About
Every application deserves a senior architect
Choosing an infrastructure is slow, expensive to get wrong, and usually done by whoever has time. Brunel gives every team the review a senior cloud architect would give: complete, costed, justified, and checkable line by line.
The name
Why “Brunel”
Isambard Kingdom Brunel built the infrastructure of the industrial age: the Great Western Railway, the Clifton Suspension Bridge, pioneering transatlantic steamships. His father, Marc Brunel, a French engineer, dug the first tunnel under a navigable river.
Brunel drew every line of his work himself, costed it and answered for it. That is the standard we hold the product to: a complete design you can read, a price you can check, and files you can ship.
“I am opposed to the laying down of rules or conditions to be observed in the construction of bridges lest the progress of improvement tomorrow might be embarrassed or shackled by recording or registering as law the prejudices or errors of today.”
Who it is for
Built for the people who ship
Startup CTOs
Ship to production properly without a DevOps hire.
A complete, costed plan and the files, in minutes.
Freelancers and agencies
Propose a credible infrastructure and budget to a client.
An exportable architecture with its reasons and costs.
Platform engineers
A well-argued first draft to review, on every repository.
Decisions, alternatives, trade-offs, and reviews on every PR.
Principles
What Brunel promises
- 01Facts before opinions
- Every recommendation cites the facts from your code or the answers you gave.
- 02The AI never invents numbers
- Prices, SKUs, service names and Terraform come from catalogs and templates, not from a model.
- 03Validated output
- Model output is schema-checked, then 16 architecture rules run on every design and every change.
- 04Repository content is data
- Brunel never executes your code, never follows instructions found in it, never sends secrets to a model.
- 05Humans stay in control
- Brunel designs and writes the files; deployment runs in your CI, after your review.
- 06Honest numbers
- The catalog date is always shown, estimates are labelled, and anything unpriced says so.
Built in the open
Brunel was built for the Build With AI challenge on Devpost. The scope, product requirements, technical specification and decision records are public, along with the evaluation on 15 real repositories.
Read the documentation on GitHub →Work with us
Startups, schools, open source maintainers and consultants can join a Brunel program. Organizations can ask for the Enterprise plan.
Your infrastructure, engineered.
Paste a repository. In a minute you have four priced architectures, the reasons behind them, and the files to ship.