Brokerage API Integration Tester

3.40

Derivation Chain

Step 1 Brokerage stock surge & SpaceX indirect investment boom

→

Step 2 Overseas stock indirect investment tools for individual investors

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Step 3 Brokerage API integration verification SaaS for indirect investment tool developers

Problem

Fintech Startups developing indirect investment and automated trading services using brokerage Open APIs (Mirae Asset, Kiwoom, etc.) spend 30–40% of their development time manually verifying API spec differences between brokerages, paper trading environment inconsistencies, and order error handling. The number of brokerages and product types requiring integration is growing rapidly, especially as indirect overseas stock investment products (e.g., SpaceX pre-IPO) surge.

Solution

Provides one-click automated compatibility testing, simulated order execution, and error response pattern Reports for each endpoint across major Korean brokerage Open APIs. Reduces maintenance costs with brokerage-specific spec change alerts and an integration status dashboard.

Target: Fintech Startups and 1–5 person automated trading/robo-advisor development teams, developers aged 25–40

Revenue Model: SaaS Monthly Subscription $44.25/project/month, 3 brokerages included, additional brokerages $14.25/month each. 20% discount for annual payment

Ecosystem Role: Infrastructure

MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty

3.0/5

U Urgency

4.0/5

M Market

3.0/5

R Realizability

3.0/5

V Validation

4.0/5

NUMR-V Scoring System

N Novelty	1-5	How uncommon the service is in market context.
U Urgency	1-5	How urgently users need this problem solved now.
M Market	1-5	Market size and growth potential from proxy indicators.
R Realizability	1-5	Buildability for a small team with realistic constraints.
V Validation	1-5	Validation signal quality from competition and demand data.

SaaS N=.15 U=.20 M=.15 R=.30 V=.20 Senior N=.25 U=.25 M=.05 R=.30 V=.15

Feasibility (67%)

Tech Complexity

29.3/40

Data Availability

17.5/25

MVP Timeline

20.0/20

API Bonus

0.0/15

Feasibility Breakdown

Tech Complexity	/ 40	Difficulty of core implementation stack.
Data Availability	/ 25	Practical availability and cost of required data.
MVP Timeline	/ 20	Expected time to ship a usable MVP.
API Bonus	/ 15	Bonus for viable public API leverage.

Market Validation (70/100)

Competition

10.0/20

Market Demand

20.0/20

Timing

14.0/20

Revenue Signals

10.5/15

Pick-Axe Fit

10.5/15

Solo Buildability

5.0/10

Validation Breakdown

Competition	/ 20	Signal quality from competitor landscape.
Market Demand	/ 20	Demand proxies from search and mention patterns.
Timing	/ 20	Fit with current shifts in tech, behavior, and regulation.
Revenue Signals	/ 15	Reference evidence for monetization viability.
Pick-Axe Fit	/ 15	How well the concept serves participants in a trend.
Solo Buildability	/ 10	Practicality for lean-team implementation.

Technical Requirements

Backend [medium] Frontend [low] Data Pipeline [medium]

Dashboard