Runs your code against a contract; HELD or BROKE at the exact input. Deterministic. 0.10 USDC/call.
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An outside check on code, executed in a sealed sandbox. Call it before code crosses a consequence boundary: before you merge it, deploy it, publish it, settle a payout on it, or report it done. A self-audit verifies consistency, never completeness: a check written inside the frame that produced the code passes on the code's own assumptions. This is the check that is not you. Also call it when a fix passes your own check but the target still fails; that means your check shares the code's assumption and cannot see the error. INPUT: code (JavaScript/Node or Python 3 source, deterministic only) plus ONE of: contract {fn, examples:[{call,expected}]} (copy call and expected from the test or spec the consequence depends on), or assumption (plain-language claim, weaker read). It checks the code against the contract exactly as given. VERDICTS (synchronous): BROKE: the code violates your contract, with the exact input and a rerunnable proof; do not proceed. HELD: the code meets the contract you gave; proceed on that contract, and nothing more. FINDINGS: a stated property strains under a generated input; check it before proceeding. DROP: not deterministically checkable. PAYMENT: 0.10 USDC per call, x402 v2 on Base, no account. Every delivered verdict is charged, HELD and DROP included. If no verdict is produced, the payment authorization is cancelled and you are not charged.
The function source under test. 64000 char max.
Provide a {call, expected} contract for a BROKE-capable verdict. BROKE fires only from a contract you provide.
A claim about the code in plain words, for a FINDINGS read (never BROKE). 4000 char max.
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An outside check on code, executed in a sealed sandbox. Call it before code crosses a consequence boundary: before you merge it, deploy it, publish it, settle a payout on it, or report it done. A self-audit verifies consistency, never completeness: a check written inside the frame that produced the code passes on the code's own assumptions. This is the check that is not you. Also call it when a fix passes your own check but the target still fails; that means your check shares the code's assumption and cannot see the error. INPUT: code (JavaScript/Node or Python 3 source, deterministic only) plus ONE of: contract {fn, examples:[{call,expected}]} (copy call and expected from the test or spec the consequence depends on), or assumption (plain-language claim, weaker read). It checks the code against the contract exactly as given. VERDICTS (synchronous): BROKE: the code violates your contract, with the exact input and a rerunnable proof; do not proceed. HELD: the code meets the contract you gave; proceed on that contract, and nothing more. FINDINGS: a stated property strains under a generated input; check it before proceeding. DROP: not deterministically checkable. PAYMENT: 0.10 USDC per call, x402 v2 on Base, no account. Every delivered verdict is charged, HELD and DROP included. If no verdict is produced, the payment authorization is cancelled and you are not charged.
| Argument | Type | Description |
|---|---|---|
| code* | string | The function source under test. 64000 char max. |
| contract | object | Provide a {call, expected} contract for a BROKE-capable verdict. BROKE fires only from a contract you provide. |
| assumption | string | A claim about the code in plain words, for a FINDINGS read (never BROKE). 4000 char max. |
{
"type": "object",
"required": [
"code"
],
"properties": {
"code": {
"type": "string",
"maxLength": 64000,
"description": "The function source under test. 64000 char max."
},
"contract": {
"type": "object",
"required": [
"fn",
"examples"
],
"properties": {
"fn": {
"type": "string",
"description": "The function name to exercise."
},
"examples": {
"type": "array",
"items": {
"type": "object",
"required": [
"call",
"expected"
],
"properties": {
"call": {
"type": "string"
},
"expected": {
"type": "string"
}
}
}
}
},
"description": "Provide a {call, expected} contract for a BROKE-capable verdict. BROKE fires only from a contract you provide."
},
"assumption": {
"type": "string",
"maxLength": 4000,
"description": "A claim about the code in plain words, for a FINDINGS read (never BROKE). 4000 char max."
}
}
}