> For the complete documentation index, see [llms.txt](https://docs.graphlinq.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.graphlinq.io/dev-tooling/graphs/node-and-fees.md).

# 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.