Debug with real runtime state
Samurai runs your code in a sandbox, inspects real runtime variables, and traces execution paths to pinpoint the root cause—even for silent bugs where logs show nothing.
Fix silent JS/TS bugs. Avoid regressions.
Samurai Agent runs your code to inspect real runtime state and execution paths, generating ground-truth root-cause context for AI coding agents.
Built for:
See Samurai Agent in Action
AI coding agents changed how we write code. But when we tried to debug complex bugs with them, we kept seeing the same pattern: no runtime context, no root cause, and new regressions. Samurai was built to solve exactly that—by running your code and exposing the ground truth.
How it works
1
Ask Samurai about a bug in VS Code (or Cursor)
Pin relevant files and explain the issue.
2
Samurai runs your code and analyzes runtime behavior
It inspects real execution paths and state to find the root cause.
3
Get copy-pasteable root-cause context
Paste it into your AI coding agent to fix the bug accurately and avoid regressions.
Samurai doesn't replace your AI coding agent—it gives it the runtime context it's missing.
Before vs After
Before
AI coding agents without runtime context
- • "Fix this bug" → guess based on static code
- • Partial fixes introduce regressions
- • More prompts, more breakage
- • Hours lost chasing new bugs
After
With Samurai as a context layer
- • Samurai runs your code and finds the root cause
- • Ground-truth runtime context for your AI agent
- • Fewer attempts, accurate fixes
- • Regressions avoided
How we do it differently?
Root-cause context for humans and AI agents
Samurai turns runtime behavior into clear diagrams and explanations so developers can understand the root cause fast—and generates copy-pasteable context you can feed into Cursor or Claude Code to fix it accurately.
JS/TS bug database + privacy-first
We improve accuracy using our own JS/TS bug database and debugging patterns—not by collecting user code or chat. Samurai does not store your code or messages.
FAQ
Questions or feedback?
Not sure if Samurai fits your use case, or have feedback after trying it? Just email me — I read every message.
Email Yuto