QA for chat agents in production.
Every knowledge base update, prompt change, or model swap risks breaking conversation flows your customers depend on. Bug0's AI agents and forward-deployed engineers catch what breaks before your customers experience it.
Chat agents are handling millions of customer conversations daily. Testing them is still manual, slow, and incomplete. We fix that.
Backed by Accel, Peak XV, Salesforce Ventures, Naval Ravikant, and Guillermo Rauch.
You ship the update.
We test every conversation it touches.
Prompt changes · Knowledge base updates · Model swaps · New integrations
The problem
Chat agents break silently.
Every time you ship.
One change. Thirty broken flows. Your customers experience it before you do.
What slips through every time
Prompt changes break working flows
Knowledge base edits cause wrong answers
Context lost in multi-turn conversations
Hallucinations after model swaps
Tool calls fail silently
Compliance checks get skipped
Agent loops without resolving the issue
Prompt injection goes undetected
What we do
A diagnosis, not a dashboard.
AI agents + human engineers on every test run.
Bug0's AI agents simulate hundreds of real conversations against your chat agent. Different user intents, multi-turn threads, edge cases, adversarial inputs. Our forward-deployed engineers review every failure, triage what's real, and report exactly what broke and where.
Full conversation logs and the exact point of failure.
You get a diagnosis, not a dashboard. Complete conversation transcripts of failed interactions. Tool call pass/fail. Context retention across turns. The exact message in the flow where things went wrong. Something you can act on before your next deploy.
Trusted by fast-moving teams.
“Bug0 gives us the speed of AI-native automation with the accuracy and self-healing of human QA. Their hybrid approach is a game changer.”
“Bug0 is the closest thing to plug-and-play QA testing at scale. It's helped us catch multiple bugs before they made it to prod.”
“We plugged Bug0 into our CI and had our critical flows covered within a week. Like having a proactive QA engineer reviewing every deploy.”
“Bug0 integrates seamlessly into our workflow and delivers instant value. The automated test coverage gave us confidence to ship faster.”
“With Bug0, regression testing became effortless. They update tests as fast as we ship, so we can release with confidence every time.”
How it works
From your first commit to your last deploy.
We learn your agent.
Share your agent's config, system prompt, knowledge base, and critical conversation flows. Our FDEs map every path your customers take.
AI generates your regression suite.
Bug0's AI agents create hundreds of test scenarios tailored to your flows. Multi-turn threads, varied user intents, tool call variations, adversarial inputs, edge cases you'd never think to test manually.
Tests run on every change.
Every prompt update, knowledge base edit, model swap, or integration change triggers your full regression suite automatically. No manual effort.
FDEs triage and report.
Our forward-deployed engineers review failures, separate real bugs from noise, and deliver actionable reports with full conversation transcripts, logs, and the exact point of failure. You fix. You ship.
Platforms
Built for teams on
any chat platform.
If your agent handles real customer conversations, we can test it.
Intercom Fin
Zendesk AI
HubSpot AI
Drift / Salesloft
Tidio
Freshchat
Custom / in-house
Early access
Get early access.
We're onboarding a small group of design partners running chat agents in production.
Design partner program
Work directly with our team to shape the product. Your edge cases become our roadmap.
Priority onboarding
We handle setup end-to-end. From flow mapping to your first full regression run in days, not weeks.
Full coverage from day one
Every conversation flow, every edge case, every deploy. Backed by AI agents and forward-deployed engineers.