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Microcks

INFRA · APIS
Velocity2.5

API mocking and contract testing platform

microcks.io ↗

Microcks 1.16 candidate adds IBM MQ mocking and moves to hardened images with faster startup

api-mockingasync-apicontract-testingkubernetesstartup-performancemcp
◆Current state
Microcks 1.16.0-rc1 is the first release candidate since June's 1.15.0-rc1. It adds AsyncAPI mocking and testing for IBM MQ, request/reply handling for Google Pub/Sub with Workload Identity auth, TLS on the HTTP endpoint and external references in the OpenAPI-to-MCP tool converter. The container images switch to Docker Hardened Images by default and replace Spring AOT with a Leyden AOT cache to cut startup time.
◆Where it's heading
The project keeps broadening the messaging systems it can mock, now reaching enterprise brokers like IBM MQ and Amazon MQ over TLS. In parallel it is reworking its runtime for faster cold starts and smaller attack surface, and the MCP tool converter shows it treating API specs as inputs for AI agents as well as tests.
◆Prediction
Further 1.16 candidates are likely to fix AOT and hardened-image edge cases, since this candidate already carries several JVM crash and probe fixes tied to that switch.

◆Recent moves

  1. 11d ago

    1.16.0-rc1: IBM MQ mocking, hardened images, Leyden AOT startup

    The broadest candidate in the visible history: IBM MQ joins the mockable brokers, Google Pub/Sub gets request/reply, and the OpenAPI-to-MCP converter now resolves external references. The default images move to Docker Hardened Images with a Leyden AOT cache for faster startup, which is a runtime change operators will notice on upgrade.

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  2. 4mo ago

    1.15.0-rc1: Angular 21, native-image netty fix, GraphQL extensions

    Platform maintenance across the stack — the UI moves to Angular v21, netty is embedded explicitly so the native image stops throwing, and a default metrics URL that was initialising a registry it should not have is removed. The OpenAPI overlay export shape correction is the one change that alters output users consume.

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  3. 7mo ago

    1.14.0-rc2 extends OpenAI example generation to GPT-5 models

    Mostly a housekeeping candidate, but it carries the model-family expansion for OpenAI-backed example generation and adds explain tracing to operation service errors. The generation feature broadening rather than deepening puts it in line with the incremental pattern across this cycle.

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  4. 7mo ago

    1.14.0-rc1 adds Sync-to-Async triggers and OCI-packaged Helm charts

    The substantive candidate of the 1.14 line: Sync-to-Async triggers with trigger info propagated to the async minion let a synchronous call drive event-based mocks, closing a gap between the two protocol worlds Microcks covers. Shipping the Helm chart as an OCI artifact and registering reflection classes for native builds continue the Kubernetes deployment work.

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