> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://developers.upwardli.com/api-access/api-reference/consumers/bill-pay/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.upwardli.com/_mcp/server. # Bill Pay ## API Docs - Bill Pay [List Bills](https://developers.upwardli.com/api-access/api-reference/consumers/bill-pay/list-bills.md) - Bill Pay [List Bill Payment Responses](https://developers.upwardli.com/api-access/api-reference/consumers/bill-pay/list-bill-payment-responses.md) - Bill Pay [Retrieve Bill Payment Response](https://developers.upwardli.com/api-access/api-reference/consumers/bill-pay/retrieve-bill-payment-response.md) ## OpenAPI Specification The raw OpenAPI 3.1 specification for this API is available at: - [OpenAPI JSON](https://developers.upwardli.com/openapi.json) - [OpenAPI YAML](https://developers.upwardli.com/openapi.yaml)