Spec-driven feature development with AI agents

The feature that keeps slipping, specified once, built in parallel

Big features stall twice: once when nobody agrees what “done” means, and again when the work queues behind one team. Agents write the spec with you, split it into a task graph, and build the independent parts side by side.

YOU HAND OVER“Invoices in any currency”
epic · BILL-500 multi-currencySpec…
spec.md · acceptance criteria○Prices stored in the invoice currency○Rates locked at the invoice date○Refunds use the original rate
Schema—
Rates service—
Invoice API—
Refunds—
Invoice UI—
Docs—
1Spec
2Split
3Build
4Merge
YOU GET18 tasks merged in 3 wavesSpec approved once · built side by side
Built by Syncfusion, serving 47,000+ organizations.25+ years of developer tools, now reimagined for the agent-first era.
47,000+Syncfusion customers
1,600+Syncfusion UI components
25+Years of Syncfusion developer tools
Syncfusion component licensing is separate.
The spec

Draft a feature spec from your idea and codebase

Rework often starts with a requirement nobody wrote down. The agent reads the code the idea touches, drafts the spec with acceptance criteria and edge cases, and lists every open decision as a question for the product owner.

Names the code that will changeThe spec names the models, screens, and services it changes.
Criteria you can testEvery story ends in criteria a reviewer can check.
Open decisions go to the product ownerOpen decisions wait for an answer instead of a default.
spec.md · BILL-500DRAFT
THE IDEA

“Let customers be invoiced in their own currency.”

ACCEPTANCE CRITERIA✓Every invoice stores prices in its own currency✓Exchange rates lock on the invoice date✓Totals round once, per currency rules✓Reports convert to the company currency
OPEN QUESTIONS · ANSWER BEFORE BUILD
Which rate source do we trust?waiting for the product owner
Can a customer change currency mid-contract?waiting for the product owner
Refunds: original rate or today’s rate?waiting for the product owner
The task graph

Split a feature into tasks that can run in parallel

Big features run slowly because they run in one lane. The approved spec becomes a graph of small tasks. Everything that can run at once does, each task in its own sandbox, and the next wave starts once your team merges its inputs.

BILL-500 · task graphWAITING FOR APPROVAL
WAVE 1READY
Currency columnsS
Rates serviceM
Rounding rulesS
WAVE 2AFTER 1
Invoice APIM
Refund at original rateM
Report conversionS
WAVE 3AFTER 2
Invoice UIM
Currency pickerS
Docs and changelogS
Each task is one pull request. A wave starts only when the one before it is merged.
01One task, one pull requestSmall enough that review doesn’t become the bottleneck.
02Dependencies firstA wave starts only when the work it needs is merged.
03Run independent tasks in parallelTasks in a wave can run concurrently, each in its own cloud sandbox.
The forecast

Estimate task effort and usage cost during planning

Every task is sized from the code it touches, with an effort estimate and an estimated usage cost (provider cost + 10% platform fee). Pick the tickets for a release and see the total against your team budget, so scope is decided at planning, not cut in a panic in week six.

Scope before codeYou approve the spec, task graph included, before a single line is written.
Estimates based on affected files and testsEach estimate comes from the files and tests the task touches, not a guess.
Adjust scope during release planningIf the forecast is over budget, you move tickets out now, not halfway through.
Illustrative example, not a quote
Release 4.2 · forecast$0 OF $140 · WITHIN BUDGET
Currency columns and roundingBILL-501 · 2 days$18
Rates serviceBILL-502 · 3 days$31
Invoice APIBILL-503 · 3 days$27
Refunds at the original rateBILL-504 · 2 days$22
Invoice UI and pickerBILL-505 · 3 days$29
CUT LINE · MOVES TO 4.3
Bulk currency migrationBILL-506 · 4 days$46
Estimated usage cost per task (provider cost + 10% platform fee), sized from the code each one touches.
The same day, twice

How Omar plans a multi-currency feature

Illustrative example, not a customer result.

Here is what the work looks like today, and what changes when an AI team takes the busywork off the plate.

Without BoldCreateWith BoldCreate
09:00
Multi-currency invoicing is on the roadmap for the third quarter running.Still “too big”
Omar types the feature in one sentence.1 sentence in
11:00
A two-hour meeting to agree what the feature includes.No written spec
The spec arrives with criteria, edge cases, and five open questions.Decisions on paper
14:00
Work starts. The UI waits on the API, the API waits on the schema.One lane, no parallel work
Eighteen sized tasks run in three waves, each in its own sandbox.6 lanes at once
17:30
Review finds a missed edge case: refunds in a second currency.Two weeks of rework
The refunds edge case was a spec question on day one, not a review surprise.No rework
A feature stuck for three quarters, specified and built in parallel

Frequently asked questions

How do agents turn an idea into a spec for a large feature?
One sentence is enough. The agent reads the code the idea touches and drafts a spec with acceptance criteria, edge cases, and every open decision listed as a question for the product owner.
How is a large feature built in parallel?
The approved spec becomes a graph of small tasks, one pull request each. Tasks in a wave can run concurrently, each in its own cloud sandbox, and the next wave starts when your team merges its inputs.
When do I approve the scope?
You approve the spec, task graph included, before a single line of code is written.
How do I know what the feature will cost?
Every task is sized from the code it touches, with an effort estimate and an estimated usage cost (provider cost + 10% platform fee). Pick the tickets for a release and see the total against your team budget.

Bring a feature that needs clearer scope

Start with one task in your existing codebase: one sentence is enough. Review the spec and the task graph before a single line of code is written.

$199 a month for 20 seats · AI and sandboxes at provider cost + 10% platform fee