signup Skill for Claude: Optimize Signup and Registration Flows

Makes Claude audit and redesign your signup flow field by field to cut drop-off and lift completions.

Installs: 75.2K; on skills.sh
Stars: 57.9K; on GitHub
Files: 1; besides SKILL.md
Updated: Oct 2026; last repo commit

signup makes Claude act as a signup-flow conversion expert. It checks each field, the number of steps, trust cues, mobile layout and the experience after submit, then lists fixes ranked by effort.

It triggers on signup conversions, registration friction, trial signup and account creation. It returns audit findings, recommended changes, or a form redesign if you ask. The folder bundles an evals file and no scripts.

Good for

Founders whose signup form loses visitors
Growth marketers running signup or trial experiments
Designers deciding between a single-step and a multi-step form

Install signup

Claude Code

Copy this prompt.

Install the signup skill in Claude Code. Run this command:

npx skills add https://github.com/coreyhaines31/marketingskills --skill signup

Then check that it loaded and tell me how to use it.

2
Paste it into Claude Code. It shows the change and asks before running it.

Requires Node.js.

From its listing on skills.sh. Source.

What's in the skill

When it loads

When the user wants to optimize signup, registration, account creation, or trial activation flows. Also use when the user mentions "signup conversions," "registration friction," "signup form optimization," "free trial signup," "reduce signup dropoff," "account creation flow," "people aren't signing up," "signup abandonment," "trial conversion rate," "nobody completes registration," "too many steps to sign up," or "simplify our signup." Use this whenever the user has a signup or registration flow that isn't performing. For post-signup onboarding, see onboarding. For lead capture forms (not account creation), see cro.

Sections in SKILL.md

Initial Assessment
Core Principles
1. Minimize Required Fields
2. Show Value Before Asking for Commitment
3. Reduce Perceived Effort
4. Remove Uncertainty
Field-by-Field Optimization
Email Field
Password Field
Name Field
Social Auth Options
Phone Number
Company/Organization
Use Case / Role Questions
Single-Step vs. Multi-Step
Single-Step Works When:

Key facts

Author: Corey Haines (coreyhaines31)
Repo: coreyhaines31/marketingskills
License: MIT
Installs on skills.sh: 75,224 (Nov 2, 2026)
GitHub stars (whole repo): 57,855 (Nov 2, 2026)
Last commit to the repo: Oct 31, 2026
skills.sh audits: Gen Agent Trust Hub pass, Socket pass, Snyk pass
Skill folder: 2 files: SKILL.md and evals/evals.json (counted from the GitHub folder)
Reads: A product marketing context file if one exists (.agents/product-marketing.md or .claude/product-marketing.md)

What it includes

Reads context, then asks about your current flow
Asks for completion rate, field-level analytics, required data and what happens right after signup.
Initial assessment
Four rules
Minimize required fields, show value before asking for commitment, reduce perceived effort and remove uncertainty.
Core principles
Email, password, name, social auth, phone, company, use case
Advice for each field.
Field-by-field optimization
When each works
Includes best practices for multi-step forms.
Single-step vs multi-step
Form level, error handling and microcopy
Covers form-level trust cues, error handling and microcopy.
Trust and friction reduction
A section for mobile signup
Mobile gets its own section of advice.
Mobile signup optimization
Success state and verification flows
Covers what users see after they submit.
Post-submit experience
Audit, recommended changes, form redesign
Audit items list issue, impact, fix and priority. Changes are grouped into quick wins, high-impact changes and test hypotheses.
Output formats
B2B SaaS trial, B2C app, waitlist, e-commerce account
Starting points for each pattern.
Common signup patterns
Four groups of A/B tests
Form design, copy and messaging, trial and commitment, and post-submit experiments.
Experiment ideas

From the official docs

Questions

How do I install signup?

Use the install box above. The repo README also documents the full marketing-skills plugin for Claude Code and Codex, and a one-skill ZIP for the Claude web app on the repo's Releases page.

Do I need the product-marketing skill first?

No. The SKILL.md only says to read a product marketing context file if one exists (.agents/product-marketing.md, .claude/product-marketing.md or the older product-marketing-context.md) and to ask you for anything it does not cover. The README calls product-marketing the foundation the other skills check first.

What will it ask me?

Your signup completion rate, whether you have field-level drop-off data, what data you truly need before use, any compliance or verification needs, and what happens right after signup.

Will it redesign my form?

Yes, if you ask. The form redesign output lists the recommended fields and order, copy for labels, placeholders, buttons and errors, and layout suggestions.

What if I need enriched company data for sales?

The SKILL.md points to the revops inbound-routing playbook in the same repo and says to keep account creation separate from enrichment.

Does signup work in the Claude app or Codex?

The README documents a Codex plugin and a one-skill ZIP for the Claude web app, uploaded under Customize, then Skills. Claude Code is covered by the skills CLI and the plugin.

Does signup need an API key or scripts?

The SKILL.md names no API keys, and the skill folder bundles no scripts. It holds the SKILL.md and an evals file.

Is signup safe?

It is plain text instructions with no bundled scripts, so what it can do depends on your client's own permissions.

Information

updated Nov 2, 2026

Repository: coreyhaines31/marketingskills
Folder: skills/signup

coreyhaines31/marketingskills skills.sh

Sources

Docs, issue trackers and discussions this page is built from.

Show all 4

signup SKILL.md · github.com
coreyhaines31/marketingskills README · github.com
signup on skills.sh · skills.sh
coreyhaines31/marketingskills · github.com