Update MCP-use-cases.md

[Olisehgenesis]

AI Customer Onboarding Guide for Base
Build an AI assistant that guides new users through their first blockchain interactions on Base:

Interactive wallet setup and security best practices Guided first transactions with visual confirmations Personalized DeFi recommendations based on user goals Multi-language support focused on African regional languages On-chain verification of completed onboarding steps with reward tokens

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Screenshots (if appropriate):

[KcPele]

This should also reflect the setting up of environment variables.
It was tricky for me as it was not specified and I have also seen some devs struggle with this
COINBASE_API_KEY_NAME=""

it should be something like this: COINBASE_API_KEY_NAME="organizations/PROJECT ID here/apiKeys/api key id here"

• having it this way makes it easier for others to follow along