# Synthetic Users

> Synthetic Users (syntheticusers.io) runs LLM-powered synthetic users against product URLs, preview links, prototypes, and staging apps, and returns qualitative UX research reports. Find failed experiences before users do.

Programmatic access is a first-class surface: a REST API with Bearer API-key auth, an OpenAPI 3.1 spec, and a remote MCP server for AI agents.

## Developer resources

- [Developer overview](https://syntheticusers.io/developers): entry point for API, docs, and agent integration
- [Documentation](https://docs.syntheticusers.io): full product and API documentation
- [Quickstart](https://docs.syntheticusers.io/getting-started/quickstart/): first API call in minutes
- [Authentication](https://docs.syntheticusers.io/getting-started/authentication/): Bearer API keys (`sk_live_...`), created in the dashboard
- [API reference — Runs](https://docs.syntheticusers.io/api-reference/runs/): start runs and fetch reports
- [API reference — Personas](https://docs.syntheticusers.io/api-reference/personas/)
- [API reference — Webhooks](https://docs.syntheticusers.io/api-reference/webhooks/)
- [API reference — Errors](https://docs.syntheticusers.io/api-reference/errors/)

## API

- [API index](https://api.syntheticusers.io/): machine-readable index of the API surface
- [OpenAPI 3.1 spec](https://api.syntheticusers.io/openapi.json)
- [Health](https://api.syntheticusers.io/health)

## Agent integration

- [Remote MCP server](https://api.syntheticusers.io/mcp): streamable-HTTP MCP server for queuing site tests and reading reports (metadata via GET, JSON-RPC via POST; authenticate with your API key)

## Product

- [Homepage](https://syntheticusers.io/)
- [Sample report](https://syntheticusers.io/sample-report)
- [Dashboard](https://app.syntheticusers.io/)
- [Terms](https://syntheticusers.io/terms)
- [Privacy](https://syntheticusers.io/privacy)