MCP human acceptance testing
User Testing: human acceptance testing for MCP servers.
User Testing allows you to create secure, shareable UAT environments that mirror the major AI hosts, so internal QA and beta testers can put your server through its paces. Every session is captured and replayable, and the same server can be tested across every model and client it will meet in production.
Human acceptance testing, made reproducible
Shareable UAT environments
Hosted, isolated web clients that mirror the major AI hosts. Send a link and let QA or beta testers try your server safely.
Sessions become regression tests
Every human tester session is captured and replayable, so a real bug report turns into a repeatable test instead of a screenshot in Slack.
One server, every client
The same server runs across Claude, OpenAI, Gemini, and more, so behavior differences surface before your users find them.
Why it matters
An MCP server ships to a whole ecosystem, not one agent, and it doesn't behave the same everywhere. Models differ in how they select tools and build arguments; clients differ in protocol details. Today teams usually discover those differences one bug report at a time.
User Testing moves that discovery earlier: real testers exercise the server in environments that mirror production hosts, and the same server is compared across models, so the differences become visible before launch instead of after.
Frequently asked questions
Secure, isolated UAT environments: a shareable web client that mirrors the major AI hosts, so internal QA and beta testers can break things safely, and their real sessions become regression tests automatically.
Swarms are AI agents that act like your users. User Testing is for real people: internal QA and beta testers use a secure, shareable environment that mirrors the major AI hosts, and every session is captured and replayable.
User Testing is a paid feature for teams. The open-source core covers local inspection, protocol validation, and evals.
Turn tester sessions into regression tests.
See how User Testing and cross-client testing fit your team's acceptance workflow.