What are the costs of the integrated build agents for the Refinery Build Services?

Pricing for the build agents is below, we bill in minute increments. Agent OS Memory CPU Ephemeral Storage Cost (USD) Small Agent Linux 2GB 1vCPU (x86, arm) 5GB $0.06 / hour Medium Agent Linux 4GB 2vCPU (x86, arm) 5GB $0.10 / hour Large Agent Linux 8GB 2vCPU (x86) 10GB $0.21 / hour Large Agent Linux 8GB 4vCPU (arm) 15GB $0.21 / hour XL Agent Linux, MacOS 16GB 4vCPU (x86, arm) 15GB $0.43 / hour 2XL Agent Linux, MacOS 16GB 8vCPU (x86, arm) 20GB $0.86 / hour 4XL Agent Linux, MacOS 32GB 16vCPU (x86, arm) 40GB $1.72 / hour

Who maintains the runner images and platform?

We do — patching, upgrades, backups, monitoring, and incident response are included under an agreed SLA.

Do we share hardware with other customers?

No — builds run on dedicated compute to avoid noisy neighbours and reduce variability.

What execution models do you support?

Containers, dedicated VMs, and Kubernetes-backed runners, depending on the workload and scale you need.

Is this a replacement for GitHub-hosted runners?

It’s an alternative when you need bespoke environments, predictable performance, private connectivity, or stronger isolation.

Can runners access services in our private network?

Yes — we can enable secure private connectivity so builds and tests can reach internal dependencies without exposing them publicly.

Services Training About

ContactGithub Build Free trial

StackTrack Refinery Runners for Github Actions

Managed Build Service for Github Actions — on demand

Name: Managed Build Service for Github Actions
Brand: StackTrack
Rating: 4.9 (12 reviews)

Accelerate the software development life-cycle on GitHub Actions with ready-to-go on-demand build agents. Build with Containers, Virtual Machines or Kubernetes.

Github Build Free trial

See our Secure by Design approach

stacktrack-buildservice-for-github-actions — Image showing the build service for Github Actions.

Trusted by teams shipping globally

★★★★★4.9/ 5

ISO 27001:2022GDPR

Containers, VMs, or Kubernetes — built to your spec, managed end-to-end.

Ship faster with runners you control

GitHub-hosted runners are convenient, but they can become a bottleneck when you need predictable performance, private connectivity, or a build environment that isn’t “one size fits all”.

Our Managed GitHub Actions Build Service provides ephemeral build agents matched to your workloads: container runners for standard pipelines, dedicated VMs for isolation and performance, or Kubernetes-backed runners for scale. We tailor runner images, tooling, and runtime dependencies — including multi-architecture builds (x86 and Arm) and OS-specific requirements (Linux, Windows, macOS).

When your pipelines need private access (internal artefacts, registries, test systems), we enable secure connectivity so runners can reach private environments without exposing services to the public internet.

Start with a trial, then expand with add-ons as your teams and pipelines grow.

Scale without bottlenecks

On-demand ephemeral runners

Spin up dedicated agents per job to remove queueing and reduce lead time.

Fit-for-purpose compute

Containers, VMs, or Kubernetes

Choose the execution model that fits your workloads and cost profile.

Cross-OS and architecture

Multi-platform builds

Build on Linux and Windows, with support for x86 and Arm workloads (and macOS where required).

Works with internal systems

Private network connectivity

Let runners reach private services securely for builds, tests, and deploys.

Faster feedback loops

Performance options

Select higher CPU, memory, and fast storage profiles for heavy builds and test suites.

Multi-platform builds

Built to your build spec

Works with most build stacks on GitHub Actions — from JVM and Node to Go, Python and native builds — plus container and IaC workflows.

Trusted by teams shipping globally

Used in production by organisations across retail, healthcare, finance, and open source.

Fast response, practical fixes
Support that focuses on unblocking delivery, not passing tickets around.
Reliable CI and platform operations
Managed services designed to stay stable through change.
Engineers you can talk to
Direct access to people who understand the stack end-to-end.

See how we can support your team →

What slows teams down

Common reasons GitHub Actions pipelines start costing time and focus.

Runner queueing and delays
Pipelines stall when teams compete for limited capacity, especially at peak times.
“Black box” build environments
Default runners make bespoke toolchains, system deps, and build isolation harder than it should be.
Private dependencies are awkward
Builds often need internal artefacts and services that shouldn’t be exposed publicly.
Multi-platform complexity
Cross-OS/architecture builds add friction when environments aren’t consistent.
Noisy neighbours and variability
Shared capacity can cause unpredictable build times and flaky test behaviour.