Your payroll compliance teammate, built into the IDE

You don't have to slow your roadmap down to build a compliant payroll integration. Developer Copilot gives your team a personalized roadmap and the knowledge they need, right in the IDE, across every Symmetry product, to get from contract signed to features shipped, faster.

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Agent

How do I handle multi-state payCalc scenarios?

Thought for 2s · used Copilot

Read multi-state-sit-withholding.md L1-410

1. Structuring wages for multi-state

You need separate wage objects for each state, plus a federal aggregate:

Wage object	locationCode	grossWages
Federal	00-000-0000	Sum of all states
State A Regular	State A code	State A only

For example, a Nevada resident who earns $3,000 in California and $2,000 in Nevada:

+Send

multi-state-employee.json

2 "employeeId": "EMP-4821",

3 "residentState": "NV",

4 "wages": [

5 {

6 "locationCode": "00-000-0000",

7 "wageType": "Regular",

8 "grossWages": 5000

Files

copilot-advisor

copilot-architect

copilot-engineer

examples

multi-state-employee.json

AGENTS.md

Developer Copilot features

Grounded in the real schema, not a guess

Grounded in the real schema

Validated request examples and documented edge cases, not a generic model's guess.

Reads your own implementation

Ingests your code, configuration, and verified company information to check suggestions against what you've actually built.

Always current

One Copilot per product, refreshed through an automated pipeline so guidance stays aligned with the latest release.

Runs in your existing IDE

Cursor, VS Code with GitHub Copilot, Claude Code, or Codeium. Nothing new to learn.

Personalized implementation plans

Phased roadmaps, timeline estimates, and risk call-outs tailored to your team.

Production-quality code on demand

Clients, tests, and configuration across Python, TypeScript, Java, C#, Go, and more.

Developer Copilot modes

Three modes, one Copilot

Developer Copilot ships with up to three modes. Your engineers never pick one manually; the assistant moves between them on its own, based on what's asked.

Advisor

Answers technical questions on APIs, schemas, and product concepts: troubleshooting, best practices, validated request examples.

Agent

What fields are required for this request?

Thought for 5s · used Copilot

required: employeeID, wages[], taxJurisdictionParms[], ...

optional: benefits[], imputedIncome[], ...

source: STE 2026-R1 payCalc schema

+Send

multi-state-employee.json

2 "employeeId": "EMP-4821",

3 "residentState": "NV",

4 "wages": [

5 {

6 "locationCode": "00-000-0000",

7 "wageType": "Regular",

8 "grossWages": 5000

Files

copilot-advisor

copilot-architect

copilot-engineer

examples

multi-state-employee.json

AGENTS.md

Architect

Plans and scopes the integration: phased roadmaps, timeline estimation, risk identification, task breakdowns with acceptance criteria.

Agent

Create an implementation plan for a two-person team

Thought for 5s · used Copilot

Phase 1 (Wk 1–2): Auth + core schema mapping

Phase 2 (Wk 3–4): Multi-state validation

Phase 3 (Wk 5): QA + go-live

Risk: local jurisdiction coverage in CA, NY

+Send

multi-state-employee.json

2 "employeeId": "EMP-4821",

3 "residentState": "NV",

4 "wages": [

5 {

6 "locationCode": "00-000-0000",

7 "wageType": "Regular",

8 "grossWages": 5000

Files

copilot-advisor

copilot-architect

copilot-engineer

examples

multi-state-employee.json

AGENTS.md

Engineer

Generates production-quality integration code: clients, service layers, unit and integration tests, configuration.

Agent

Generate a Python client for this endpoint

Thought for 5s · used Copilot

class PayrollTaxClient:
    def calculate(self, request: TaxRequest) -> TaxResult:
        ...
    # includes unit tests + config template

+Send

payroll_tax_client.py

4class PayrollTaxClient:

5 def calculate(self, request: TaxRequest) -> TaxResult:

13 # includes unit tests + config template

Files

copilot-advisor

copilot-architect

copilot-engineer

src

payroll_tax_client.py

models.py

tests

AGENTS.md

Agent

What fields are required for this request?

Thought for 5s · used Copilot

required: employeeID, wages[], taxJurisdictionParms[], ...

optional: benefits[], imputedIncome[], ...

source: STE 2026-R1 payCalc schema

+Send

multi-state-employee.json

2 "employeeId": "EMP-4821",

3 "residentState": "NV",

4 "wages": [

5 {

6 "locationCode": "00-000-0000",

7 "wageType": "Regular",

8 "grossWages": 5000

Files

copilot-advisor

copilot-architect

copilot-engineer

examples

multi-state-employee.json

AGENTS.md

How it works

From question to shipped code

1Ask
An engineer asks a question, requests a plan, or asks for code, right inside the IDE they already have open.
2Route
Copilot determines which mode fits the ask and pulls from the product's real schema, examples, and documented edge cases.
3Ground
It checks the answer against your own code, configuration, and verified company information where relevant.
4Deliver
You get a validated answer, a phased plan, or production-quality code, not pseudocode or a guess.

Clients

Who will love it?

Engineering (platforms and employers alike): Ship the integration without becoming payroll domain experts first. Get real, validated code instead of pseudocode.
Product & engineering leadership: Compress time to first value with a realistic, agent-generated implementation plan from day one.
Founders / technical founders: Get more out of a small team. Copilot acts like an extra implementation engineer, without the hire.
Support & tax compliance: Fewer integration questions land in the queue when engineers can resolve most of them directly in the IDE.

The same knowledge our implementation team uses, now yours, on day one.

Get a demo

FAQ

I'm already a Symmetry client. How do I get started?

Do I have to pay extra for Developer Copilot?

How is this different from a generic AI coding assistant?

Does Copilot see our client data or our codebase?

Which IDEs does it work with?

Will the guidance go stale as Symmetry ships updates?

Do I need to pick a mode before I start?

Which products have a Copilot available, and what does each one do?

Your payroll compliance teammate, built into the IDE

1. Structuring wages for multi-state

Grounded in the real schema, not a guess

Grounded in the real schema

Reads your own implementation

Always current

Runs in your existing IDE

Personalized implementation plans

Production-quality code on demand

Three modes, one Copilot

From question to shipped code

1Ask

2Route

3Ground

4Deliver

Who will love it?

FAQ

Looking for more?

STE MCP

Symmetry Tax Logic

Symmetry Guides

Your payroll compliance teammate, built into the IDE

Grounded in the real schema, not a guess

Grounded in the real schema

Reads your own implementation

Always current

Runs in your existing IDE

Personalized implementation plans

Production-quality code on demand

Three modes, one Copilot

From question to shipped code

1Ask

2Route

3Ground

4Deliver

Who will love it?

FAQ

Get started

Looking for more?

STE MCPNEW

Symmetry Tax Logic

Symmetry Guides

STE MCP