DraftRank — The AI Waiver Wire Agent That Makes the Right Pick Before Your League Wakes Up
Your fantasy league opponent processes waiver wire moves at 2am with a spreadsheet and wins every week. DraftRank watches injury reports, snap counts, and target shares in real time, scores every available player against your specific roster needs, and fires off the optimal waiver claim automatically — or texts you the pick with one-tap approval. No more Monday morning regret.
Difficulty
intermediate
Category
Analytics
Market Demand
High
Revenue Score
7/10
Platform
Web App
Vibe Code Friendly
No
Hackathon Score
6/10
What is it?
Fantasy sports managers lose leagues not on draft day but on waiver wire decisions made at 3am on injury news they miss. DraftRank connects to ESPN or Sleeper leagues via their public APIs, pulls live injury reports and game stats via MySportsFeeds or SportsDataIO, and runs an AI scoring model that ranks available players against each manager's specific positional gaps and scoring format. It sends a daily SMS digest with the top 3 waiver adds ranked by expected value, with one-link approval to auto-claim. The MVP targets the 45M US fantasy football players who manage at least one ESPN or Sleeper league. Monetization is $7.99/month per team or $19.99/season — priced at the cost of one wrong waiver pick.
Why now?
Sleeper's public API matured in 2024 with full roster and waiver data endpoints, and SportsDataIO reduced their entry tier to $49/month — making a personalized waiver agent buildable for the first time without enterprise data contracts.
- ▸ESPN and Sleeper league sync that reads your current roster and scoring format automatically.
- ▸Daily waiver wire ranking scored against your specific positional needs and target share trends.
- ▸SMS digest with top 3 adds and one-link auto-claim approval via Twilio.
- ▸Injury alert push that fires within 5 minutes of a starter being ruled out with the best available replacement pre-ranked.
Target Audience
Fantasy football and basketball managers aged 25-45 who play in ESPN and Sleeper leagues — approximately 45M US fantasy players spending $8-$30/year on tools.
Example Use Case
A fantasy manager in a 12-team PPR league receives a 7am SMS with the three best waiver adds ranked by projected points gained, taps Approve, and the claim is filed before any other manager in the league wakes up.
User Stories
- ▸As a fantasy football manager, I want daily SMS picks ranked against my specific roster gaps, so that I stop missing waiver wire adds while my opponents pick them up first.
- ▸As a busy manager, I want to approve a waiver claim with one tap from my phone, so that I never miss a claim deadline because I forgot to log into the app.
- ▸As a competitive league player, I want injury alerts with replacement rankings within 5 minutes, so that I can act faster than any manual manager in my league.
Done When
- ✓League sync: done when user connects ESPN or Sleeper league and sees their current roster displayed in the dashboard within 60 seconds.
- ✓Waiver rankings: done when available players are ranked with a visible score, projected points added, and one-sentence rationale specific to the user's roster.
- ✓SMS digest: done when user receives a Tuesday 7am SMS listing the top 3 waiver adds with an approve link for the number-one pick.
- ✓Auto-claim: done when user taps the approve link and the claim is confirmed in their Sleeper or ESPN league within 2 minutes.
Is it worth building?
$7.99/month x 1,000 teams = $7,990 MRR at month 3. Seasonal churn is high — model must convert to annual at $19.99/season to smooth revenue.
Unit Economics
CAC: $8 via Reddit organic. LTV: $96 (12 months blended football and basketball at $7.99/month). Payback: 1 month. Gross margin: 80%.
Business Model
SaaS subscription
Monetization Path
Free tier gives top 1 waiver pick per week. $7.99/month unlocks auto-claim, full rankings, and SMS digest.
Revenue Timeline
First dollar: week 2 via manual pick DMs. $1k MRR: month 1 of football season. $5k MRR: week 6 of football season.
