# Quo (OpenPhone) ## Known limitations of Quo API #### Limited visibility of contacts created via API If you've created contacts in Quo via Relay.app, you may have noticed that the contacts were created successfully, but you're not able to see them in your contacts list. This is due to a limitation of the Quo API where contacts may be created via their API, but are not visible until there is an associated conversation. From Quo's documentation [here](https://www.openphone.com/docs/mdx/guides/contacts#important-behaviors-and-limitations): > **Visibility in the Quo app** > > After creating an API contact, it will only appear in the Quo app—whether in the conversation list, contact list, or search results—if there’s an associated conversation with a matching phone number. ## Working with Quo ### I'm getting an error that I am out of credits. The Quo API requires API credits to send messages. These are different from Suno AI credits (and Relay.app credits). You can see how to purchase **API messaging credits** in Quo's documentation [here](https://support.quo.com/core-concepts/administration/billing/credits-and-usage). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.relay.app/app-specific-faqs/quo.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.