Three public APIs · Free browser tools

Build payments, sites, and secure links with Paying.co APIs.

One developer surface, three focused APIs. Generate payment links, spin up AI-powered websites, and create secure expiring links — each with a clean REST interface, official SDKs, sandbox keys, and real documentation.

Get API keys → Read quick-start →
Bearer auth · Sandbox + live keys · Official SDKs · MCP-ready products
quick-start.sh
# Create a payment link with AskPay
curl https://api.ask.paying.co/v1/links \
 -H "Authorization: Bearer $PAYING_KEY" \
 -d '{"amount":4200,"currency":"usd",
  "delivery":["qr","email","sms"]}'

→ hosted link · QR image · delivery status
3public APIs
5+browser engineering tools
Sandboxbefore live
SDKsmaintained on GitHub
01 · The APIs

Pick the API for the job.

Each API is independent. Use one, or combine all three in the same workflow.

ASKPAY · PAYMENTS

Payment links from one request

Create hosted links delivered by QR code, email, SMS, or embeddable button, then reconcile with webhooks.

 LANDED · AI SITES

Websites as an API call

Generate, modify, list and publish AI-powered websites from prompts or predefined templates.

 PUNY · SECURE LINKS

Share sensitive information safely

Create expiring links, password-protected shares, allowlisted access and self-destructing capsules.
02 · Developer tools

Payment engineering tools, live in your browser.

TLV, AID/RID, APDU, Luhn/PAN and ISO 8583 utilities built by the team behind 131+ EMV Level 3 certifications. Everything runs client-side.

TLV

EMV TLV Parser

Decode BER-TLV payment data into a labeled, interpretable tree.

 AID / RID

Scheme decoder

Identify card schemes and registered providers from application identifiers.

 APDU

APDU Inspector

Break down commands, responses and status words.

 ISO 8583

Message decoder

Parse MTI, bitmaps and present data elements.
See all tools, including Luhn/PAN validator →
03 · Quick start

From key to first call in minutes.

01

Create an account

Grab sandbox and live keys from the product dashboard.

02

Install an SDK

Use the official library for your language from the PayingCo GitHub organization.

03

Make the request

Build against sandbox, then switch to live credentials when you ship.

04 · Resources

Everything you need to ship.

API reference, SDKs, changelog, system status and support — without making developers hunt across the site.

DOCSQuick-starts and implementation guides SDKAskPay · Landed · Puny STATUSLive uptime and incident history CHANGELOGVersioned product updates
START BUILDING

Grab a sandbox key and make the first call.

Every API is designed to be useful independently, with straightforward auth and a short path from documentation to working request.

Get API keys →