Estimated Monthly Cost
SportsDataIO: $49/month (starter plan), OpenAI API: $30, Twilio SMS: $20, Supabase: $25, Vercel: $20. Total: ~$144/month at launch.
Profit Potential
Side-income viable at $3k-$8k MRR during football season with baseball off-season supplementing.
Scalability
High — expand to basketball, baseball, and soccer leagues; add league commissioner tools and draft assistant.
Success Metrics
Week 1: 200 beta signups from r/fantasyfootball. Month 1: 80 paying team subscriptions. Season end: 40% renew for basketball.
Launch & Validation Plan
Post a manual waiver wire pick thread in r/fantasyfootball every Tuesday for 3 weeks, offer personalized picks via DM for $5, and measure conversion before building.
Customer Acquisition Strategy
First customer: post weekly waiver wire analysis threads in r/fantasyfootball and r/dynasty with a free tool link — fantasy communities are extremely engaged and share tools virally. Ongoing: YouTube fantasy football creator sponsorships, Twitter/X fantasy community, App Store ASO for fantasy tools.
What's the competition?
Competition Level
Medium
Similar Products
FantasyPros (generic rankings, no roster-specific scoring), Sleeper (platform, not an optimizer), NumberFire (stats site, no personalized recommendations).
Competitive Advantage
Competitors like FantasyPros give generic rankings — DraftRank scores players specifically against your roster gaps and scoring format, making every recommendation personalized rather than generic.
Regulatory Risks
Low regulatory risk. Fantasy sports tools are legal in all US states under the 2006 UIGEA carve-out. ESPN API use must comply with their terms of service regarding automated access.
What's the roadmap?
Feature Roadmap
V1 (launch): ESPN and Sleeper sync, roster-specific rankings, SMS digest, auto-claim approval. V2 (month 2-3): NBA fantasy support, trade analyzer, push notifications. V3 (month 4+): DFS optimizer, commissioner tools, league-wide leaderboards.
Milestone Plan
Phase 1 (Week 1-2): Sleeper sync, scoring engine, and waiver rankings working on real league data. Phase 2 (Week 3): SMS digest live, Stripe billing active, 20 beta managers onboarded. Phase 3 (Month 2): 100 paying team subscriptions, ESPN sync stable, r/fantasyfootball launch post.
How do you build it?
Tech Stack
Next.js, ESPN Fantasy API, Sleeper API, SportsDataIO, OpenAI API, Supabase, Twilio — build with Cursor for scoring logic, v0 for the ranking dashboard UI.
Suggested Frameworks
Next.js App Router, Supabase client, OpenAI API SDK
Time to Ship
3 weeks
Required Skills
ESPN and Sleeper API integration, sports data API, OpenAI function calling, Twilio SMS, Supabase.
Resources
Sleeper API docs (public), ESPN Fantasy API (unofficial but stable), SportsDataIO docs, Twilio SMS quickstart.
MVP Scope
app/page.tsx (landing + league connect), app/dashboard/page.tsx (waiver rankings), app/api/sync-league/route.ts (ESPN and Sleeper sync), app/api/waiver-rankings/route.ts (scoring engine), app/api/claim/route.ts (auto-claim webhook), lib/db/schema.ts (Drizzle schema), lib/scoring/waiver.ts (ranking logic), components/PlayerCard.tsx (ranked player card), seed.ts (demo league data), .env.example.
Core User Journey
Connect ESPN or Sleeper league -> receive first SMS waiver digest within 24 hours -> tap approve on the top pick -> pick filed automatically -> upgrade to paid after first winning add.
Architecture Pattern
Cron job syncs league rosters from ESPN and Sleeper APIs nightly -> SportsDataIO fetches latest snap counts and injury reports -> scoring engine ranks available players against roster gaps -> top picks stored in Postgres -> Twilio SMS fires daily digest -> user taps approve link -> auto-claim webhook fires to platform.
Data Model
User has many LeagueConnections. LeagueConnection has one Roster with many Players. AvailablePlayer has one WaiverScore calculated daily. User has many ClaimRequests.
