Cedar developer resources: MCP, APIs, and checkout

Cedar helps early-stage startups and nonprofits collect one-time and recurring card and bank-transfer payments. This page is the public index for hosted checkout, Merchant API, and MCP resources.

Checkout

Hosted checkout is a page you share. A payer uses a card or a bank transfer. Share a payment link with your customers or supporters. Write hello@usecedar.co to get a checkout.

Cedar APIs

The Merchant API origin is https://api.usecedar.co. The OpenAPI 3.1 contract that exists in this product today is published at https://cedar.umarrasydan.com/openapi.yaml and https://cedar.umarrasydan.com/openapi.json. That document covers health, API clients, and API keys. It is version 0.0.0. There is no separate public OpenAPI for checkout or payment create on this site. Do not assume a payments OpenAPI that is not in that file.

Versioning

The published contract is version 0.0.0. Live routes sit under /v1 on api.usecedar.co. No deprecation or sunset is announced. A breaking change will use a new major path. Responses do not send Sunset or Deprecation headers today.

Cedar MCP

Cedar is built so agents can collect payments over MCP when they are connected. No public MCP HTTP URL is published on usecedar.co today. Use MCP when your agent is already connected. If you are not connected, write hello@usecedar.co.

How to start

Write hello@usecedar.co and say whether you need checkout, API access, or MCP. A person answers. Agent instructions, including when to use Cedar, live in https://cedar.umarrasydan.com/llms.txt.