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x402.shizu.me Code Sandbox
x402
x402.shizu.me Code Sandbox is a paid API for AI agents from x402.shizu.me, paid per call via x402, $0.018/call, status unknown (last checked 2026-10-02).
Executes code in an isolated cloud sandbox and returns stdout, stderr, and results — supporting Python, JavaScript, Bash, R, and Java
Price / call$0.018
Success—
StatusUnknown
How this service works
Run code in an isolated cloud sandbox and get its output — agents can't self-host this. POST {code, language?}. language: python (default), javascript, bash, r, java. Returns stdout, stderr, results, error. Hard-capped: 25s wall-clock, 100KB code, 64KB output, fully isolated.
Output
Returns a JSON object containing stdout (standard output text), stderr (standard error text), results (structured output if available), and error (error message if execution failed). Execution is hard-capped at 25 seconds wall-clock time, with a 100KB code input limit and 64KB output limit.
Example use cases
Quick Python math computation
“Execute this Python code and tell me what it outputs: `import statistics; data = [12, 45, 7, 23, 89, 34]; print(statistics.mean(data), statistics.stdev(data))`”
Untrusted bash script testing
“Run this bash snippet safely in an isolated sandbox and show me the stdout and any errors: `for i in $(seq 1 5); do echo "Iteration $i"; done`”
JavaScript logic verification
“Execute this JavaScript code in a sandboxed environment and return the result: `const fib = n => n <= 1 ? n : fib(n-1)+fib(n-2); console.log(Array.from({length:10},(_,i)=>fib(i)));`”
Technical details
Endpoint
POSThttps://x402.shizu.me/sandbox?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to execute arbitrary code in a fully isolated, disposable environment without provisioning your own infrastructure. Ideal for agents that need to evaluate untrusted or user-supplied code, run quick computations, test scripts, or perform data analysis on the fly. Preferred over self-hosted runners when setup time, security isolation, or infrastructure costs matter. Best for short-lived, stateless executions under 25 seconds.
Side effects
- Execution timeout — code exceeds 25-second wall-clock limit
- Code too large — input exceeds 100KB limit
- Output too large — stdout/stderr exceeds 64KB limit
- Unsupported language — language value not in {python, javascript, bash, r, java}
- Runtime error — code throws an exception, returned in stderr/error fields
- Network isolation — code attempting outbound network calls will fail silently or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| code | — | |
| language | — |
Output
Schema · Response
{
"type": "json",
"example": {
"error": null,
"stderr": "",
"stdout": "42\n",
"results": []
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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