Introduction

Fraser is Lythe's AI-powered simulation and evaluation product, and it works as an AI product teammate inside Slack or Microsoft Teams. It runs AI personas and subagents across your websites, product flows, prototypes, and mobile builds, reports what they struggled with, before real users hit the same walls, and turns each finding into engineering work in Jira or Linear.

Where traditional user research is slow to schedule and expensive to repeat, Fraser is designed to be run continuously: kick off a run from Slack or Teams on every meaningful change, against every flow you care about, and get findings back where your team already works.

What Fraser is for#

• Finding friction before you ship. Point Fraser at a signup flow, pricing page, or onboarding sequence and see where personas hesitate, misread, or drop off.
• Evaluating a change. Re-run the same personas against a new build to see whether a fix actually removed the friction it was meant to remove.
• Turning customer data into personas. Feedback, support tickets, and call transcripts become reusable personas that reflect the people who actually use your product.
• Accessibility and craft review. Personas that navigate by keyboard and screen reader surface focus traps, unlabeled controls, and contrast problems. This is a design aid, not a legal accessibility conformance audit or certification (for example WCAG, ADA, or EN 301 549).
• Getting findings into your backlog. Every finding can be filed to Jira or Linear as a ticket, with the suggested fix attached, straight from Slack or Teams.

What Fraser is not#

Fraser produces synthetic feedback. It is a research-support and evaluation tool, not a replacement for talking to real users.

Simulation outputs should not be presented as real user interviews, statistically valid survey results, verified vulnerability reports, or guaranteed market truth unless you independently validate them. See Authorization & limits.

Where to go next#

• New to Fraser? Start with the Quickstart.
• Want the mental model first? Read How it works.
• Running it in Slack or Teams and filing tickets? See Slack, Teams & tickets.
• Curious how personas stay grounded? See Personas.