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skill Business

Seller Onboarding

seller-onboarding

Creates seller onboarding programs for marketplaces with verification, listing guides, and success milestones. Use when building seller activation flows for platform businesses.

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  1. This skill, packaged and ready to upload. seller-onboarding.zip
  2. In claude.ai or Claude desktop: Customize → Skills (+) → Create skill → Upload a skill, select the zip and toggle it on. Greyed out? Enable code execution under Settings → Capabilities.
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When to Use This Skill

Use this skill when you need to:

  • Design an onboarding program for sellers joining a marketplace
  • Create verification and approval workflows for new sellers
  • Build listing guides and templates that ensure quality
  • Define seller success milestones and activation metrics

DO NOT use this skill for buyer onboarding, SaaS user onboarding, or seller marketing programs. This is for marketplace seller activation and onboarding.


Core Principle

SELLER ONBOARDING HAS ONE GOAL — GET THE SELLER TO THEIR FIRST TRANSACTION AS FAST AS POSSIBLE. EVERY STEP THAT DOES NOT SERVE THAT GOAL IS FRICTION TO REMOVE.


Phase 1: Brief

Required Inputs

Input What to Ask Default
Marketplace type "What do sellers offer on your platform? Products, services, rentals?" No default — must be provided
Seller profile "Who is your typical seller? Individual, small business, professional?" Small business owner
Verification needs "What must you verify? Identity, credentials, insurance, inventory?" Identity and business verification
Current drop-off "Where do sellers abandon the onboarding process?" Unknown — designing from scratch
Time to first sale "How long does it take a new seller to get their first transaction?" Unknown — establishing baseline
Listing complexity "How complex is creating a listing? Photos, pricing, descriptions?" Moderate (title, description, photos, price)

GATE: Confirm the brief before designing the onboarding flow.


Phase 2: Design the Flow

Onboarding Stages

1. Application / Signup
   ↓
2. Verification
   ↓
3. Profile Setup
   ↓
4. First Listing
   ↓
5. Listing Optimization
   ↓
6. First Transaction
   ↓
7. Graduated (active seller)

Verification Workflow

Verification Type Method Timeline
Identity Government ID upload 24-48 hours
Business Business license or registration 24-48 hours
Credentials Professional license or certification 48-72 hours
Background Third-party background check 3-5 business days
Sample work Portfolio review by team 24-48 hours

Choose only the verifications essential for your marketplace. Each added step increases drop-off.

Success Milestones

Milestone Target Timeframe Metric
Profile complete Day 1 100% of required fields filled
First listing live Day 1-3 At least 1 approved listing
Listing optimized Day 3-7 Photos, full description, competitive price
First inquiry/view Day 7-14 At least 1 buyer interaction
First transaction Day 14-30 Completed sale or booking

GATE: Confirm flow and milestones before writing onboarding content.


Phase 3: Write

Welcome Email

Subject: Welcome to [Platform] — here is your path to your first sale

Hey [Name],

You are in. Here is exactly what to do next:

1. Complete your profile (2 minutes)
2. Create your first listing (5 minutes)
3. Get your first sale

We have helped [X] sellers get started, and most get their first inquiry within [timeframe]. Let me show you how.

[Complete My Profile →]

Listing Guide

Create a step-by-step listing creation guide:

Title: Be specific. "[Service/Product] for [audience] — [key differentiator]"

  • Good: "Brand Identity Design for Startups — Logo, Colors, Typography"
  • Bad: "Design Services"

Description: Follow this structure:

  1. What the buyer gets (deliverables)
  2. How it works (process)
  3. Who it is for (ideal buyer)
  4. Why choose you (differentiator)

Photos: Minimum 3, maximum 8. First photo is the listing thumbnail — make it count.

Pricing: Research 5 competitors on the platform. Price within 20% of the average to start.

Seller Success Email Sequence

Email Timing Subject Purpose
Welcome Day 0 "Your path to your first sale" Activate profile and first listing
Listing tips Day 2 "Top sellers do this with their listings" Optimize listing quality
First week check Day 7 "How is your first week going?" Re-engage and offer help
Boost offer Day 14 "Get more visibility for your listing" Promote listing if no transactions
Success story Day 21 "How [Seller] got 10 sales in their first month" Social proof and motivation

Phase 4: Polish

1. Listing Quality Scorecard

## Listing Quality Score

| Element | Points | Criteria |
|---------|--------|----------|
| Title | /20 | Specific, includes key terms, under 80 chars |
| Description | /25 | Covers deliverables, process, audience, differentiator |
| Photos | /20 | Minimum 3, high quality, first photo is compelling |
| Pricing | /15 | Competitive, clear, no hidden fees |
| Response time | /10 | Under 4 hours average |
| Profile completeness | /10 | Photo, bio, credentials, reviews |

**Score 80+:** Featured placement eligible
**Score 60-79:** Standard listing
**Score below 60:** Improvement suggestions sent automatically

2. Seller Dashboard Recommendations

Show new sellers:

  • Profile completion percentage
  • Listing quality score
  • Views and inquiries count
  • Comparison to average seller in their category
  • Next step recommendation (always one clear action)

3. Quality Checklist

## Seller Onboarding Checklist

- [ ] Onboarding stages defined (application → first transaction)
- [ ] Verification requirements are minimal and clearly communicated
- [ ] Verification timeline is stated upfront (no surprises)
- [ ] Welcome email sends immediately on approval
- [ ] Listing guide with examples is provided
- [ ] Listing quality scorecard is defined
- [ ] 5-email onboarding sequence covers Days 0-21
- [ ] Success milestones are defined with target timeframes
- [ ] Seller dashboard shows next-step recommendations
- [ ] Drop-off points are tracked and optimized

Example

Marketplace: Freelance photography platform Seller: Professional and semi-professional photographers

Listing guide excerpt: "Your first photo IS your listing. Buyers scroll fast — you have 2 seconds. Use your strongest portfolio piece as the thumbnail. Not a selfie, not a logo, not a sunset. Your best client work, period."

Milestone tracker: "Day 1: Profile live with headshot and bio. Day 3: First portfolio listing with 5+ photos. Day 7: Pricing set within 15% of category average. Day 14: First inquiry received."


Anti-Patterns

  • Too much verification upfront — verify the minimum needed for trust. Add deeper verification as sellers level up.
  • No listing examples — telling sellers to "create a great listing" without showing what great looks like guarantees mediocre listings.
  • Ignoring time-to-first-sale — if sellers wait 30+ days for a first transaction, they will leave. Actively drive demand to new sellers.
  • One-size-fits-all onboarding — a professional with 100 sales elsewhere needs a different path than a complete beginner.
  • No quality control — low-quality listings damage the entire marketplace. Set standards and enforce them.

Recovery

  • High drop-off at verification: Reduce required documents. Allow sellers to start listing while verification processes in the background.
  • Listings are low quality: Send automated improvement suggestions based on the quality scorecard. Offer a listing review service.
  • Sellers are not getting sales: Manually feature new sellers, send buyer emails highlighting new providers, or offer first-transaction promotions.
  • Sellers ask too many questions: The onboarding materials are unclear. Rewrite based on the top 5 support questions.

View source on GitHub →