> For the complete documentation index, see [llms.txt](https://base-tech.gitbook.io/base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://base-tech.gitbook.io/base/nodes-and-miners/miner-costs-and-fees.md). # Miner costs and fees Fee and cost estimators can be configured via the config section `[fee_estimation]`: ``` [fee_estimation] cost_estimator = naive_pessimistic fee_estimator = fuzzed_weighted_median_fee_rate fee_rate_fuzzer_fraction = 0.1 fee_rate_window_size = 5 cost_metric = proportion_dot_product log_error = true enabled = true ``` Fee and cost estimators observe network transactions to determine viable fee rates and expected execution costs. Configuration fields above allow for the selection of estimators and metrics, with default values currently being the only options. The. `log_error` field controls whether the INFO logger displays information about cost estimator accuracy as new costs are observed. Setting`enabled = false` turns off the cost estimators. These estimators are not critical components for consensus, but rather tools that miners can use to rank transactions in the mempool or for clients to determine appropriate fee rates before broadcasting transactions. The `fuzzed_weighted_median_fee_rate` uses a median estimate from a window of the fees paid in the last `fee_rate_window_size` blocks. Estimates are then randomly "fuzzed" using uniform random fuzz of size up to `fee_rate_fuzzer_fraction` of the base estimate. --- # 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://base-tech.gitbook.io/base/nodes-and-miners/miner-costs-and-fees.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.