Code Verify
by Saylor Code Verifier in Developer tools
Run a public GitHub repo's test, lint or build script in a disposable microVM and return structured logs and the commit
https://saylorinnovations.com/api/code/verify- Price
- $0.25
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 1.5 s
- 1.9 s slowest 5%
- Last check
- Passed
- 25 min ago, next in 3 min
Reliability
Status and outage history · Atom feed · Watch with other listings
How to call it
POST https://saylorinnovations.com/api/code/verify
Each call costs $0.25 in USDC on Base, paid with the request over x402.
Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.
Example request
From the listing.
POST https://saylorinnovations.com/api/code/verify
content-type: application/json
{
"packageManager": "auto",
"ref": "master",
"repository": "https://github.com/octocat/Hello-World",
"task": "test",
"timeoutSeconds": 60
}Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
packageManager | string | No | Version 0.1 supports npm projects; auto selects npm. One of: auto, npm. Default: "auto". |
ref | string | No | Optional branch or tag to verify. |
repository | string (uri) | Yes | Public GitHub HTTPS repository URL. |
task | string | Yes | Bounded package script to run. One of: test, lint, build. |
timeoutSeconds | integer | No | Default: 60. |
Example response
The provider's example. We can't check it without paying.
{
"finishedAt": "2026-09-24T00:00:01.000Z",
"isolation": "Disposable Vercel Sandbox microVM",
"limitations": [
"Example only; use the paid endpoint for a live run."
],
"packageManager": "npm",
"repository": "https://github.com/octocat/Hello-World",
"resolvedCommit": "7fd1a60b01f91b314f59955a4e4d92f11bf82b32",
"startedAt": "2026-09-24T00:00:00.000Z",
"steps": [],
"task": "test",
"verdict": "pass",
"verificationId": "vrf_example"
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.25.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://saylorinnovations.com/api/code/verify' \
-H 'content-type: application/json' \
--data-raw '{"packageManager":"auto","ref":"master","repository":"https://github.com/octocat/Hello-World","task":"test","timeoutSeconds":60}'
# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://saylorinnovations.com/api/code/verify' \
-H 'content-type: application/json' \
--data-raw '{"packageManager":"auto","ref":"master","repository":"https://github.com/octocat/Hello-World","task":"test","timeoutSeconds":60}' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
// Pays at most $0.25 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.25" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.25 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsaylorinnovations.com%2Fapi%2Fcode%2Fverify&method=POST
const res = await pay("https://saylorinnovations.com/api/code/verify", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"packageManager": "auto",
"ref": "master",
"repository": "https://github.com/octocat/Hello-World",
"task": "test",
"timeoutSeconds": 60
}),
});
console.log(res.status, await res.text());Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client
# Pays at most $0.25 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.25"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.post(
"https://saylorinnovations.com/api/code/verify",
json={
"packageManager": "auto",
"ref": "master",
"repository": "https://github.com/octocat/Hello-World",
"task": "test",
"timeoutSeconds": 60,
},
)
print(res.status_code, res.text)Security scan
No findings
We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 25 min ago | Passed | 402 | 230 ms | $0.25 |
| 6 h ago | Passed | 402 | 1.5 s | $0.25 |
| 11 h ago | Passed | 402 | 1.9 s | $0.25 |
| 16 h ago | Passed | 402 | 1.4 s | $0.25 |
| 21 h ago | Passed | 402 | 1.5 s | $0.25 |
Show 4 older checks
| 25 h ago | Passed | 402 | 1.8 s | $0.25 |
| 30 h ago | Passed | 402 | 1.5 s | $0.25 |
| 35 h ago | Passed | 402 | 1.5 s | $0.25 |
| 39 h ago | Passed | 402 | 1.3 s | $0.25 |