Complete this list before you request quotes. Comparable briefs make API Development proposals for Beauty & Salons easier to score and keep discovery from turning into unpaid consulting. If an item is unknown mark it explicitly because hidden assumptions are what create change orders later.

• Languages locales and branding assets
• Success metrics for the first 90 days
• Hosting preferences and support model
• Security and compliance constraints
• Primary users and stakeholders named
• Must have workflows written as steps
• Data retention and access rules

Example for Beauty & Salons: a user completes the core job receives a confirmation and recovers from an error without calling support. Turn stories like that into pass or fail checks per milestone and share them with every vendor. Teams that refuse measurable acceptance criteria are rarely ready for production API Development delivery.

Match each checklist item to the product shape you want. That mapping keeps scope honest when stakeholders add wish list features mid project.

• Payment gateway integration
• Webhook systems
• API documentation and SDK
• API versioning and migration
• REST API development
• Salon Websites
• Appointment Apps
• Loyalty & Rewards
• AI Style Assistant

Hand over brand files environment access sample data and decision makers. Missing assets inflate API Development timelines for Beauty & Salons more than missing features because builders sit idle waiting for answers from a named product owner.

• Logo fonts and UI references
• Staging credentials and API keys
• Sample records for migration
• Named product owner for weekly reviews

We convert the checklist into a milestone plan with private chat and a live dashboard. You approve each stage before the next Payoneer invoice and keep ownership of delivered work.