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Unified Permissions Studio for Data APIs
A standalone SaaS tool that allows teams to define granular, role-based access permissions once and apply them universally across REST APIs, GraphQL endpoints, internal tools, and AI agents. It eliminates the need to maintain separate permission logic in every layer of the stack.
Why this matters
You are a backend developer who has built a REST API with custom permissions, then built an internal tool with its own permission checks, and now you are adding an MCP server for AI agents with yet another permission layer. Every time a business rule changes, you have to update permissions in three places, and they inevitably drift out of sync. You need a single place to define who can do what, enforced automatically across every interface your team builds, so you never have to worry about permission inconsistencies again.
- · Built for Backend engineers and API developers at growing companies who maintain multiple interfaces (web apps, mobile, internal tools, AI) over the same data and struggle with permission drift..
- · Most likely monetization: SaaS subscription.
The Pain · Narrative
You are a backend developer who has built a REST API with custom permissions, then built an internal tool with its own permission checks, and now you are adding an MCP server for AI agents with yet another permission layer. Every time a business rule changes, you have to update permissions in three places, and they inevitably drift out of sync. You need a single place to define who can do what, enforced automatically across every interface your team builds, so you never have to worry about permission inconsistencies again.
Score Breakdown
Market Signal
Go-to-Market
Backend engineering leads at companies with 20-200 developers who manage multiple internal tools and APIs over shared databases.
~100K development teams worldwide manage multiple API interfaces with duplicative permission logic.
Technical blog content on API security and permission management, paired with an open-source SDK.
$199/month per environment, scaling with number of API endpoints managed.
15 paying teams within 90 days, acquired through SEO content on 'unified API permissions' and a GitHub open-source SDK launch.
MVP Scope · 1–2 weeks
- Design the policy definition schema (JSON-based rules).
- Build a middleware proxy that intercepts REST API requests.
- Create a basic UI for defining roles and field-level permissions.
- Implement a simple enforcement engine that evaluates policies.
- Write a Node.js SDK for easy integration with Express APIs.
- Add GraphQL query parsing and permission enforcement.
- Implement policy versioning and rollback functionality.
- Build an audit log showing permission denials in real-time.
- Create a demo application showing permissions applied across REST and GraphQL simultaneously.
- Publish the SDK as an npm package with documentation.
Differentiation
Why This Might Fail
Self-rebuttal — the most important trust signal
- 1Development teams may be reluctant to add an external dependency to their critical API request path due to latency and reliability concerns.
- 2Existing frameworks like Django REST Framework or Ruby on Rails already have built-in permission systems that are 'good enough' for most teams.
- 3The problem might be better solved as a feature within existing API gateways (Kong, Tyk) rather than a standalone product.
Evidence Summary
How AI synthesized this insight — no verbatim quotes
Around four commenters discussed the pain of maintaining permissions across multiple interfaces. Users noted that every new way of accessing data brings another implementation of the same logic, and several places have to agree on who can do what. The discussion underscores that unifying permissions into a single model evaluated at query time is a significant unmet need.
Action Plan
Validate this opportunity before writing code
Recommended Next Step
Build
Strong demand signals detected. Real pain, real willingness to pay — start building an MVP.
Landing Page Copy Kit
Ready-to-paste copy based on real Reddit community language — no editing required
Headline
Unified Permissions Studio for Data APIs
Sub-headline
A standalone SaaS tool that allows teams to define granular, role-based access permissions once and apply them universally across REST APIs, GraphQL endpoints, internal tools, and AI agents. It eliminates the need to maintain separate permission logic in every layer of the stack.
Who It's For
For Backend engineers and API developers at growing companies who maintain multiple interfaces (web apps, mobile, internal tools, AI) over the same data and struggle with permission drift.
Feature List
✓ Centralized policy definition interface ✓ Universal enforcement engine for REST, GraphQL, and MCP ✓ Field-level and row-level access control ✓ Policy versioning and audit trails ✓ SDKs for popular backend frameworks
Where to Validate
Share your landing page in r/Product Hunt · developer-tools — that's exactly where these pain points were discovered.
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