Integration Points
ESPN Fantasy API for league and roster data, Sleeper API for league and roster data, SportsDataIO for live stats and injury reports, OpenAI API for ranking rationale generation, Twilio for SMS digests, Supabase for data storage, Stripe for billing.
V1 Scope Boundaries
V1 excludes: trade analyzer, draft assistant, DFS optimizer, mobile native app, and multi-sport support beyond football.
Success Definition
A manager in a competitive 12-team league uses DraftRank to win a waiver priority battle, thanks the tool publicly in their league chat, and renews for basketball season without any founder prompting.
Challenges
ESPN's fantasy API is unofficial and has broken without notice in past seasons — must have Sleeper as a fallback and warn users. Seasonal revenue is the hardest business problem: football season lasts 17 weeks and then revenue drops 60%.
Avoid These Pitfalls
Do not depend solely on ESPN's unofficial API — it has broken mid-season before and will again. Do not launch mid-season without testing the auto-claim flow on a real league — a failed claim costs user trust instantly. Finding first 10 paying users is easy via Reddit fantasy communities but converting them to annual plans is the real retention challenge.
Security Requirements
Supabase Auth with Google OAuth. ESPN cookie tokens and Sleeper tokens encrypted at rest. RLS on all user tables. Rate limiting 30 req/min per IP on sync endpoints. No storage of full league member PII beyond user email.
Infrastructure Plan
Vercel for Next.js. Supabase Postgres. Vercel cron for daily scoring runs. Sentry for errors. GitHub Actions for CI. Total: ~$144/month.
Performance Targets
500 DAU and 2,000 req/day at peak season. Scoring engine under 3s per league. Dashboard load under 2s. SMS delivery within 60s of trigger.
Go-Live Checklist
- ☐Security audit complete.
- ☐Auto-claim flow tested on real Sleeper league.
- ☐Stripe billing tested end-to-end.
- ☐Sentry error tracking live.
- ☐Custom domain with SSL.
- ☐Privacy policy and ESPN API terms compliance noted.
- ☐10 beta managers signed off.
- ☐Rollback plan documented.
- ☐r/fantasyfootball launch thread drafted.
First Run Experience
On first run: a demo league with 12 managers and a pre-built roster is loaded showing 8 ranked waiver wire options with scores and rationale visible immediately. User can explore all rankings and see what an SMS digest looks like. No manual config required: demo mode runs on seed data before any league connection.
How to build it, step by step
1. Define Drizzle schema for User, LeagueConnection, Roster, AvailablePlayer, WaiverScore, and ClaimRequest in lib/db/schema.ts. 2. Build ESPN league sync in app/api/sync-league/route.ts using the unofficial ESPN Fantasy API cookie auth method. 3. Build Sleeper league sync as a fallback using their public REST API. 4. Integrate SportsDataIO to fetch weekly snap counts and injury statuses. 5. Write the waiver scoring engine in lib/scoring/waiver.ts that weights positional need, target share trend, and injury risk. 6. Build PlayerCard component using v0 to display rank, projected points, and one-line rationale. 7. Implement Twilio SMS digest that sends top 3 picks every Tuesday morning at 7am. 8. Build the one-link approve endpoint in app/api/claim/route.ts that marks the claim and confirms via SMS. 9. Add Stripe subscription billing with paywall on auto-claim and full rankings. 10. Verify: connect a real Sleeper league, confirm waiver rankings generate correctly for your specific roster, and confirm SMS delivers and approve link works end-to-end.
Generated
May 3, 2026
Model
claude-sonnet-4-6
Disclaimer: Ideas on this site are AI-generated and may contain inaccuracies. Revenue estimates, market demand figures, and financial projections are illustrative assumptions only — not financial advice. Do your own research before making any business or investment decisions. Technology availability, pricing, and market conditions change rapidly; always verify details independently.