---
status: complete
priority: p3
issue_id: "020"
tags: [code-review, type-safety, workflow]
dependencies: ["013"]
---

# Formalize WorkflowResult as TypedDict

## Problem Statement

`WorkflowExecutor.execute()` returns `dict[str, Any]` with implicit keys (`output`, `steps`, optionally `error`). A TypedDict would make the contract explicit.

## Findings

- **Source**: kieran-python-reviewer
- **File**: `src/agent_gateway/engine/workflow.py`

## Acceptance Criteria

- [ ] `WorkflowResult` TypedDict defined
- [ ] `execute()` return type annotation updated
- [ ] mypy validates usage

## Work Log

| Date | Action | Learnings |
|------|--------|-----------|
| 2026-02-20 | Created from PR #22 review | |
