# \#microservice **URL:** https://community.cumulocity.com/tag/microservice/1490.md [Latest](https://community.cumulocity.com/latest.md) · [Categories](https://community.cumulocity.com/categories.md) · [Tags](https://community.cumulocity.com/tags.md) --- ## [Migrating your application to the Jackson 3 based Cumulocity Java SDK](https://community.cumulocity.com/t/migrating-your-application-to-the-jackson-3-based-cumulocity-java-sdk/15272)
**Author:** [@Robert\_Pretz](https://community.cumulocity.com/u/Robert_Pretz)\ **Replies:** 0\ **Last updated:** [October 29, 2026, 12:22pm UTC](https://community.cumulocity.com/t/migrating-your-application-to-the-jackson-3-based-cumulocity-java-sdk/15272 "2026-10-29T12:22:51Z")
This guide is for developers whose applications (microservices, agents, test suites) depend on packages of cumulocity-clients-java (the Cumulocity Java SDK with its modules ). The SDK has moved from Jackson 2 to Jacks… --- ## [Explore and Try Out APIs Directly in Cumulocity with the API Doc Application](https://community.cumulocity.com/t/explore-and-try-out-apis-directly-in-cumulocity-with-the-api-doc-application/15143)
**Author:** [@Harald\_Meyer](https://community.cumulocity.com/u/Harald_Meyer)\ **Replies:** 1\ **Last updated:** [August 27, 2026, 11:58am UTC](https://community.cumulocity.com/t/explore-and-try-out-apis-directly-in-cumulocity-with-the-api-doc-application/15143 "2026-08-27T11:58:48Z")
The new API Doc application brings API documentation directly into your Cumulocity tenant. It allows you to view the documentation of the Cumulocity Core API and of installed microservices, and to try out APIs using th… --- ## [Help needed: Analytics Builder custom block calling Cumulocity microservice](https://community.cumulocity.com/t/help-needed-analytics-builder-custom-block-calling-cumulocity-microservice/14448)
**Author:** [@Chanaka](https://community.cumulocity.com/u/Chanaka)\ **Replies:** 1\ **Last updated:** [April 2, 2026, 7:39am UTC](https://community.cumulocity.com/t/help-needed-analytics-builder-custom-block-calling-cumulocity-microservice/14448 "2026-04-02T07:39:20Z")
Hi everyone, I’m currently working on integrating a custom microservice with an Analytics Builder custom block in Cumulocity, and I would really appreciate some guidance or examples. :wrench: What I’m trying to achieve … --- ## [Getting Started with MQTT Service Cumulocity Integration](https://community.cumulocity.com/t/getting-started-with-mqtt-service-cumulocity-integration/14264)
**Author:** [@Stefan\_Witschel](https://community.cumulocity.com/u/Stefan_Witschel)\ **Replies:** 0\ **Last updated:** [March 19, 2026, 11:58am UTC](https://community.cumulocity.com/t/getting-started-with-mqtt-service-cumulocity-integration/14264 "2026-03-19T11:58:47Z")
Overview In the first part of this series, I explained how to get started with Cumulocity MQTT Service to connect devices. I’m summarizing the guide with a reference to tools like Dynamic Mapper and the possibility of … --- ## [Microservice Python SDK: Using Notifications2 to listen to all new device registration](https://community.cumulocity.com/t/microservice-python-sdk-using-notifications2-to-listen-to-all-new-device-registration/14210)
**Author:** [@emilio.abb](https://community.cumulocity.com/u/emilio.abb)\ **Replies:** 23\ **Last updated:** [January 30, 2026, 4:44pm UTC](https://community.cumulocity.com/t/microservice-python-sdk-using-notifications2-to-listen-to-all-new-device-registration/14210 "2026-01-30T16:44:51Z")
Hi there! We need to do some automatic actions whenever a new device gets registered, which we accomplish by listening to Notifications2 from a microservice. We were able to run it on our local test (with our admin user… --- ## [Introducing c8y-nitro: Modern JavaScript for Cumulocity Microservices](https://community.cumulocity.com/t/introducing-c8y-nitro-modern-javascript-for-cumulocity-microservices/14240)
