Custom Connector Builder

Build a production-ready GPT prompt for Power Platform connector C# scripts. The generated prompt includes a full 5-step code example and your processing rules.

  • .NET Standard 2.0 compatible
  • Strict 5-step C# structure
  • Auto-generated C# baseline example

Three steps. One prompt-first workflow.

Capture your value contract, describe processing behavior, and generate a reusable prompt.

  1. 1

    Define fields

    Set incoming and outgoing values for your connector response contract.

  2. 2

    Describe processing

    Explain exactly how incoming values should be transformed before output.

  3. 3

    Generate prompt

    Copy the generated prompt with a full 5-step C# baseline example built in.

Prompt Builder for Custom Connector C#

Use this to generate a C# policy prompt that always includes the full 5-step structure and a built-out baseline code sample.

Prompt Inputs

Select a pre-designed pattern to instantly configure the inputs for demonstration.


The domain name of the API endpoint. Do not include schemes (https://) or paths.

Describe transformation logic, validation rules, formatting, and any fallback behavior.

Include representative sample input so the generated C# can target real payload structure.

Generated Prompt


          

Sample Connectors

Explore production-ready custom connector designs. Each includes a detailed architectural breakdown, OpenAPI Swagger 2.0 configuration, complete C# custom policy code, and an interactive live sandbox to test-drive their logic.

Connector Title

Connector Description

Ian Tweedie

Built by TechTweedie

Custom Connector Builder is a free tool created by Ian Tweedie — also known online as TechTweedie. Ian is a technology consultant and developer based in North East England with a background in enterprise IT, cloud infrastructure, and developer tooling. He builds free, practical tools and writes about technology on his blog.