Developer Tools$5K-20K MRRLow competition1-3 Monthsnew

AuthzProbe

Continuously test your API for the authorization holes AI agents now find

Calculate Market Size Founder Fit Assessment Back to All Ideas

● The Problem

In August 2026 a consumer AI agent booking a gym class found a GraphQL endpoint with no authorization check on cancellations and removed another member from the waitlist. The same flaw had been reported in April and never fixed. Broken object-level authorization does not surface in scanners because detecting it requires replaying calls across two authenticated identities.

● The Solution

Point the tool at your API with two test accounts. It enumerates every mutation and endpoint, replays each one with the wrong identity, and reports where the call succeeds anyway. It runs on every deploy and diffs against the last known-good authorization map.

Key Signals

MRR Potential

$5K-20K

Competition

Low

Build Time

1-3 Months

Search Trend

rising

Market Timing

The Melbourne gym incident ran in the BBC, The Register, Engadget, and Tom's Hardware between 10 and 11 August 2026. Broken object-level authorization has held the top spot on the OWASP API Security Top 10 since 2019 with no affordable automated test.

MVP Feature List

1REST and GraphQL endpoint enumeration from a schema or OpenAPI spec
2Cross-identity replay using two or more test accounts
3Authorization map diffing on every deploy
4CI integration with a fail-the-build gate
5Severity ranking by what the successful call exposed
6Remediation snippets per framework
7Scheduled scans with Slack alerts

Suggested Tech Stack

PythonPlaywrightPostgreSQLGitHub ActionsNext.js

Go-to-Market Strategy

Free scan of a single endpoint as the lead magnet, promoted in the vertical SaaS communities where booking software gets built. $79/month for continuous scanning. Publish incident breakdowns of public agent-triggered API failures to earn search traffic and backlinks.

Target Audience

Vertical SaaS Engineering TeamsBooking and Scheduling PlatformsBackend DevelopersFractional Security Leads

Monetization

Tiered Plans

Competitive Landscape

Burp Suite and StackHawk find injection and misconfiguration but need manual setup to reason about authorization logic. Escape and 42Crunch chase enterprise API security budgets. Akto covers BOLA testing but packages and prices for security teams, not the three-person shop that built the gym booking app.

Why Now?

Consumer AI agents now probe APIs on behalf of ordinary users and narrate exactly what they found in plain language. Flaws that sat undiscovered for years get exercised within weeks, and the press coverage lands on the vendor rather than the agent.

Tools & Resources to Get Started

RICE Calculator AI Build vs Buy

Build It with AI

Open directly in an AI code generator or copy the prompt to start building AuthzProbe in minutes.

Replit Agent

Full-stack MVP app

Build a full-stack MVP for "AuthzProbe". PRODUCT Continuously test your API for the authorization holes AI agents now find

Open in Replit Agent

Bolt.new

Next.js prototype

Create a working prototype of "AuthzProbe". OVERVIEW Continuously test your API for the authorization holes AI agents now find

Open in Bolt.new

v0 by Vercel

Marketing landing page

Design a high-converting marketing landing page for "AuthzProbe". PRODUCT AuthzProbe: Continuously test your API for the authorization holes AI agents now find

Open in v0 by Vercel

Unlock Full Playbook

Enter your email to access the full idea playbook with market research, MVP features, and build prompts.

✓ Full market analysis

✓ MVP feature specs

✓ AI build prompts

✓ GTM strategies

✓ Revenue estimates

✓ Competition map

Weekly SaaS ideas + PM insights. Unsubscribe anytime.

Frequently Asked Questions

What problem does AuthzProbe solve?

How much MRR can AuthzProbe generate?

AuthzProbe has $5K-20K MRR potential with a Tiered Plans model. The estimated build time is 1-3 Months with Low competition in the market.

What are the MVP features for AuthzProbe?

REST and GraphQL endpoint enumeration from a schema or OpenAPI spec. Cross-identity replay using two or more test accounts. Authorization map diffing on every deploy. CI integration with a fail-the-build gate. Severity ranking by what the successful call exposed. Remediation snippets per framework. Scheduled scans with Slack alerts.

What is the go-to-market strategy for AuthzProbe?

Who is the target audience for AuthzProbe?

The primary target audience includes Vertical SaaS Engineering Teams, Booking and Scheduling Platforms, Backend Developers, Fractional Security Leads. Consumer AI agents now probe APIs on behalf of ordinary users and narrate exactly what they found in plain language. Flaws that sat undiscovered for years get exercised within weeks, and the press coverage lands on the vendor rather than the agent.

Get a free SaaS idea every morning