Decouple your code from APIs — without guessing

Give every project and version its own HTTPS mock domain. Define endpoints, status codes and responses, then plug the URLs straight into your apps and tests.

Start for free See how it works

No install. Create a project, add endpoints and start calling your mocks.

200 OK project--v1.mockeryn.com
GET /users/123
Status 200
Content-Type application/json 
{
  "id": 123,
  "name": "Jane Doe",
  "role": "admin"
}
FEATURES

Everything you need for reliable mocks

Built for day-to-day engineering work — not just quick demos.

V

Version-aware domains

Validate breaking changes safely with dedicated domains per project and version.

S

Scenario-first mocking

Model real-world behaviors: success, 4xx validation, 5xx failures, edge cases — fast.

R

Realtime request history

Know exactly what response was served and which constraints matched the request.

D

Auto-generated docs

Generate Swagger/OpenAPI docs from your mocks so everyone uses the same contract.

T

Team-friendly workflow

Projects, versions, endpoints, shared mocks — organized the way teams think.

M

Merge versions (roadmap)

Merge one version into another by endpoint and mock signature — keep shared mocks consistent.

Designed for real projects, not one-off demos

Project & version aware

Each project and API version gets its own mock domain, so you can test breaking changes without touching existing clients.

Control status and responses

Configure method, status code, headers and JSON body for every endpoint. Simulate success, errors and edge cases from a single place.

Built with teams in mind

Group mocks by project and team so frontend, backend and QA stay aligned during every iteration and release.

TRUSTED WORKFLOWS

Built for how teams actually work

Three common workflows where Mockeryn replaces fragile setups with
predictable, repeatable behavior.

Frontend

Ship UI without waiting on
backend

Use versioned mock domains as stable API bases. Switch scenarios to validate edge cases while keeping routes consistent.

QA

Test edge cases on day one

QA can reproduce specific responses deterministically. Realtime history shows what happened and which mock served the request.

Backend

Evolve APIs safely across
versions

Validate breaking changes using project + version domains. Merge versions when ready, keep shared mocks consistent, and generate docs.

Beyond mocks (coming soon)

Mockeryn starts as a focused mock server. The roadmap stays close to real-world workflows.

Coming soon

Lightweight task tracking

Link endpoints and mocks to small tasks and acceptance criteria so API changes stay visible.

Coming soon

GitHub / GitLab / Bitbucket links

Connect mocks to branches and pull requests to see which endpoints are changing in each feature.

Coming soon

Generate docs from mocks

Build and host API docs (Swagger / OpenAPI style) directly from your mock definitions.

Ready to mock your next API?

Point your frontend to mock domains today and switch to real backend tomorrow – without changing URLs.

Start for free