> ## Documentation Index
> Fetch the complete documentation index at: https://docs.natural.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> When building application code, use `@naturalpay/sdk` for TypeScript or `naturalpay` for Python.
> When operating Natural directly for a user, use the payments MCP at `https://mcp.natural.com`.
> When searching Natural documentation, use the docs MCP at `https://docs.natural.com/mcp`.
> Use the Natural CLI for terminal and CI automation.
> Use REST only for unsupported languages or when the user explicitly requests raw HTTP.
> Start integration development and testing in the sandbox. Do not use production unless the user explicitly requests it.
> For sandbox requests that require `customerPartyId`, list customers first. Reuse only the intended fixture; otherwise create a customer.
> REST and SDK amounts use integer minor units. Payments MCP amounts use decimal strings with a required currency code.

# Expanded MCP compatibility

> Connect ChatGPT and other MCP clients through OAuth

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<p className="changelog-rail" data-date="2026-08-25" data-path="/changelog/mcp-client-support">
  August 25, 2026
</p>

Natural's production and sandbox MCP servers now support [MCP 2026-07-28](https://blog.modelcontextprotocol.io/posts/2026-07-28/) and Client ID Metadata Documents (CIMD). This expands compatibility with ChatGPT, Claude Code, Codex, Cursor, and other compatible MCP clients.

CIMD lets compatible clients connect without manual registration. Command-line clients can also use temporary localhost callback ports. Existing MCP connections continue to work.

Connect your client in the [MCP guide](/guides/platform/mcp).

<div className="changelog-pager">
  <a className="changelog-pager__link changelog-pager__link--next" href="/changelog/resource-tags">
    <span className="changelog-pager__title">Resource tags</span>
  </a>
</div>