> For the complete documentation index, see [llms.txt](https://docs.chainupcloud.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chainupcloud.com/introduction/products/blockchain-api.md). # Blockchain API ChainUp Cloud supports each network's common APIs so you can focus on building while benefiting from the same endpoints and methods available at the node level. There are no lock-ins, simply benefit from high scalability while we take care of maintaining the level of service necessary for your product to thrive. The common network APIs should only be the beginning of the journey for Web3 developers. ChainUp Cloud is developing Advanced APIs to help developers unlock the unique features and attributes of Web3 protocols. Our suite of Advanced APIs allows developers to create powerful applications at a fraction of the cost, with the potential to capitalize on blockchain-native use cases. Advanced APIs complement the common APIs to give its users superpowers in order to create the Web3's killer apps. ## Difference Between Quotas and Rate Limits A Quota measures how many total requests you can make across *all your services* in one day. A Rate Limit measures how many requests you can make against a *specific endpoint* in one second. If you go over your Quota for the day, you'll need to upgrade your plan. If you hit a Rate Limit for an endpoint, you'll need to retry your requests. The goal of a Quota is to allow customers to pay for what they use, similar to a cell phone plan. The goal of a Rate Limit is to ensure quality of service, and most users will never come close to hitting a Rate Limit. ## How Do I Know When I've Hit My Quota? ChainUp Cloud will return status code `HTTP 429` "Too Many Requests" when you exceed your Quota. To confirm this, you can view your current Quota usage on your ChainUp Cloud Dashboard. ![Quota usage](/files/z8d7awa6HnwxCKnEjMOQ) You can upgrade your plan to increase your Quota. ## How Do I Know When I'm Getting Rate Limited? ChainUp Cloud will return status code `HTTP 429` "Too Many Requests" when you are getting rate limited for a specific endpoint. If this happens, you can confirm on your ChainUp Cloud Dashboard that you are not over your Quota and that you are instead getting rate limited. If you are getting rate limited, you will need to retry your requests in your application. Since Rate Limits are measured per second, you could simply wait for a second and try again. If you need more information about quotas and rate limits, join [**our community**](https://t.me/ChainUp2022) and one of our experts will help you out! --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://docs.chainupcloud.com/introduction/products/blockchain-api.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.