Strata composes proven backend modules straight into your project — reading your schema, following your conventions, wiring them in the right order. Then it writes one command that boots your app and proves the feature actually works.
Writing the feature was never the expensive part. Proving it works is — and that's what Strata hands you.
Every check runs against your data — your fields, your routes, your ID column. None of it is faked.
No black box, no payload. Strata writes ordinary code into your repo and tells you exactly what it created and what it touched.
Finds your schema — Prisma, Mongoose, Drizzle, TypeORM or plain JS — and reads your real data model. Your fields, your types, your ID column.
The pieces go together in the right order — the part teams usually get wrong. Logging before parsing, rate limits before routes, error handling last. You don't have to think about it.
Files land in your repo, in your style. Strata tells you exactly what it created and what it changed. Read it, edit it, delete what you don't want — it's your code, not a dependency you're stuck with.
Strata hands you one command that boots your app and puts the feature through its paces — the real thing, running, not a promise that it should work. Run it and see for yourself.
60 full agent sessions. Four backend tasks, five arms, three runs each. Checks were frozen and published before the first run, every check has a control proving it can fail, and every output tree is archived so any score here can be recomputed from the code it came from.
| Arm | Catalog | Idempotency | Payments | Retry | Average | Cost |
|---|---|---|---|---|---|---|
| haiku | 70.8% | 66.7% | 29.2% | 85.7% | 63.1% | $0.22 |
| haiku + Strata | 87.5% | 85.7% | 100% | 95.2% | 92.1% | $0.27 |
| sonnet | 62.5% | 85.7% | 95.8% | 64.3% | 77.1% | $1.07 |
| sonnet + Strata | 100% | 100% | 95.8% | 95.2% | 97.8% | $1.62 |
| opus | 75.0% | 90.5% | 75.0% | 95.2% | 83.9% | $1.33 |
haiku with Strata scores higher than opus on its own — for a fifth of the price.
sonnet with Strata is the only arm that reaches a perfect score, and it does it twice. No plain model managed it once.
Paying for a bigger model does not fix this. sonnet is the worst arm on catalog while costing 6.6× the cheapest.
Where it costs you. Strata is a cost premium on three of the four tasks — +73% on catalog, +22% on idempotency, +74% on sonnet’s payments run. You are buying quality and predictability, not a discount. And on payments the effect inverts with model strength: given the same modules, haiku’s session barely moves while sonnet’s grows 28% as it re-reads and reworks code it did not write.
Small, deliberate, and battle-tested. Each one passes six machine-checked gates before it can ever reach your project.
If Strata cannot identify your entity with confidence, it says so and leaves a slot — rather than guessing and silently serving the wrong rows.
Strata is an MCP server. It runs locally, on your machine, against your code.
{ "mcpServers": { "strata": { "command": "npx", "args": ["-y", "stratalib"] } } }
strata_use — that is the entire surface.Then just ask for the feature.
Read every line, run every check, and keep the code. It was always yours.