> This page is for version v1 (default).
> For other versions, use one of these documentation indexes:
> - v1 (default): https://developers.truemed.com/v-1/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.truemed.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.truemed.com/_mcp/server.

# API reference

> REST API reference for Truemed - payment sessions, payment tokens, qualification sessions, product catalog, disputes, and reconciliation.

The Truemed API is a REST API served from `https://api.truemed.com`
(production) and `https://dev-api.truemed.com` (development). Requests and
responses use JSON, and every endpoint is authenticated with your API key.

## Before you call the API

* [Before you begin](/guides/setup/api/payment-sessions/before-you-begin) covers API
  keys, environments, and test data.
* [Accept your first payment](/guides/setup/api/payment-sessions/accept-your-first-payment)
  walks through a full checkout end to end.
* [Webhooks](/guides/setup/api/resources/webhooks) explains how event delivery,
  retries, and signatures work.

## OpenAPI spec

The full spec is available at [`/openapi.json`](/openapi.json) — use it with
Postman, SDK generators, or AI agents.

Questions? Email [api-support@truemed.com](mailto:api-support@truemed.com).