
        field6:
          type: string
        field7:
          type: string
        field8:
          type: string
        latitude:
          type: number
        longitude:
          type: number
        elevation:
          type: number
        status:
          type: string
  parameters:
    ApiKeyQuery:
      in: query
      name: api_key
      required: true
      schema:
        type: string
  securitySchemes:
    UserApiKeyHeader:
      type: apiKey
      in: header
      name: THINGSPEAKAPIKEY