Guides
How usability testing works and how to run it, from a quick hallway test to a test ordered by your coding agent.
- Usability testing MCP. How a usability testing MCP works: your coding agent sends a flow to a real person and reads back the session. All 22 Hallway Test tools.
- How much does usability testing cost?. What goes into the price of a usability test, a formula to estimate yours, and a worked example for testing one flow with five people.
- How to add an MCP server to Codex: CLI, config.toml and IDE. Add any MCP server to OpenAI Codex: codex mcp add for local and remote servers, the config.toml keys, project scope, OAuth sign-in and common fixes.
- How to add MCP servers to Claude Code: commands, scopes, OAuth. Add any MCP server to Claude Code: claude mcp add for HTTP and stdio servers, local, project and user scopes, .mcp.json, OAuth sign-in and common fixes.
- How to add MCP servers to Cursor: mcp.json, OAuth and CLI. Add any MCP server to Cursor: mcp.json entries for remote and local servers, project and global config, OAuth sign-in, the agent mcp CLI and MCP logs.
- How to audit a mobile app recording with Claude or Cursor. Turn a React Native app recording into a prioritized UX audit: your coding agent reads taps, screens, errors and voice and links each finding to the video.
- How to test a vibe-coded app with real users. Vibe-coded apps work for the person who prompted them. Five steps to test yours with real users and turn what they struggle with into fixes for your agent.
- How to test your app with real users. A complete guide to user testing a web or mobile app: when to test, how many people, where to find them, how to write tasks, run sessions and fix what breaks.
- Usability testing for AI coding agents. Coding agents can build a flow and click through it, but they cannot tell where a person gets stuck. How to add a real-user test to the agent loop.
- What is hallway testing?. Hallway testing is a quick, informal usability test with the next person who walks by. What it catches, how to run one, and how to do it from a coding agent.
Compare
Where different ways of testing help, and where they fall short.
- Synthetic users vs real users in usability testing. Synthetic users are AI personas and agent testers: fast at catching obvious UI mistakes. Real users get confused and give up. When to use each one.
Alternatives
How Hallway Test compares with other usability testing services.
- UserTesting alternative for small teams. UserTesting is built for research teams, panels and studies. Hallway Test is one real tester on one flow, sent by your coding agent, $29 per test after launch.