Build & test mock APIs instantly—practice REST without real services.
Development students are blocked by restrictive free tiers in API testing tools like Postman, limiting hands-on practice for learning RESTful services.
MockMentor lets students create custom mock API servers in seconds, then test them endlessly. No external API dependencies or free-tier woes; generate realistic responses and schemas for hands-on learning. Tracks your mock usage to suggest improvements.
Development students learning RESTful APIs and API testing
Self-hosted mocks with auto-generated tests, focused on offline-capable student practice.
professional
Define endpoints, schemas, and responses via UI.
Test your mock directly in the playground.
Auto-generate JSON schemas from examples.
Create/save as many mocks as needed.
See hit rates and common errors.
Generate Node.js/JSON mock code.
Starter mocks for auth, ecom, etc.
Add realistic network issues.
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| text | No | |
| created_at | timestamp | No |
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| user_id | uuid | No |
| name | text | No |
| config | text | No |
Relationships:
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| mock_id | uuid | No |
| endpoint_path | text | No |
| status | int | No |
| called_at | timestamp | No |
Relationships:
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| name | text | No |
| config | text | No |
Save new mock config
/api/mocks/:idLoad mock
/api/mocks/:id/proxy/:endpointServe mock response
/api/analytics/:mock_idUsage stats
100 calls/day
N/A
N/A
| Month | Users | Conversion | MRR | ARR |
|---|---|---|---|---|
| Month 1 | 250 | 1.5% | $131 | $1,572 |
| Month 6 | 1,800 | 3.5% | $2,205 | $26,460 |
Create instant mock servers to test REST skills offline, no Postman hassles.
Share mock demo video on r/api with pain point hook. Target freeCodeCamp forum threads on API practice. Offer lifetime Pro to first 10 Twitter replies.
Easy mocks
Limited customization
Student-focused + schemas
Local
No UI/collab
Cloud UI + analytics
Proprietary schema gen AI lite + mock library data moat.
Microservices rise means more mock needs in dev education.
Complex mock logic
Start simple, iterate
High compute costs
Tiered + caching
Success: 100 signups
Success: Organic 20%
Other validated startup ideas you might find interesting
Generate client proposals that justify premium pricing for custom AI over free LLMs
Benchmark free LLMs vs your custom AI to win higher-paying clients
Smart pricing calculator & scripts to defend custom AI rates against free LLM demands
Instant access to affordable agritech hardware suppliers for student crop monitoring prototypes
Validate crop monitoring app demand from small farmers before building – zero cost surveys
Drop-ship agritech hardware prototypes to farmers for real-world app testing