PSD2Kit

No-code PSD2 open banking wrapper for EU devs

Score: 7.9/10BJMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

EU GDPR and open banking regulations make solo fintech builds 10x harder and costlier than standard SaaS development.

Solution

PSD2Kit offers pre-built, compliant API wrappers to major EU banks via AISPs like Tink, handling SCA, consent flows, and data sanitization. Indie hackers connect accounts with one SDK, avoiding 6-month compliance builds. Includes mock data for testing and production switching.

Target Audience

Solo indie hackers and bootstrapped developers building fintech apps for EU customers

Differentiator

Solo-dev focused SDK with built-in GDPR data mapping for fintech apps

Brand Voice

friendly

Features

Bank Connector SDK

must-have25h

JS SDK for account linking and balance/transaction fetch

SCA Consent Flow

must-have18h

Hosted consent screens compliant with PSD2

Data Sanitizer

must-have12h

Auto-anonymize PII per GDPR rules

Mock Bank Mode

must-have10h

Test without real bank APIs

Webhook Callbacks

must-have15h

Push account updates to your app

EU Bank Coverage

nice-to-have12h

Add more banks via dashboard

Usage Analytics

nice-to-have10h

Track API calls and errors

Custom Data Maps

future15h

User-defined GDPR field mappings

Total Build Time: 117 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
api_keytextNo
created_attimestampNo

accounts

ColumnTypeNullable
iduuidNo
user_iduuidNo
bank_idtextNo
consent_statustextNo
last_synctimestampYes

Relationships:

  • user_id references users(id)

api_calls

ColumnTypeNullable
iduuidNo
user_iduuidNo
endpointtextNo
successboolNo
timestamptimestampNo

Relationships:

  • user_id references users(id)

API Endpoints

POST
/api/connect-account

Initiate bank link

🔒 Auth Required
GET
/api/accounts

List linked accounts

🔒 Auth Required
GET
/api/transactions

Fetch sanitized data

🔒 Auth Required
POST
/api/webhook

Receive bank updates

Tech Stack

Frontend
Next.js 14 + Tailwind + shadcn/ui
Backend
Next.js API routes + Supabase Edge Functions
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Tink API (AISP)Resend (emails)

Build Timeline

Week 1: Auth and SDK base

25h
  • User auth
  • Basic SDK

Week 2: Bank integrations

35h
  • Tink wrapper
  • Mock mode

Week 3: Consent and data flows

30h
  • SCA screens
  • Sanitizer

Week 4: Dashboard and webhooks

25h
  • API dashboard
  • Webhooks

Week 5: Testing and polish

20h
  • E2E tests
  • Payments

Week 6: Docs and launch

15h
  • SDK docs
  • Landing
Total Timeline: 6 weeks • 150 hours

Pricing Tiers

Free

$0/mo

No production

  • Mock mode
  • 5 accounts
  • 100 calls/mo

Pro

$45/mo
  • Production banks
  • Unlimited accounts
  • 10k calls/mo

Enterprise

$199/mo
  • All Pro + Custom banks
  • Unlimited calls

Revenue Projections

MonthUsersConversionMRRARR
Month 1803%$135$1,620
Month 64006%$1,080$12,960

Unit Economics

$20
CAC
$650
LTV
4%
Churn
82%
Margin
LTV:CAC Ratio: 32.5xExcellent!

Landing Page Copy

PSD2 Open Banking, Solo Dev Style

Connect EU banks in code without compliance nightmares.

Feature Highlights

SCA-ready SDK
GDPR data clean
Mock for dev
Webhook syncs

Social Proof (Placeholders)

"'PSD2 in a weekend' - Bootstrapped Founder"
"'Life-saver for my app' - EU Dev"

First Three Customers

Target recent open banking tweets and LinkedIn EU fintech groups with free Pro beta; Offer to 3 PH fintech apps in beta; Join indie finance Discords for feedback swaps.

Launch Channels

Product HuntIndie Hackersr/fintechTwitter #openbanking

SEO Keywords

PSD2 API wrapperEU open banking SDKTink alternative soloGDPR open banking tool

Competitive Analysis

Usage-based enterprise
Strength

Wide bank coverage

Weakness

Complex setup for solos

Our Advantage

No-code SDK + GDPR built-in

Salt Edge

saltedge.com
$500+/mo
Strength

Compliant

Weakness

Not dev-friendly

Our Advantage

$45/mo micro pricing

🏰 Moat Strategy

Network of bank consent data improving matching accuracy

⏰ Why Now?

PSD3 delays + 2024 enforcement wave forces quick integrations

Risks & Mitigation

technicalhigh severity

Bank API changes break wrapper

Mitigation

AISP proxy + auto-updates

legalmedium severity

License issues with AISP

Mitigation

Partner with certified AISP

marketmedium severity

Few solo open banking apps

Mitigation

Free tier for adoption

Validation Roadmap

pre-build5 days

Survey 15 EU fintech devs on PSD2 pains

Success: Pain score >7/10

mvp21 days

5 beta integrations

Success: 3 production uses

launch7 days

PH + Twitter

Success: 150 signups

Pivot Options

  • General open banking aggregator
  • US ACH wrapper
  • Crypto on-ramp tool

Quick Stats

Build Time
150h
Target MRR (6 mo)
$1,200
Market Size
$750.0M
Features
8
Database Tables
3
API Endpoints
4