**Author:** [@schplitt](https://community.cumulocity.com/u/schplitt)\ **Replies:** 0\ **Last updated:** [January 30, 2026, 12:40pm UTC](https://community.cumulocity.com/t/introducing-c8y-nitro-modern-javascript-for-cumulocity-microservices/14240 "2026-01-30T12:40:48Z")
Introducing c8y-nitro: Modern JavaScript for Cumulocity Microservices I’m excited to share c8y-nitro, a new framework for building Cumulocity IoT microservices with modern JavaScript and TypeScript. Built on the powerful… --- ## [Jump-Start your Cumulocity Microservice Project in Java - 2026 Edition](https://community.cumulocity.com/t/jump-start-your-cumulocity-microservice-project-in-java-2026-edition/14168)
**Author:** [@Alexander\_Pester](https://community.cumulocity.com/u/Alexander_Pester)\ **Replies:** 0\ **Last updated:** [January 9, 2026, 2:41pm UTC](https://community.cumulocity.com/t/jump-start-your-cumulocity-microservice-project-in-java-2026-edition/14168 "2026-01-09T14:41:59Z")
Introduction Four years ago, I introduced the cumulocity-microservice-archetype - a Maven archetype that helps developers quickly scaffold Cumulocity microservice projects. Since then, I’ve gathered feedback from the c… --- ## [Introducing mc8yp: An Open-Source MCP Server for Cumulocity IoT](https://community.cumulocity.com/t/introducing-mc8yp-an-open-source-mcp-server-for-cumulocity-iot/14140)
**Author:** [@schplitt](https://community.cumulocity.com/u/schplitt)\ **Replies:** 3\ **Last updated:** [December 19, 2025, 9:42am UTC](https://community.cumulocity.com/t/introducing-mc8yp-an-open-source-mcp-server-for-cumulocity-iot/14140 "2025-12-19T09:42:01Z")
Introducing mc8yp: An Open-Source MCP Server for Cumulocity IoT I’m excited to share mc8yp, an open-source Model Context Protocol (MCP) server that brings AI-powered capabilities to Cumulocity IoT. Now available on GitHu… --- ## [Cumulocity IoT Microservices - Monitoring through OTLP integration](https://community.cumulocity.com/t/cumulocity-iot-microservices-monitoring-through-otlp-integration/13619)
**Author:** [@Robert\_Pretz](https://community.cumulocity.com/u/Robert_Pretz)\ **Replies:** 0\ **Last updated:** [November 6, 2025, 1:52pm UTC](https://community.cumulocity.com/t/cumulocity-iot-microservices-monitoring-through-otlp-integration/13619 "2025-11-06T13:52:54Z")
Overview - current situation Cumulocity supports the deployment of custom logic through Kubernetes-based microservices. During development, developers can use a wide range of tools to analyze an application’s correctn… --- ## [Java MS SDK MicroserviceSettingsService vs Tenant Options](https://community.cumulocity.com/t/java-ms-sdk-microservicesettingsservice-vs-tenant-options/13613)
**Author:** [@Michael\_Voigt2](https://community.cumulocity.com/u/Michael_Voigt2)\ **Replies:** 2\ **Last updated:** [November 4, 2025, 2:11pm UTC](https://community.cumulocity.com/t/java-ms-sdk-microservicesettingsservice-vs-tenant-options/13613 "2025-11-04T14:11:21Z")
Hi guys, I need some help in understanding the behaviour of tenant options together with the MicroserviceSettingsService of the Java MS SDK (2025.78.0). If I define a setting in the settings array in the cumulocity.jso… --- ## [Microservice Best Practices: API-first design approach in the dawn of agentic AI](https://community.cumulocity.com/t/microservice-best-practices-api-first-design-approach-in-the-dawn-of-agentic-ai/7716)
**Author:** [@Alexander\_Pester](https://community.cumulocity.com/u/Alexander_Pester)\ **Replies:** 0\ **Last updated:** [October 15, 2025, 11:27am UTC](https://community.cumulocity.com/t/microservice-best-practices-api-first-design-approach-in-the-dawn-of-agentic-ai/7716 "2025-10-15T11:27:49Z")
Introduction I started this article almost two years ago and almost forgot about it to continue. Due to the incredible dawn of the agentic era in Software Engineering I decided to pick up it again and finish it. The or… --- ## [🤖 AI-enable existing Microservices by adding built-in MCP Server](https://community.cumulocity.com/t/ai-enable-existing-microservices-by-adding-built-in-mcp-server/12523)
