## Always Provide a Client Key
The Client Key is the Persistent ID as defined by Pulse’s Console. Pulse uses the Client Key to collect data & feed information back into your CRM.
{% hint style="info" %}
A Persistent ID is an identifier that can provide a single view of an individual across numerous devices — across desktop, mobile web, and in-app, without duplication. It’s a piece of data that is unique to the user that doesn’t change from session to session, or from one device or channel to another. This is usually an ID that is found in a CRM.
{% endhint %}
## Create a Golden CRM of 5 Questions
A golden CRM record is a set of key data points (preferences, customer data, enrollments) that will enable you to provide highly relevant marketing and service to your prospects & customers.
{% hint style="success" %}
**Here is an example strategy:**
Learn about product preferences & hone outreach to meet client preferences by asking the following 5 questions:
* How would you like us to contact you?
* How often would you like to be contacted?
* What products do you use?
* What products would you like to hear about?
* Do you want to learn about new features for existing products?
{% endhint %}
---
# 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.pulseinsights.com/best-practices/best-practices/best-practices-for-progressive-profiling.md?ask=
```
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.