Verify, enable, disable and count uses of Payhip software license keys (the only thing Payhip's public API covers).
Payhip ships in the w6w first-party pack. It declares 5 actions, 2 health checks, and the host runs its code in a sandbox that never sees the credential.
io.w6w.payhipPayhip sells digital products, and its public API covers one thing: the software license keys it issues with a sale. This app lets a workflow verify a key, enable or disable it, and raise or lower its use count, so an activation flow or a refund-handling flow can gate access on a real purchase.
Verify is read-only and does not consume a use. Connect with a per-product secret key (current v2 API, safe for one product) or the legacy account API key. Products, orders, customers and payouts are not exposed by Payhip’s API and are not covered.
Three routes to the same 5 actions. The Workflow tab is generated from Payhip's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.
license-disable Disable a license key, for example when a customer breaks your terms of service.
license-enable Re-enable a disabled license key. Payhip disables a key automatically when its transaction is refunded.
license-usage-decrease Remove one from a license key's use count (a deactivation). Not idempotent: a retry counts twice.
license-usage-increase Add one to a license key's use count (an activation). Not idempotent: a retry counts twice.
license-verify Look up a license key and return whether it is enabled, its buyer and its use count. Read-only: it does not count a use (use Increase License Usage for that). An unknown key, a wrong secret and a failed lookup all come back as found: false.
A workflow step names the app and the action, and the editor fills in the
connection when you pick one. This is the Step shape from the
workflow spec, carrying Payhip's real ids.
{
"manifestVersion": "2",
"name": "payhip-example",
"steps": [
{
"id": "license-disable",
"uses": {
"app": "io.w6w.payhip",
"action": "license-disable",
"connection": "conn_YOUR_CONNECTION_ID"
},
"with": {
"licenseKey": "<licenseKey>"
}
}
]
}license-disable license-enable license-usage-decrease license-usage-increase license-verify Every app-specific value here is a blank you have to fill in. An
app action is reached through the connection that authenticates it, so the
address is a connection id, not the app id — and connections belong to your account,
so a public page cannot know yours. Create one for Payhip, then fill in
the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the
parameters that action declares. The call itself is real — the shape is transcribed
from the studio's own snippet builder, which prints the same kind of blanks — but
nothing in it is specific to Payhip. The Workflow tab is where this app's
real ids are.
npm install @w6w/sdkyarn add @w6w/sdkpnpm add @w6w/sdkdeno add npm:@w6w/sdkimport { W6wClient, isActionRun } from "@w6w/sdk";
// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();
const envelope = await client.run({
urn: "conn_YOUR_CONNECTION_ID",
action: "license-disable",
payload: {
licenseKey: "<value>",
// apiVersion: "<value>",
// productLink: "<value>",
},
});
if (isActionRun(envelope)) console.log(envelope.value); npm install -g @w6w/cli w6w run conn_YOUR_CONNECTION_ID --action license-disable --payload '{"licenseKey":"<value>"}' Give an AI agent Payhip — without giving it Payhip's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.
One tool call{
"name": "w6w_invoke",
"arguments": {
"ref": "app:io.w6w.payhip#license-disable",
"input": {
"licenseKey": "<licenseKey>"
}
}
}
Every tool names its target with a single ref. The
app: form above doesn't name a connection at all — the
host resolves which of the caller's Payhip connections to sign
with, and refuses rather than guesses when the answer is ambiguous.
The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.
Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.
Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.
Payhip's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.
The MCP surface is part of the hosted platform. Payhip itself is MIT, and the runtime that executes it is source-available (FSL).
Payhip declares its own checks, so its health is a property of the app rather than something the host guesses at.