**Author:** [@Stefan\_Witschel](https://community.cumulocity.com/u/Stefan_Witschel)\ **Replies:** 0\ **Last updated:** [September 19, 2025, 1:32pm UTC](https://community.cumulocity.com/t/ai-enable-existing-microservices-by-adding-built-in-mcp-server/12523 "2025-09-19T13:32:38Z")
Overview In this article, I will demonstrate how you can quickly extend your existing (or new) microservice, developed by using the Java Microservice SDK, with an MCP Server providing custom tools for your AI agent. M… --- ## [Removal of Microservice API Version 1 - Important Notice for Cumulocity Microservice Developers](https://community.cumulocity.com/t/removal-of-microservice-api-version-1-important-notice-for-cumulocity-microservice-developers/7895)
**Author:** [@Nick\_Ponomar1](https://community.cumulocity.com/u/Nick_Ponomar1)\ **Replies:** 0\ **Last updated:** [July 8, 2025, 2:57pm UTC](https://community.cumulocity.com/t/removal-of-microservice-api-version-1-important-notice-for-cumulocity-microservice-developers/7895 "2025-07-08T14:57:13Z")
Overview As previously announced in the Change Log, Microservice API version 1 is deprecated and scheduled for removal by March 1, 2025. After this date, you will no longer be able to upload or subscribe to microservices… --- ## [Microservice HA deployment using multiple availability zones](https://community.cumulocity.com/t/microservice-ha-deployment-using-multiple-availability-zones/12342)
**Author:** [@Eric\_Sander](https://community.cumulocity.com/u/Eric_Sander)\ **Replies:** 4\ **Last updated:** [June 10, 2025, 2:32pm UTC](https://community.cumulocity.com/t/microservice-ha-deployment-using-multiple-availability-zones/12342 "2025-06-10T14:32:47Z")
Hi all, I received the question if if is possible to deploy a custom microservice in a way, that it runs highly available in multiple hyperscaler availability zones. From my knowledge, the standard deployment uses only … --- ## [Python Microservice](https://community.cumulocity.com/t/python-microservice/12155)
**Author:** [@bdm](https://community.cumulocity.com/u/bdm)\ **Replies:** 3\ **Last updated:** [April 15, 2025, 1:16pm UTC](https://community.cumulocity.com/t/python-microservice/12155 "2025-04-15T13:16:50Z")
Hi, we have a python microservice handling the MQTT integration between the devices and Cumulocity, Part of this python code is to receive the external ID from the device and to ask cumulocity API for its corresponding … --- ## [Cumulocity Quarterly Product Webinar - April 10](https://community.cumulocity.com/t/cumulocity-quarterly-product-webinar-april-10/12068)
**Author:** [@Alex\_Grawe](https://community.cumulocity.com/u/Alex_Grawe)\ **Replies:** 0\ **Last updated:** [March 25, 2025, 8:29am UTC](https://community.cumulocity.com/t/cumulocity-quarterly-product-webinar-april-10/12068 "2025-03-25T08:29:13Z")
Register for our next Cumulocity Quarterly Product Webinar Join us on April 10 for an interactive discussion on the latest innovations within the Cumulocity platform! You can register for the webinar here. The Cumuloc… --- ## [Communication between Backend and Frontend via Microservice](https://community.cumulocity.com/t/communication-between-backend-and-frontend-via-microservice/12035)
**Author:** [@AleDegraDac](https://community.cumulocity.com/u/AleDegraDac)\ **Replies:** 5\ **Last updated:** [March 20, 2025, 9:26am UTC](https://community.cumulocity.com/t/communication-between-backend-and-frontend-via-microservice/12035 "2025-03-20T09:26:02Z")
Hi all, I’m working on a Cumulocity setup where I have a microservice that handles communication between frontend, and my application. Pushing updates from the application to the frontend through the microservice and vi… --- ## [WebHooks and Generic HTTP Processing powered by Dynamic Mapper](https://community.cumulocity.com/t/webhooks-and-generic-http-processing-powered-by-dynamic-mapper/8016)
