> ## Documentation Index
> Fetch the complete documentation index at: https://evoke-f0bfabff.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Agent 07 — Code

> Code generation agent. Produces actual working code scaffolding — not pseudocode.

<Info>
  **File:** `agents/sdlc/07-code.md` · **Model:** Opus · **Tools:** Bash, Read, Write, Edit
</Info>

## Purpose

The code agent generates real, production-grade scaffolding that follows the architecture exactly. Not pseudocode. Not stubs. Every route has a handler, every handler has error handling, and every database call has connection validation.

## Core principle

> A stubbed codebase is not a codebase. The test suite will run against this output. If it fails to start, every downstream agent fails with it.

## What it does

1. Reads `system_design.json`
2. Generates working code for every component in the architecture
3. Wires up error handling, environment variable validation, and health endpoints
4. Runs tests before claiming done
5. Writes `code_report.json`

## Output structure

```text theme={null}
src/
  index.js              ← Entry point, starts cleanly
  routes/               ← All route handlers
  middleware/           ← Auth, validation, error handling
  services/             ← Business logic
  models/               ← Database models/schema
  config/               ← Environment validation
tests/
  *.test.js             ← Tests that pass
.env.example            ← All required vars documented
```

```json theme={null}
// .rstack/runs/<run_id>/tasks/<task_id>/builder.json
{
  "task_id": "task_007",
  "status": "COMPLETE",
  "files_changed": ["src/routes/auth.js", "tests/auth.test.js"],
  "acceptance_criteria_met": true,
  "commands_run": ["npm test", "npm start"],
  "notes": "All 24 tests passing. App starts on port 3000."
}
```