Suggestions save keystrokes, but whole requirements still take whole days.
It does the whole task.
It does not wait for your next keystroke. You give it a requirement, and it delivers a change.
Give it a requirement. It checks your codebase, writes and tests the change, has it reviewed twice, and delivers it with a certificate.
Available soonAn engineering team you hand a requirement to.
It plans, writes, tests and delivers. Every change arrives with a certificate.
1 import { sum, roundMinor } from "../lib/money.js"; 2 import { vatRate } from "./model.js"; 3 4 /** 5 * Invoice total with VAT, to the nearest minor unit. 6 * Whole minor units, never floats (decision D-14). 7 */ 8 export function invoiceTotal(items, region) { 9 const subtotal = sum(items.map((item) => item.net)); 10 const rate = vatRate(region); 11− return subtotal; 11+ const vat = items 12+ .filter((item) => !item.zeroRated) 13+ .reduce((total, item) => total + item.net * rate, 0); 14+ return roundMinor(subtotal + vat); 15 }
invoice-service ⎇ delivery/vat-totals · EU$0.42 of $2.00 ceiling ▌ Add VAT to invoice totals, rounded to two decimals. ✓ Specification four acceptance checks ✓ Plan 8 units · $1.60 · about 11 min ◐ Units 3 of 8 done · 2 running at once ○ Assurance independent assurance ○ Your approval phone, fingerprint or face ○ Delivery acme/invoice-service ❯ you can close this terminal. work continues.
Everything it does, on every change.
Read before a line is written, so conflicts show up on day one.
An estimate, the time and a ceiling you set. Failed calls are counted.
Many tasks at once, without colliding.
Applied to every change. A change that breaks one is stopped.
An approach that failed once is not tried again.
It learns the style of your repository.
Compiled, run and tested first.
Segregation of Duties: nothing approves its own code.
A pull request, in the version control you already use.
Fingerprint or face. Pause or stop from there.
On every change, and anyone can check it.
Close the terminal. The work continues.
Everything else steps back. KTER CODE works and stays quiet until it needs your decision.
Write the code yourself. KTER CODE stays out of your lines, and checks them against your tests and your team's rules.
They sit beside you and suggest.
Review is the new bottleneck.
Suggestions save keystrokes, but whole requirements still take whole days.
It does not wait for your next keystroke. You give it a requirement, and it delivers a change.
Problems show up in review, or worse, in production.
The requirement is checked against your codebase before a line is written, so conflicts show up on day one.
Reviewers cannot keep up with what is being produced.
Independent Assurance before it reaches you, under Segregation of Duties.
Team rules are written down, but the tool does not follow them and the same mistakes return.
Your team rules apply to every change, a change that breaks one is stopped, and an approach that failed is not tried again.
Auditors and customers ask what was checked, and the answer is a pile of chat history.
The test record and a signed certificate come with every change.
Output arrives in a tool you then have to move it out of.
Delivered as a pull request to the version control you already use, for you to review and merge.
A sentence in. A pull request out.
In your own words, with files or screenshots if you have them. Nothing is written until you have approved the plan.
Write it as you would for a senior developer. Add anything that explains it. It is read first, and nothing is written until you approve the plan.
Add VAT to invoice totals, rounded to two decimals. Zero rated items carry no VAT. Existing invoice tests must not change.
The tasks, the cost and the time, and the rules it will follow.
Your requirement, turned into a specification and a plan. Nothing is written until you approve it.
It works through the plan while you do something else.
1 import { sum, roundMinor } from "../lib/money.js"; 2 import { vatRate } from "./model.js"; 3 4 /** 5 * Invoice total with VAT, to the nearest minor unit. 6 * Whole minor units, never floats (decision D-14). 7 */ 8 export function invoiceTotal(items, region) { 9 const subtotal = sum(items.map((item) => item.net)); 10 const rate = vatRate(region); 11− return subtotal; 11+ const vat = items 12+ .filter((item) => !item.zeroRated) 13+ .reduce((total, item) => total + item.net * rate, 0); 14+ return roundMinor(subtotal + vat); 15 }
Your team's decisions apply to every change. An override needs a reason, and it is recorded.
D-14 Money is stored in minor units, never floating point. Decided by Priya on 3 Sep. Applied to 9 earlier changes.
8 export function invoiceTotal(items, region) { 9 const subtotal = sum(items.map((item) => item.net)); 10 const rate = vatRate(region); 11− return subtotal; 11+ return Math.round(subtotal * (1 + rate) * 100) / 100; 12 }
Every change clears Independent Assurance before it reaches you.
Every line you wrote, traced to the code that answers it and the test that proves it.
| You asked | Code | Test |
|---|---|---|
| Add VAT to invoice totals | totals.js:11-14 | includes VAT by region |
| Rounded to two decimals | money.js roundMinor | rounding, 6 cases |
| Zero rated items carry no VAT | totals.js:12 | zero rated items |
| Existing invoice tests unchanged | none touched | 31 unchanged, all pass |
Agreed. Rounding happens once, in whole minor units.
Agreed. The exemption flag is read from the item, not inferred.
Delivered to your repository. Nothing is merged without you.
Pull request opened in your repository. Nothing was forced, nothing was merged.
Anyone who needs more delivered than they can write.
Hand over whole requirements and review finished changes, instead of managing the typing.
Come back to a change you can read, with its tests and its reviews already done.
Rules the tool actually follows, not a faster way to ship the same mistakes.
D-14 Money is stored in minor units, never floating point.
For regulated and audited teams, every change carries its own answers.
For the enterprise, the team and the developer.
Shared team rules, your repositories, your approvals and a record for audit.
The command line and your editor, with the same checks on every change.
An individual developer working from the terminal on their own projects, with the same certificate on every change.
Pull request opened in your repository. Nothing was forced, nothing was merged.
invoice-service ⎇ delivery/vat-totals · EU$1.31 of $2.00 ceiling ✓ Your approval you, fingerprint, 08:44 ✓ Delivery pull request #214 opened · not merged ✓ Changes +31 −1 across 5 files KTER-2026-QF7M-0K2X-81PL VALID verify kter.ai/verify?ref=KTER-2026-QF7M-0K2X-81PL ❯ describe a requirement, or type /
Built for the questions security and legal ask.
In your own environment, or in a region you approve.
Access only to the repositories you connect, limited to the change. Your code is kept apart from every other client's and is never used to train for anyone else.
Where the work is processed follows your residency choice. Nothing is sent anywhere you have not approved.
The requirement it answered and the record of its checks.
Your team rules apply to every change.
Delivered to the version control you already use, so there is no lock-in.
With your fingerprint or your face, never a passcode. Coming with the phone apps.