Tuppence docs

Tuppence gets you paid. Pick what you want to do, and that page shows you how.

I want to…	Start here
Sell something without building a website	Payment links
Take payments on my own website or app	Payments
Charge every month	Subscriptions
Take bookings and deposits	Bookings
Pull money from a UK bank account	Direct Debit (UK businesses only for now) (SEPA Direct Debit in Europe)
Let an AI agent pay or get paid	MCP server, HTTP 402
Take payments for other businesses	Connect
Take payments in person	Point of sale
Get my sales, fees and payouts into Xero, QuickBooks, FreeAgent or Sage	Accounting integrations

QuickstartYour first payment link in two minutes, in curl, Node or Python.

Not sure? AskSay what you're building and the docs assistant points you to the right page.

Payment links are the quickest start. You can mix any of these on one account. Use cases →

Build it with Claude or Codex

Give your coding agent Tuppence's rules and recipes. It can then add checkout, subscriptions and webhooks to your app, and create payment links through our MCP server.

Claude Code

Install it as a skill. Claude uses it whenever you ask about payments, in any project.

mkdir -p ~/.claude/skills/tuppence && curl -fsSL https://tuppence.ai/skill.md -o ~/.claude/skills/tuppence/SKILL.md

Codex

Add it to your project's AGENTS.md, which Codex reads on every task.

curl -fsS https://docs.tuppence.ai/docs/AGENTS.md >> AGENTS.md

Any agent

Copy the guide and paste it into your agent's instructions, rules or project knowledge.

Copy SKILL.mdCopy AGENTS.mdView the guideCreate links from the chat (MCP) →

Rules that hold everywhere

Modes	sk_test_… moves no money; sk_live_… does. Same API, same code. Testing →
Amounts	Integers in the minor unit: 2000 is £20.00 or $20.00. Never a float.
Retries	Send Idempotency-Key on every write; a retry returns the first result. Errors →
Versions	Dated, pinned per account. Send Tuppence-Version: 2026-09-20 to choose. Versioning →
Errors	Branch on code, never message.
Events	Signed webhooks tell your server what happened. Webhooks →

CI runs every runnable code block here against the real API on every change.

Running a business rather than building one? The help centre covers the dashboard, the app and the till, without code.