**Author:** [@Stefan\_Witschel](https://community.cumulocity.com/u/Stefan_Witschel)\ **Replies:** 0\ **Last updated:** [February 18, 2025, 3:42pm UTC](https://community.cumulocity.com/t/webhooks-and-generic-http-processing-powered-by-dynamic-mapper/8016 "2025-02-18T15:42:04Z")
Overview Cumulocity provides a REST API that expects data in a specific format, our so-called Domain Model: As usual, not all devices support this domain model out of the box, so some mapping is needed to map the d… --- ## [Cumulocity Microservice not resolving external system host](https://community.cumulocity.com/t/cumulocity-microservice-not-resolving-external-system-host/8017)
**Author:** [@davidelh](https://community.cumulocity.com/u/davidelh)\ **Replies:** 1\ **Last updated:** [February 18, 2025, 11:40am UTC](https://community.cumulocity.com/t/cumulocity-microservice-not-resolving-external-system-host/8017 "2025-02-18T11:40:28Z")
Hi all, I have a problem with a custom Cumulocity microservice written in Python. In the microservice script, I am calling an external REST API endpoint (using Python’s requests library). I receive an error from the mi… --- ## [Fragment type of measurements / events](https://community.cumulocity.com/t/fragment-type-of-measurements-events/7980)
**Author:** [@Matthias.Burkert](https://community.cumulocity.com/u/Matthias.Burkert)\ **Replies:** 4\ **Last updated:** [February 7, 2025, 9:22am UTC](https://community.cumulocity.com/t/fragment-type-of-measurements-events/7980 "2025-02-07T09:22:24Z")
Hello Tech Community Team, my Question would be: is there a kind of rest call for measurement/eventapi, where I can simply get all possible fragment types within a time window ? This would be extremely helpful to redu… --- ## [Websocket with Springboot Microservice giving 403 access denied](https://community.cumulocity.com/t/websocket-with-springboot-microservice-giving-403-access-denied/7948)
**Author:** [@vikash\_singh6](https://community.cumulocity.com/u/vikash_singh6)\ **Replies:** 5\ **Last updated:** [January 24, 2025, 3:35pm UTC](https://community.cumulocity.com/t/websocket-with-springboot-microservice-giving-403-access-denied/7948 "2025-01-24T15:35:00Z")
I am developing a api for websocket using SpringBoot and when i am trying to access or connecting websocket using Angular its always giving 403 Forbidden.But same api example http://localhost:8080/ws … --- ## [Not able to fetch data with microservice](https://community.cumulocity.com/t/not-able-to-fetch-data-with-microservice/7916)
**Author:** [@mehrasamanyu1](https://community.cumulocity.com/u/mehrasamanyu1)\ **Replies:** 7\ **Last updated:** [January 14, 2025, 9:25am UTC](https://community.cumulocity.com/t/not-able-to-fetch-data-with-microservice/7916 "2025-01-14T09:25:07Z")
Hi, I am using Cumulocity IoT Production and in that I have a management tenant and I have subscribed 1 tenant on that. When i am trying to get series measurements from this tenant on my postman, i am able to see the dat… --- ## [Maven build fails for notification2-example](https://community.cumulocity.com/t/maven-build-fails-for-notification2-example/3746)
**Author:** [@showa](https://community.cumulocity.com/u/showa)\ **Replies:** 2\ **Last updated:** [December 13, 2024, 4:22am UTC](https://community.cumulocity.com/t/maven-build-fails-for-notification2-example/3746 "2024-12-13T04:22:44Z")
Product/components used and version/fix level: Maven: 3.9.9 JDK: 17.0.13 Cumulocity-IoT frontend: 1018.0.259, backend: 1018.0.405 I am trying with the help of the article on Cumulocity’s javaSDK for Microservice and g… --- ## [C8Y Microservice Python User-Session issues](https://community.cumulocity.com/t/c8y-microservice-python-user-session-issues/5562)
**Author:** [@wilbers](https://community.cumulocity.com/u/wilbers)\ **Replies:** 14\ **Last updated:** [October 17, 2024, 8:11am UTC](https://community.cumulocity.com/t/c8y-microservice-python-user-session-issues/5562 "2024-10-17T08:11:08Z")
Detailed explanation of the problem: I currently need to integrate Microservice Role permissions and Device permissions checks. Since I use the C8Y-Python API, here is an example import c8y\_api.app import c8y\_api.model… --- ## [Microservice: scheme http is invalid](https://community.cumulocity.com/t/microservice-scheme-http-is-invalid/3605)
