Use Stent when you already know the task.

Publish an API

Publishing registers an existing HTTPS endpoint with a slug, a USDC price, a payout address, and an optional marketplace description. Registration creates an unverified endpoint until ownership is confirmed.

1. Enter the endpoint URL, public paid URL name, and per-request price.
2. Add the payout wallet that should receive publisher earnings.
3. Verify ownership with a file or response header.
4. Run the paywall check and paid request from the success screen.

No API yet?

Stent forwards to an existing HTTPS endpoint you already run — it doesn't host your API. If you don't have one, a minimal Express server is enough to try the full flow: one route returning JSON, plus the verification token from either the root file or the response header (Stent checks the file first, then the header).

const express = require("express");
const app = express();

// Your paid route — return whatever data you're selling.
app.get("/data", (_req, res) => {
  res.set("X-Stent-Verify", "YOUR-TOKEN-HERE"); // option 2: header
  res.json({ hello: "world", ts: Date.now() });
});

// Option 1: root verification file (checked first).
app.get("/stent-verification.txt", (_req, res) =>
  res.type("text/plain").send("YOUR-TOKEN-HERE")
);

app.listen(process.env.PORT || 3000);

Deploy it to a free host like Railway, Render, or Fly.io to get a public HTTPS URL, then paste that URL into step 1 of the publish wizard.

Verify ownership

Stent checks a root file first. If your hosting setup cannot serve a root file, it checks the API endpoint response header next.

app.get("/stent-verification.txt", (_req, res) =>
  res.type("text/plain").send("stent-verify-...")
);

app.get("/data", (_req, res) => {
  res.set("X-Stent-Verify", "stent-verify-...");
  res.json({ ok: true });
});

Make a paid request

Buyers use a funded EVM wallet, deposit into Gateway once, then call the paid Stent URL with a spend cap. Payments currently settle on Arc testnet.

// npm install stent-sdk
import { StentClient } from "stent-sdk";

const client = new StentClient({
  privateKey: process.env.BUYER_PRIVATE_KEY,
  spendCapUsdc: 1.00,
});

// One-time setup after funding a buyer wallet with testnet USDC:
// await client.deposit("10");

const data = await client.fetch("https://stentproxy-production.up.railway.app/your-api");
console.log(data);

Proxy API reference

These routes live on the proxy at https://stentproxy-production.up.railway.app. The dashboard uses the same routes.

Common fixes