# Node & Fees A node (blocks) is what graphs are made of, it describes the structure of your execution path. We prebuilt a set of nodes in the GraphLinq engine so that you can execute by passing through your needed parameters. This means that you can launch on the Engine a set of blocks that automate a task without coding any of the business logic needed. To avoid having an overwhelm or a congested network we have to apply fees for execution (known as Gas on GraphLinq Chain) each block type has a different cost of execution within its Cycle optimized by the network and CPU consumed by itself. --- # 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.graphlinq.io/dev-tooling/graphs/node-and-fees.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.