Signup Flow Smart

A Claude Code skill for optimizing signup and registration flows to reduce friction, increase completion rates, and set users up for successful activation. Covers form design, progressive profiling, social login, and post-signup onboarding transitions.

When to Use This Skill

Choose Signup Flow Smart when:

• Your signup-to-activation conversion rate needs improvement
• You're designing a new registration flow from scratch
• You want to reduce form abandonment rates
• You need to decide between email signup, social login, or SSO
• You want to implement progressive profiling instead of a long form

Consider alternatives when:

• You need to optimize the post-signup onboarding (use an onboarding CRO skill)
• You want pricing page optimization (use a pricing strategy skill)
• You need landing page conversion optimization (use a page CRO skill)

Quick Start

Copy
# Install the skill
claude install signup-flow-smart

# Audit your current signup flow
claude "Audit our signup flow: email → password → company name → role → team size → use case → verify email. We see 45% drop-off."

# Design a minimal signup
claude "Design a signup flow for a developer tool where we need email, password, and primary programming language"

# Add social login
claude "Should we add Google and GitHub login to our SaaS signup? What are the trade-offs?"

Core Concepts

Signup Flow Patterns

Pattern	Description	Best For
Minimal (email only)	Just email or email + password	Maximum conversion, developer tools
Social Login	Google, GitHub, or Apple sign-in	Consumer apps, developer tools
Progressive	Minimal signup, gather info over time	Products needing profile data
SSO/SAML	Enterprise single sign-on	B2B enterprise products
Magic Link	Passwordless email login	Low-friction, modern UX
Invite-Only	Signup requires invitation code	Exclusive/beta products

Form Field Impact on Conversion

Each additional field reduces conversion by 10-15%:

Email only: ~90% completion
Email + password: ~80% completion
+ Name: ~70% completion
+ Company: ~60% completion
+ Phone: ~50% completion
+ Address: ~40% completion

Rule: Only ask for what you absolutely need at signup.
Everything else can wait until later.

Post-Signup Transition

Step	Goal	Metric
Welcome Screen	Confirm successful signup	Viewed %
Qualifying Question	Segment user for personalized path	Completion %
First Value Action	Get user to core feature ASAP	Time-to-first-action
Verification	Email confirm (delay if possible)	Verification rate

Configuration

Parameter	Type	Default	Description
signup_type	string	"email_password"	Type: email_only, email_password, social, magic_link, sso
required_fields	string[]	["email"]	Minimum required fields at signup
social_providers	string[]	[]	Social login providers: google, github, apple, microsoft
email_verification	string	"delayed"	Verification: immediate, delayed, none
progressive_profiling	boolean	true	Gather additional info after signup

Best Practices

1. Delay email verification — Let users into the product immediately after signup. Send the verification email in the background and only require it before sensitive actions (billing, inviting team members). Gating everything behind verification loses users who get distracted checking email.

2. Offer social login alongside email — Google sign-in reduces signup friction significantly for consumer and B2B products. GitHub login is essential for developer tools. Always keep email signup as a fallback for users who prefer it.

3. Ask "why" after signup, not during — Qualifying questions (role, company size, use case) are valuable for personalization but deadly for conversion when placed in the signup form. Show them as the first step after successful account creation.

4. Use password requirements wisely — Minimum 8 characters is sufficient. Don't require uppercase, special characters, and numbers simultaneously — it frustrates users without significantly improving security. Consider offering a password strength meter instead.

5. Mobile-first form design — Over 40% of signups happen on mobile. Use large touch targets, single-column layout, appropriate input types (type="email"), and auto-fill support. Test your signup flow on a phone.

Common Issues

High signup starts but low completion — Too many fields or unclear value proposition. Reduce to email + password only, and make the benefit of signing up crystal clear above the form. Show what users will get access to.

Social login creates duplicate accounts — Users forget which method they used and create a second account. Implement account linking: if an email from social login matches an existing account, merge them or prompt the user to link accounts.

Low email verification rates — Users forget or can't find the email. Send the verification email immediately (within 10 seconds), use a clear subject line, and allow resending. Show a prominent "check your email" screen with a resend button.