Sandboxed JS execution ($0.05) — run a JavaScript snippet in an isolated child p
Sandboxed JS execution ($0.05) — run a JavaScript snippet in an isolated child process (64MB heap cap, no network, no filesystem) and get the result plus captured logs. Pragmatic sandbox, not a hardened enclave. Toll: $0.05 USDC on Base or Solana.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
172 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://mini-tollbooth.onrender.com/code-run
| Category | Code and developer |
|---|---|
| Provider host | mini-tollbooth.onrender.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.05 | 172 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"code": "Math.max(3, 7);"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"code": {
"description": "JavaScript snippet to run (max 50KB). Synchronous JS only in v1.",
"type": "string"
},
"lang": {
"description": "Language \u2014 only \"js\" is supported in v1.",
"type": "string"
},
"max_output_chars": {
"description": "Cap for captured logs + result (100\u201320000, default 4000).",
"type": "string"
},
"timeout_ms": {
"description": "Max wall-clock ms before the sandbox is killed (1000\u201310000, default 5000).",
"type": "string"
}
},
"required": [
"code"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}