Speedscale

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Introduction

Speedscale captures the API requests your services actually receive in production or staging and replays them against new builds. During a replay, outbound dependencies are mocked from the recorded traffic, so a service can be tested in isolation with realistic inputs and without calling third-party APIs.

The homepage now frames this as AI agents that replay customer requests against every build and grade whether it is ready for production, covering behaviour, performance, spec adherence, security and runtime health, with Speedscale engineers confirming findings (vendor claims). It runs as SaaS or in your own cloud (BYOC) with no data reported back to Speedscale.

For developers, the proxymock CLI records, mocks and replays traffic locally, and the pricing page says it is free for local development.

In the quality loop, Speedscale supports API regression, contract and load checks before release, using real traffic instead of hand-written test cases.

Features

1. Traffic capture: Record real API traffic in Kubernetes.
2. Replay: Run recorded traffic against new builds.
3. Automatic mocks: Mock downstream dependencies from recordings.
4. Load replay: Multiply traffic for performance checks.
5. Readiness reports: Grade builds on behaviour, performance and more (vendor claim).
6. proxymock CLI: Free local recording, mocking and replay.

Pros

1. Realistic tests: Inputs come from real usage.
2. Isolation: No need to call real third-party APIs.

Cons

1. Kubernetes focus: Cluster-centric setup.
2. Data handling: Recorded traffic may contain PII and needs filtering.
3. Usage-based cost: Billed per MB ingested or by memory capacity.

Usage and Links (Example)

1. Install proxymock locally and record traffic while exercising your service.
2. Replay the recording against a new build with dependencies mocked.
3. For clusters, install the Speedscale operator and run replays in CI.

Resources:

• Speedscale website

Pricing

proxymock is free for local development. SaaS: $0.01 per MB ingested; BYOC: $0.01 per memory-GiB-hour under an annual licence. See site.

Recommended for?

1. Teams with complex microservices and hard-to-mock dependencies.
2. Not a fit for simple apps where hand-written tests suffice.

Conclusion

Speedscale brings production traffic into pre-release testing, with a free local CLI to start.

On CheckOps, Speedscale is filed under the API & contract testing, Performance & load and Release & CI gates stages. Related tools listed here include Keploy, Hoverfly, WireMock, K6, HyperTest and Toxiproxy. Before choosing, compare them on licence, supported languages and platforms, hosting model, and how well each fits your existing CI pipeline. Facts on this page were checked against the official website, documentation and repository on 11 November 2026; statements the vendor makes about its own product are marked as vendor claims.