MockServer website screenshot

MockServer

MockServer enables easy mocking of any system you integrate with via HTTP or HTTPS (e.g. services, web sites, etc) with clients in Java, JavaScript, and Ruby and a simple REST API. MockServer can be used to mock APIs that are not yet fully developed, isolate the system under test for reliable testing, simulate slow or faulty endpoints, and record/replay requests.

MockServer publishes 3 APIs on the APIs.io network: control API, expectation API, and verify API. Tagged areas include Mocking, Mock Server, Testing, Service Virtualization, and HTTP.

MockServer’s developer surface includes documentation, getting-started guide, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
33.4/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemium
3 APIs
MockingMock ServerTestingService VirtualizationHTTPREST APIPlatform

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 33.4/100 · thin
Contract Quality 10.3 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/mockserver: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

MockServer control API

Manage state or process (both MockServer & MockServer Proxy)

MockServer expectation API

Create or update expectations - updates if the id matches an existing expectations (only supported by MockServer)

MockServer verify API

Verify requests (both MockServer & MockServer Proxy)

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

MockServer API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Mockserver Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Mockserver Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Mockserver Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Mockserver Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Mockserver Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Mockserver Agentic Access

20 operations · 20 acting · 12 human-in-the-loop

20 operations · 20 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Issues
Issues

Commercial 1

Pricing, plans, and the legal terms of use

License
License

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: mockserver
name: MockServer
description: MockServer enables easy mocking of any system you integrate with via HTTP or HTTPS (e.g. services, web sites,
  etc) with clients in Java, JavaScript, and Ruby and a simple REST API. MockServer can be used to mock APIs that are not
  yet fully developed, isolate the system under test for reliable testing, simulate slow or faulty endpoints, and record/replay
  requests.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/mockserver.png
url: https://raw.githubusercontent.com/api-evangelist/mockserver/refs/heads/main/apis.yml
access: 3rd-Party
created: '2025-01-08'
modified: '2026-05-19'
position: Consumer
specificationVersion: '0.19'
tags:
- Mocking
- Mock Server
- Testing
- Service Virtualization
- HTTP
- REST API
- Platform
apis:
- aid: mockserver:mockserver-control-api
  name: MockServer control API
  description: Manage state or process (both MockServer & MockServer Proxy)
  humanURL: https://www.mock-server.com/
  baseURL: http://localhost:1080/
  tags:
  - control
  properties:
  - type: OpenAPI
    url: openapi/mockserver-control-api-openapi.yml
  - type: Documentation
    url: https://www.mock-server.com/
  - type: GettingStarted
    url: https://www.mock-server.com/mock_server/getting_started.html
  - type: GitHubRepository
    url: https://github.com/mock-server/mockserver
- aid: mockserver:mockserver-expectation-api
  name: MockServer expectation API
  description: Create or update expectations - updates if the id matches an existing expectations (only supported by MockServer)
  humanURL: https://www.mock-server.com/
  baseURL: http://localhost:1080/
  tags:
  - expectation
  properties:
  - type: OpenAPI
    url: openapi/mockserver-expectation-api-openapi.yml
  - type: Documentation
    url: https://www.mock-server.com/
  - type: GettingStarted
    url: https://www.mock-server.com/mock_server/getting_started.html
  - type: GitHubRepository
    url: https://github.com/mock-server/mockserver
- aid: mockserver:mockserver-verify-api
  name: MockServer verify API
  description: Verify requests (both MockServer & MockServer Proxy)
  humanURL: https://www.mock-server.com/
  baseURL: http://localhost:1080/
  tags:
  - verify
  properties:
  - type: OpenAPI
    url: openapi/mockserver-verify-api-openapi.yml
  - type: Documentation
    url: https://www.mock-server.com/
  - type: GettingStarted
    url: https://www.mock-server.com/mock_server/getting_started.html
  - type: GitHubRepository
    url: https://github.com/mock-server/mockserver
common:
- type: AgenticAccess
  url: agentic-access/mockserver-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/mockserver-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/mockserver-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/mockserver
- type: Website
  url: https://www.mock-server.com/
- type: Documentation
  url: https://www.mock-server.com/
- type: GitHubOrganization
  url: https://github.com/mock-server
- type: GettingStarted
  url: https://www.mock-server.com/mock_server/getting_started.html
- type: Issues
  url: https://github.com/mock-server/mockserver/issues
- type: License
  url: https://github.com/mock-server/mockserver/blob/master/LICENSE.md
- type: LlmsText
  url: https://mock-server.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com