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Overview

Postman Echo is a public HTTP echo service. Use this client-mode REST_API connector to prove MQTT-to-HTTP wiring (methods, path placeholders, headers, cookies, status codes, and response topics) without an API key.
Public GET /get does not need a token. The template still sends Authorization: Bearer {value.json.api_token} so the header pattern matches other apps. Leave api_token empty for demos, or drop that header.

Basic Syntax

Events

Auth

None required. Base address is https://postman-echo.com. Optional Bearer token is a placeholder only. Prefer GET SECRET if you later point the connector at a private echo. Never commit real tokens.

Try it

  1. Add the connector on a lab broker (-addRoute with the LoT above).
  2. Publish {} to integrations/postman-echo/request/Get.
  3. Subscribe to integrations/postman-echo/response/Get. Postman Echo echoes the request as JSON.
  4. Status check: publish {"code":"200"} to integrations/postman-echo/request/Statuscode.
  5. POST/PUT: publish a JSON body to integrations/postman-echo/request/Post or .../Put. The connector sends it as {payload}.
Direct HTTP check: GET https://postman-echo.com/get returns HTTP 200. A broker MQTT round-trip was not run for this template.
Last modified on October 21, 2026