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Sandboxd Code Run – Python/JS/TS Execute
x402
Sandboxd Code Run – Python/JS/TS Execute is a paid API for AI agents from sandboxd-code-run.saastemly.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-10).
Executes Python, JavaScript, or TypeScript code in an isolated one-shot sandbox and returns stdout, stderr, exit code, and output file artifacts
Price / call$0.002
Success—
StatusUnknown
How this service works
Runs Python, JavaScript or TypeScript code in an isolated one-shot sandbox and returns stdout, stderr, exit code and artifacts (Daytona CodeRunRequest/ExecuteResponse compatible)
Output
Returns a JSON object containing stdout (string), stderr (string), exit code (integer — 124 on timeout), base64-encoded contents of any requested output files (outputFiles), a list of output paths that were too large to inline (tooLargeOutputs), and a list of output paths that were absent after the run (missingOutputs).
Example use cases
Data transformation with Python
“Run this Python code in a sandbox for me — it takes a JSON array of numbers from an env variable called INPUT_DATA, computes their mean and standard deviation, prints the results to stdout, and writes a summary.json file; give me back the file contents and any errors.”
TypeScript snippet validation
“Execute this TypeScript snippet in an isolated environment and tell me if it compiles and runs without errors — the code defines a generic merge function and calls it with two sample objects, and I want to see the stdout and exit code.”
JavaScript data processing with argv
“Run this JavaScript script in a sandboxed Node environment, passing the arguments '--format csv --limit 100', and return everything that gets printed to stdout along with the exit code; timeout after 45 seconds.”
Technical details
Endpoint
POSThttps://sandboxd-code-run.saastemly.com/v1/execute-code?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to run Python, JavaScript, or TypeScript code safely in an isolated, one-shot sandbox with support for file I/O, environment variables, and argv — especially when the Daytona CodeRunRequest/ExecuteResponse API shape is expected. Prefer this over shell-command sandboxes when you need language-specific runtimes. Prefer this over persistent environments when statelessness and isolation are required.
Side effects
- Timeout: code runs longer than the specified timeout (1-120s, default 60) and exits with code 124
- Code exceeds 1 MB UTF-8 limit — request rejected
- More than 50 input files or total file size exceeds 4 MB — request rejected
- Requested output file missing after run — path listed in missingOutputs
- Output file exceeds 1 MB — path listed in tooLargeOutputs instead of inline
- Invalid environment variable key (must match [A-Za-z_][A-Za-z0-9_]*) — request rejected
- Unsupported language value — validation error
- Payment failure via x402 protocol — 402 response returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| env | object | Environment variables; keys must match [A-Za-z_][A-Za-z0-9_]* (Daytona's rule) |
| argv | array | Command-line arguments for the program (sys.argv[1:] in Python, process.argv.slice(2) in Node) |
| code | string | The code to run (up to 1 MB of UTF-8) |
| files | object | Text files written into the work directory next to the program (up to 50, 1 MB each, 4 MB total); the entry point main.py/main.js/main.ts is reserved |
| outputs | array | Relative paths to read back after the run (up to 20); up to 1 MB each comes back base64 in outputFiles, larger in tooLargeOutputs, absent in missingOutputs |
| timeout | integer | Run timeout in seconds, 1-120 (default 60); a timed-out run answers exitCode 124 |
| language | string | "python", "javascript" or "typescript" |
Tags
x402
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