**Author:** [@kristopher.takken](https://community.cumulocity.com/u/kristopher.takken)\ **Replies:** 3\ **Last updated:** [October 10, 2024, 10:26am UTC](https://community.cumulocity.com/t/microservice-scheme-http-is-invalid/3605 "2024-10-10T10:26:12Z")
Microservice Issue I am creating a micrservice in python flask. I have successfully deployed one in the past using the same code with different topic names. {'subscription\_url': 'http://cumulocity:8111/notification2/su… --- ## [How to send data from a device to microservice via MQTT communication?](https://community.cumulocity.com/t/how-to-send-data-from-a-device-to-microservice-via-mqtt-communication/2093)
**Author:** [@yamashita](https://community.cumulocity.com/u/yamashita)\ **Replies:** 4\ **Last updated:** [September 2, 2024, 9:50am UTC](https://community.cumulocity.com/t/how-to-send-data-from-a-device-to-microservice-via-mqtt-communication/2093 "2024-09-02T09:50:45Z")
I would like to receive data from existing IoT devices on Cumulocity’s microservice. Existing IoT devices communicate via MQTT and have their own data structure. It is difficult to change the specifications of existing … --- ## [Microservice entrypoint.sh not found](https://community.cumulocity.com/t/microservice-entrypoint-sh-not-found/4207)
**Author:** [@David.Richter](https://community.cumulocity.com/u/David.Richter)\ **Replies:** 3\ **Last updated:** [September 13, 2024, 3:52pm UTC](https://community.cumulocity.com/t/microservice-entrypoint-sh-not-found/4207 "2024-09-13T15:52:29Z")
I have a microservice that use JDBC. After many discussion here Add JDBC driver to image build - #13 by Robert\_Neale I make it running. For this I need a docker file: FROM openjdk:17-jdk-slim COPY etc/ /etc/service-requ… --- ## [C8Y Microservice | Python Flask | Authentication issues](https://community.cumulocity.com/t/c8y-microservice-python-flask-authentication-issues/2493)
**Author:** [@kristopher.takken](https://community.cumulocity.com/u/kristopher.takken)\ **Replies:** 2\ **Last updated:** [September 5, 2024, 7:36am UTC](https://community.cumulocity.com/t/c8y-microservice-python-flask-authentication-issues/2493 "2024-09-05T07:36:44Z")
Problem Statement I have tried multiple authentication methos within my Microservice with mixed results. For Subscriptions I can get it to work with Auth in the header (base64 encoded) requests.post(subscription\_url, … --- ## [Add JDBC driver to image build](https://community.cumulocity.com/t/add-jdbc-driver-to-image-build/3896)
**Author:** [@David.Richter](https://community.cumulocity.com/u/David.Richter)\ **Replies:** 15\ **Last updated:** [July 26, 2024, 11:47am UTC](https://community.cumulocity.com/t/add-jdbc-driver-to-image-build/3896 "2024-07-26T11:47:13Z")
In this topic JDBC Connection to DataHub I established a JDBC connection to dremio. For this I downloaded a jdbc driver. Now my microservice is ready to get deplyed. When I do this I get error messages that say it could… --- ## [Error uploading microservice: "Config file does not .json extension."](https://community.cumulocity.com/t/error-uploading-microservice-config-file-does-not-json-extension/5935)
**Author:** [@David.Richter](https://community.cumulocity.com/u/David.Richter)\ **Replies:** 7\ **Last updated:** [July 22, 2024, 1:25pm UTC](https://community.cumulocity.com/t/error-uploading-microservice-config-file-does-not-json-extension/5935 "2024-07-22T13:25:25Z")
Hi, I’m not able to deploy my microservice. All the time I try I get this error message. I have the feeling that have something todo with the cumulocity.json. The file has the ending json and looks like this: { "… [Next page](https://community.cumulocity.com/tag/microservice/1490.md?match_all_tags=true&page=1&tags%5B%5D=microservice)