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 13 more developer resources.
Kin Score
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 5
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONMockServer control API
OPEN COLLECTIONMockServer control expectation API
OPEN COLLECTIONMockServer API
OPEN COLLECTIONMockServer control verify API
OPEN COLLECTIONPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Mockserver Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Mockserver Finops
FINOPSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Source (apis.yml)
Work with this as data
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MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for providers
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find_providersBrowse and filter every provider in the catalog.get_provider_artifactsEvery artifact this provider publishes, grouped by type.get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.get_provider_toolsEvery MCP tool they ship, with the operation each wraps.get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.get_provider_ratingPRO — composite, band, trend and facet scores.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/providers/mockserver"
curl "https://apis.io/api/v1/providers?limit=25"
curl "https://apis.io/api/v1/providers/mockserver/operations?limit=25"
curl "https://apis.io/api/v1/providers/mockserver/evidence"
Discovery needs no key. Ratings and market analysis are Pro.