Kulshan.

What Kulshan is.

Kulshan is a free, open-source AWS investigation CLI. It gathers billing, resource, and architecture evidence using read-level AWS APIs, and runs locally with credentials you issue and can revoke.

Apache 2.0. Install with pip install kulshan.

Why it exists.

Enterprise cost investigations stall because billing evidence, architecture evidence, and ownership information live in different places, held by different teams, in different formats. Kulshan builds one reproducible, inspectable evidence base instead of a fresh manual pull every time the question comes up.

How it supports Mission FinOps.

Kulshan produces evidence. It does not replace engineering judgment.

Mission FinOps uses that evidence to test possible explanations, document what supports the conclusion, document what contradicts it, identify missing evidence, state confidence limits, and connect the movement to a workload, account, team, or business event where the evidence allows it.

access --policy

Trust model.

Review the data flow, access boundary, and engagement controls at Trust.

Use it without hiring me.

You can inspect, install, and run Kulshan without hiring Mission FinOps. Nothing about the tool requires an engagement.

Mission FinOps is useful when the difficult part is not running the CLI. It is interpreting the evidence, connecting it to the architecture, reconciling finance and engineering, or producing an explanation that survives executive scrutiny.

Bring me the messy question.

Kulshan gives you evidence. If you want help turning it into an answer finance and engineering both accept, see how the work is shaped.