# Developer API

Developer APIs empower any developer or team to build custom solutions and integrations. IS-Messenger’s Developer API allows users to take advantage of many core features in IS-Messenger, including automating messages, syncing CRMs and triggering Workflows.

### Getting Started <a href="#getting_started" id="getting_started"></a>

Developer API is only available for Business Plan and above.

**Step 1: Navigate to Integrations in Workspace Settings.**

From the **Settings** Module, navigate to the menu item, **Integrations**.

**Step 2: Navigate to Developer API**

From the list, search for Developer API and press **Edit**.

**Step 3: Add Access Token**

Press **Add Access Token** to add a new access token. This token is needed to access our API endpoints.

<figure><img src="/files/Dzj5O8SLNPQDnIk9A3vE" alt="gif showing how to use respond.io developer API"><figcaption></figcaption></figure>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.is-messenger.com/ismessenger/workspace-setting/integrations/developer-api.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.