Hasp

A shop that wants crypto has to pick which chains and coins to accept, and its buyers rarely hold the right one. Hasp is one script tag. The buyer pays with whatever they hold, on NEAR, Ethereum, Base, Arbitrum, Solana, Bitcoin or dozens of other chains, and the shop receives the exact USDC it asked for in its NEAR account. NEAR Intents does the conversion and the settlement. Hasp has no server, no sign-up and no keys, and never holds the funds.

<script src="https://thehasp.vercel.app/checkout.js"
        data-to="yourname.near" data-usd="5" data-item="A coffee"></script>

Watch the 90-second demo: x.com/thesithunyein/status/2120411134130065516

It is the "universal checkout widget" from Illia Polosukhin's list of things to build on NEAR (3 October 2026): customers pay through NEAR Intents with whatever wallet and chain holds their assets.

Tracks: Agent Economy (agents) and Real-World Money (realworld).

The problem, and who it is for

A shop that wants crypto has to guess which coin its buyers hold, and usually guesses wrong. One buyer has ETH on Arbitrum, the next has SOL, the next only NEAR. Listing five wallet addresses for five chains is confusing, and getting paid in a coin whose price moves is a risk for the seller. Most buyers leave before they pay.

With Hasp, the buyer pays with whatever they already hold and the seller always receives the same thing: the exact price, in USDC, in one NEAR account.

Who	Why Hasp fits
Freelancers and creators paid from abroad: designers, developers, writers, artists	The client pays in any coin; the freelancer gets stable USDC, not a coin whose price swings
Small online sellers with a crypto-holding audience: digital products, courses, templates	One line on any site (WordPress, Webflow, plain HTML), no payment company to sign up with, no monthly fee
Creators and open-source projects taking tips	One "support me" button for every coin, instead of a list of addresses per chain
Web3 projects, DAOs and events selling tickets, memberships or services	Their community holds many chains; they want one currency in one account
People where card payments are hard to get	Anyone with crypto can pay them, and they receive dollars (USDC) with no bank in the middle. Local rules on receiving crypto still apply.
AI agents buying services such as an API or a dataset	They pay at any Hasp checkout, inside limits a person sets (see For AI agents)

Who it is not for: shops whose buyers pay by card (a card processor is simpler for them), and shops that need invoices or automatic order fulfilment, which Hasp does not do yet.

Try it

No wallet is needed for steps 1 to 3. Nothing moves until a buyer sends coins to the address the quote gives.

Do	See
1. Open the example shop, choose Pay $1, pick a coin, give a refund address on that coin's chain	A one-time deposit address from NEAR Intents and the exact amount to send, for example 0.286647 NEAR. The status line reads "Waiting for your payment…". The page is plain HTML with no framework: two <script> tags, two prices.
2. Open thehasp.vercel.app and, under Get a button, enter a NEAR account and a price	The line to paste, and a live preview of the button it makes
3. Under Pricing and FAQ on the same page	What a shop pays (nothing to Hasp, 0.25% to NEAR Intents inside the buyer's price) and how refunds work
3b. Open thehasp.vercel.app/payments and enter a NEAR account that has been paid, for example sithunyein.near once a payment has settled	Every USDC payment NEAR Intents sent to that account, newest first, with totals and a NearBlocks receipt for each
4. node scripts/hasp-agent.mjs buy --to sithunyein.near --usd 1 --item "A coffee"	rule allows it, then a live mainnet quote, then dry run nothing sent
5. node scripts/hasp-agent.mjs buy --to stranger.near --usd 1	STOPPED: stranger.near is not on the agent's list of merchants, exit code 2, no quote asked for
6. npm ci && npm test	17 tests pass: prices, accounts, refund addresses, the coin list, the exact quote, the agent's rule

Steps 4 and 5 also run on every push in CI: open a run and read the notices "Agent dry run (mainnet quote, nothing sent)" and "Agent stopped by its rule (exit 2)".

Add it to a page

<!-- One button where the tag is -->
<script src="https://thehasp.vercel.app/checkout.js"
        data-to="yourname.near" data-usd="5" data-item="A coffee" data-label="Buy a coffee"></script>

<!-- Or several, anywhere, with one script tag -->
<div data-hasp-to="yourname.near" data-hasp-usd="3" data-hasp-item="Lunch"></div>
<script src="https://thehasp.vercel.app/checkout.js"></script>

Attribute	Meaning
data-to	Your NEAR account. The USDC is paid here.
data-usd	The price in dollars, like 5 or 4.50, up to 10,000. You receive exactly this much USDC.
data-item	Optional. What the buyer is paying for.
data-label	Optional. The button text. Default: Pay $5.

From JavaScript: Hasp.open({ to: "yourname.near", usd: "5", item: "A coffee" }). When NEAR Intents reports SUCCESS, the button fires a hasp:paid event with { to, usd, item, depositAddress, amountOut }. The event comes from the buyer's browser, so before you ship anything, confirm the payment yourself: GET https://1click.chaindefuser.com/v0/status?depositAddress=... must say SUCCESS, or check your NEAR account.

以上为 README 的开头部分。其余内容请阅读原文。 查看完整 README ↗