Use the REST API, webhooks, automation integrations, or authenticated MCP tools to bring flexible payment plans into your application and merchant workflows.
Get started in minutes with our developer-friendly API. Create payment plans, manage customers, and handle transactions with just a few lines of code.
1curl "https://partial.ly/api/payment_plan" \2 -H "Authorization: Bearer your_api_key" \3 -H "Content-Type: application/json" \4 -X POST \5 --data '{6 "amount": 1000,7 "customer": {8 "email": "john@example.com",9 "first_name": "John",10 "last_name": "Doe"11 },12 "payment_schedule": {13 "down_payment_amount": 150.75,14 "term": 3,15 "term_units": "months",16 "frequency": 1,17 "frequency_units": "weeks"18 }19 }'Find the authoritative interfaces for custom applications, event-driven workflows, automation platforms, and merchant-authorized agents.
Create and manage offers, customers, payment plans, payments, refunds, disputes, and webhooks with merchant-scoped authentication.
Learn how merchant API keys authenticate requests and how to keep credentials out of public and client-side applications.
Review HTTP status behavior and error responses before building retries, validation, or recovery into an integration.
Real-time event notifications for payment status changes, customer actions, and more.
Connect an authenticated MCP-compatible agent to merchant tools for offers, customers, plans, payments, refunds, and reporting.
Discover the MCP resource URL, authorization server, and supported read, write, and offline-access scopes programmatically.
Connect Partial.ly to 5,000+ apps without writing a single line of code.
Self-hosted workflow automation with our native n8n nodes and triggers.
Partial.ly provides an MCP endpoint for merchant-authorized agents. Compatible clients can discover tools for reading merchant data and, when the merchant grants write access, carrying out supported operations such as managing offers, customers, payment plans, payments, refunds, and webhooks.
The endpoint requires authentication. Clients can use OAuth resource discovery to locate the authorization server and request the appropriate scopes, or merchants can use a supported API-key connection. Applications should request only the access they need and obtain merchant confirmation before consequential financial or customer-data operations.
https://partial.ly/mcpmcp:read, mcp:write, and offline_accessGet your API keys and start building in minutes. Our sandbox environment lets you test without affecting real transactions.