Comparison

json-server vs Microcks

On the evidence we track, json-server leads this comparison with a composite score of 63/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

json-server full profile →Microcks full profile →

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

★json-server63

Microcks50

Attribute comparison across 2 tools
Attribute	json-serverLeader	Microcks
vioscaleAI score	63 / 100medium · 64%	50 / 100high · 78%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	open_source
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	-	10
Security
Scorecardsecurity.scorecard	3.6	7.5
Trust centersecurity.trust_center	https://github.com/security	-
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=json-server&per_page=100 · Last 12m: 0	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=io.github.microcks%3Amicrocks-model&per_page=100 · Last 12m: 0
Adoption
Dependent reposadoption.dependent_repos	85,674	8
Github starsadoption.github_stars	75,731	2,044
Activity
Commits last 30dactivity.commits_last_30d	-	32
Release
Cadence daysrelease.cadence_days	6	43
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	Apache-2.0
Language
Primarylanguage.primary	JavaScript	Java
Content
Faqcontent.faq	5 items	6 items

Score

vioscaleAI score

json-server63 / 100medium · 64%

Microcks50 / 100high · 78%

Pricing

Free tier

json-server✓

Microcks✓

Model

json-serveropen_source

Microcksopen_source

Price level

json-serverfree

Microcksfree

Transparent

json-server✓

Microcks–

Integrations

Count

json-server–

Microcks10

Security

Scorecard

json-server3.6

Microcks7.5

Trust center

json-serverhttps://github.com/security

Microcks–

Vulnerabilities

json-serverCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=json-server&per_page=100 · Last 12m: 0

MicrocksCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=io.github.microcks%3Amicrocks-model&per_page=100 · Last 12m: 0

Adoption

Dependent repos

json-server85,674

Microcks8

Github stars

json-server75,731

Microcks2,044

Activity

Commits last 30d

json-server–

Microcks32

Release

Cadence days

json-server6

Microcks43

History

json-server20 items

Microcks20 items

License

Spdx

json-serverMIT

MicrocksApache-2.0

Language

Primary

json-serverJavaScript

MicrocksJava

Content

Faq

json-server5 items

Microcks6 items

Capabilities

Feature-by-feature on the axes that matter for api mocking. “-” means undocumented, not absent.

Capability comparison for API Mocking
Capability	json-server	Microcks
Capabilities
Mocking mode	Static	Dynamic templating
Stateful scenarios	-	-
Fault chaos injection	-	-
Openapi import	-	✓
Proxy passthrough	-	-
Admin API	-	-
Deployment	CLI binary	Docker
Legacy protocol virtualization	-	-
Collaboration sharing	-	-
Ci cd integration	-	✓
Open source	✓	✓
Market segment	Dev tool	Dev tool
Pricing model	Open source	Open source

Capabilities

Mocking mode

json-serverStatic

MicrocksDynamic templating

Stateful scenarios

json-server-

Microcks-

Fault chaos injection

json-server-

Microcks-

Openapi import

json-server-

Microcks✓

Proxy passthrough

json-server-

Microcks-

Admin API

json-server-

Microcks-

Deployment

json-serverCLI binary

MicrocksDocker

Legacy protocol virtualization

json-server-

Microcks-

Collaboration sharing

json-server-

Microcks-

Ci cd integration

json-server-

Microcks✓

Open source

json-server✓

Microcks✓

Market segment

json-serverDev tool

MicrocksDev tool

Pricing model

json-serverOpen source

MicrocksOpen source

What each one is

The product in its own terms, so the numbers below have context.

json-server

Leader

An open-source tool that generates a full-featured REST API server from a JSON or JSON5 file, enabling rapid prototyping and testing without backend development.

Independently observed

Microcks

An open source platform that creates mock APIs and performs contract testing across multiple API specification formats including OpenAPI, AsyncAPI, gRPC, GraphQL, and SOAP to accelerate API development and validation.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

json-server

Leader

Open sourceFree tier

Free, open-source

as of 2026-08-17verify ↗

Microcks

Open source

as of 2026-09-02verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	json-server	Microcks
WebPlatforms	✓	✓
CLIPlatforms	✓	✗
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✗
On-premiseDeployment	✗	✓

Platforms

Web

json-server✓

Microcks✓

CLI

json-server✓

Microcks✗

Deployment

Cloud / SaaS

json-server✗

Microcks✓

Self-hosted

json-server✓

Microcks✗

On-premise

json-server✗

Microcks✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

json-server

Leader

Not documented yet.

Microcks

10 total

Postman
OpenAI
Keycloak
Backstage
Docker Desktop
OpenAPI
AsyncAPI
gRPC
GraphQL
SOAP

Independently observed

Still deciding?

json-server or Microcks: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.