OxygenIT APIs - Advanced & Trusted cloud carbon measurement | Product

Why OxygenIT APIs?

Track and reduce your cloud and datacenter emissions with precision.

Real-Time + Granular

Get live, resource-level CO₂ emissions data with unmatched precision.

View emissions by instance, region, service, or workload
Updated hourly for major cloud providers (AWS, Azure, GCP)
Normalize data for easy comparison across providers

Consistent Methodology

Unified methodology for end-to-end carbon visibility.

Applies the same emissions model across cloud services and on-prem infrastructure
Ideal for companies with mixed workloads or transitioning infrastructure

Services-Model-Based

Calculations based on actual cloud service behavior — not generic averages.

Uses real configurations like instance type, region, runtime, and energy mix
Supports precise reporting for Scope 3, compliance, and forecasting

Built for Integration

Modern APIs designed for developers, analysts, and automation.

Data collected through observability solutions or reference implementations.
Delivered seamlessly to your preferred dashboards, FinOps, GreenIT, or ESG platforms.

Datacenter Support

Cover more than just cloud — include on-prem and hybrid workloads.

Cover both bare metal and virtual services.
Normalize and compare emissions between environments
Integrate datacenter metadata into the Carbon API

Flexible by Design

Our APIs adapt to your needs, with modular components that fit any architecture or workflow.

No subscription bundles, no mandatory dashboard
Scale usage as your needs grow

Built for accuracy, integration, and scale — OxygenIT delivers the carbon intelligence your tools don’t.

Understand the data behind your carbon calculations

Learn how OxygenIT calculates emissions, from cloud service modeling to region-specific factors.

Designed for Impact Across Cloud, ESG, and Product Teams

From FinOps to ESG leaders, OxygenIT’s APIs support your goals — whether you’re cutting cloud waste, building carbon-aware products, or planning infrastructure with sustainability in mind.

FinOps & Infras-Optimization Teams

Reduce cloud costs and emissions simultaneously.

Use the API Optimize to find and prioritize carbon-saving opportunities
Compare carbon vs. cost tradeoffs in infrastructure choices
Automate actions via API or connect to the dashboards you prefer.

IT Strategy & Architecture Teams

Forecast sustainability and financial impact before major decisions.

Use the APIs to simulate infrastructure changes
Estimate CO₂ and cost for migrations, scaling, or architecture changes
Align IT and ESG goals during planning stages

SaaS Platforms & OEMs

Embed carbon intelligence directly into your product.

Build carbon-aware features with Carbon APIs
Provide trusted emissions data for your users
Provide high-level carbon footprint insights and monetize detailed carbon metrics.

ESG & Sustainability Leads

Get credible, traceable scope 3 emissions for cloud and datacenters.

Feed the Carbon API into your ESG reports, dashboards, or regulatory tools
Align with CSRD, SFDR, and other global standards
Back up Net Zero and Science-Based Targets with verifiable cloud data

Want to see our APIs in action?
- Check out the Cloud Carbon Calculator

Try our APIs for free via the OxygenIT Carbon Calculator — the easiest way to estimate the carbon footprint of any future cloud setup.

OxygenIT Project — Free Cloud Carbon Calculator

FAQ

Can I try the API for free?

Yes, you can use the API free of charge for an unlimited period of time and unlimited user. We also offer a free Carbon Calculator tool to help IT architects to plan the carbon emissions of their upcoming projects.

What do you mean by "Monitored Service"?

The service cost is based on "Monitored Service", meaning a service which has been actively monitored at least once in a month. For example, a VM which has been active for 2 days in a month counts as a Monitored Service. If it does not reappear the month after, it is no longer counted towards the maximum number of Monitored Services.

How do I retrieve AWS, Azure, GCP or on-premise service usage metrics?

We offer APIs, which requires service usage metrics as input for accurate carbon calculation. You can typically retrieve this information from your existing observability solution. We also offer reference implementations to connect directly to AWS, Azure, GCP or Prometheus and access the metrics. Our ESN partners can help you set the necessary integration.

Does OxygenIT cover both cloud and on-premise?

Yes, and with the same methodology, making sure that you can compare between several clouds and on-premise options.

Which cloud services do you cover?

We cover all IaaS services from AWS, Azure, GCP, such as compute, compute with GPU, many storage and backup. We also cover a wide number of PaaS services such as DBaaS, serverless functions, containers, analytics, managed K8s, etc

We ambition to cover for more than 80% of our end customers' cloud originated emissions and 95% of our customers' private datacenter emissions.

Services like SaaS are still very difficult to cover due to a lack of data but we are working with SaaS providers so they can offer their customer a reliable carbon footprint report.

What measurement methodology does OxygenIT use?

OxygenIT respects the computation methodology of the Green Software Foundations ISO 21031. Based on that methodology we are able to compute impact metrics for hardware to high level cloud services (like a PaaS) that also integrates the system architecture of the service.

Our computation engine uses qualified and documented data for each computation, and we maintain up-to-date and we add new cloud services and models continously.For operational carbon (scope 2), based on real usage data we 1) reconstruct the energy consumption and 2) use the datacenter PuE and carbon emission factor.

For embodied carbon (scope 3), we follow the computation of the ISO 21031.For more information, please refer to our Green Native for IT whitepaper

Does OxygenIT provide recommendations?

Yes, OxygenIT provides a list of recommended quantified reduction actions via its API. We are continually enriching our recommendations as we cover more and more IT services.

Can I plan future IT projects emissions with OxygenIT?

Yes, OxygenIT offers a local webapp tool for architects and PMO so they can quote the carbon impact of multiple versions of an up-coming IT project or transformation. A set of services with basic configuration are available with the free API and it can be extended with Enterprise API access to all cloud services and on-premise equipment.

Who typically uses your APIs?

Our APIs are used by:
- IT Architects willing to simulate the environmental impact of a new IT project or transformation
- FinOps and infrastructure teams looking to align cost reduction and carbon savings
- ESG and compliance teams requiring accurate embodied and operational carbon data for their consolidated reports (e.g., CSRD, SFDR)
- SaaS vendors having to report the carbon emissions of the services they manage for their end-customers

Do you position yourself as a trusted third party?

Yes. Based on its methodology combining granularity, real-time measurement and constant automatic update, OxygenIT offers a fully auditable measurement service compliant with ISO 21031 and the GHG Protocol.

If you have a question, let us know here