diff --git a/LICENSE b/LICENSE
deleted file mode 100644
index 85c1927..0000000
--- a/LICENSE
+++ /dev/null
@@ -1,2 +0,0 @@
-YEAR: 2024
-COPYRIGHT HOLDER: ollamar authors
diff --git a/R/model_options.R b/R/model_options.R
new file mode 100644
index 0000000..f040191
--- /dev/null
+++ b/R/model_options.R
@@ -0,0 +1,133 @@
+# https://github.com/ollama/ollama/blob/main/docs/modelfile.md#valid-parameters-and-values
+model_options <- list(
+    mirostat = list(
+        description = "Enable Mirostat sampling for controlling perplexity.",
+        default_value = 0
+    ),
+    mirostat_eta = list(
+        description = "Influences how quickly the algorithm responds to feedback from the generated text. A lower learning rate will result in slower adjustments, while a higher learning rate will make the algorithm more responsive.",
+        default_value = 0.1
+    ),
+    mirostat_tau = list(
+        description = "Controls the balance between coherence and diversity of the output. A lower value will result in more focused and coherent text.",
+        default_value = 5.0
+    ),
+    num_ctx = list(
+        description = "Sets the size of the context window used to generate the next token.",
+        default_value = 2048
+    ),
+    repeat_last_n = list(
+        description = "Sets how far back for the model to look back to prevent repetition.",
+        default_value = 64
+    ),
+    repeat_penalty = list(
+        description = "Sets how strongly to penalize repetitions. A higher value (e.g., 1.5) will penalize repetitions more strongly, while a lower value (e.g., 0.9) will be more lenient.",
+        default_value = 1.1
+    ),
+    temperature = list(
+        description = "The temperature of the model. Increasing the temperature will make the model answer more creatively.",
+        default_value = 0.8
+    ),
+    seed = list(
+        description = "Sets the random number seed to use for generation. Setting this to a specific number will make the model generate the same text for the same prompt.",
+        default_value = 0
+    ),
+    stop = list(
+        description = "Sets the stop sequences to use. When this pattern is encountered the LLM will stop generating text and return. Multiple stop patterns may be set by specifying multiple separate `stop` parameters in a modelfile.",
+        default_value = NULL
+    ),
+    tfs_z = list(
+        description = "Tail free sampling is used to reduce the impact of less probable tokens from the output. A higher value (e.g., 2.0) will reduce the impact more, while a value of 1.0 disables this setting.",
+        default_value = 1
+    ),
+    num_predict = list(
+        description = "Maximum number of tokens to predict when generating text. (Default: 128, -1 = infinite generation, -2 = fill context)",
+        default_value = 128
+    ),
+    top_k = list(
+        description = "Reduces the probability of generating nonsense. A higher value (e.g. 100) will give more diverse answers, while a lower value (e.g. 10) will be more conservative.",
+        default_value = 40
+    ),
+    top_p = list(
+        description = "Works together with top-k. A higher value (e.g., 0.95) will lead to more diverse text, while a lower value (e.g., 0.5) will generate more focused and conservative text.",
+        default_value = 0.9
+    )
+)
+
+check_option_valid <- function(opt) {
+    return(opt %in% names(model_options))
+}
+
+
+
+check_options <- function(opts = NULL) {
+    if (is.null(opts)) {
+        return(names(model_options))
+    }
+
+    list_validity <- list(valid_options = character(), invalid_options = character())
+    for (opt in opts) {
+        if (check_option_valid(opt)) {
+            list_validity$valid_options <- c(list_validity$valid_options, opt)
+        } else {
+            list_validity$invalid_options <- c(list_validity$invalid_options, opt)
+        }
+    }
+    return(list_validity)
+}
+
+
+search_options <- function(query) {
+    matching_options <- list()
+    option_names <- names(model_options)
+    for (option in option_names) {
+        if (grepl(query, option, ignore.case = TRUE)) {
+            matching_options[[option]] <- model_options[[option]]
+            next
+        }
+        desc <- model_options[[option]]$description
+        if (grepl(query, desc, ignore.case = TRUE)) {
+            matching_options[[option]] <- model_options[[option]]
+            next
+        }
+    }
+    if (length(matching_options) == 0) {
+        message("No matching options found")
+    } else {
+        message(paste0("Matching options: ", paste(names(matching_options), collapse = ", ")))
+    }
+    return(matching_options)
+}
+
+
+
+
+
+
+#' Validate additional options or parameters provided to the API call
+#'
+#' @param ... Additional options or parameters provided to the API call
+#'
+#' @return TRUE if all additional options are valid, FALSE otherwise
+#' @examples
+#' validate_options(mirostat = 1, mirostat_eta = 0.2, num_ctx = 1024)
+#' validate_options(mirostat = 1, mirostat_eta = 0.2, invalid_opt = 1024)
+validate_options <- function(...) {
+    opts <- list(...)
+    opts_validity <- check_options(names(opts))
+    if (length(opts_validity$invalid_options > 0)) {
+        invalid <- opts_validity$invalid_options
+        valid <- opts_validity$valid_options
+        cat(crayon::green( paste0("Valid options: ", paste0(valid, collapse = ", "), "\n") ) )
+        cat(crayon::red( paste0("Invalid options: ", paste0(invalid, collapse = ", ", "\n") ) ) )
+        cat(("See available options with check_options() or model_options.\nSee also https://github.com/ollama/ollama/blob/main/docs/modelfile.md#parameter\n"))
+        return(FALSE)
+    }
+    # cat(crayon::green("All additional options provided to ... are valid\n"))
+    return(TRUE)
+}
+
+
+validate_options(mirostat = 1, mirostat_eta = 0.2, num_ctx = 1024)
+xx <- validate_options(mirostat = 1, mirostat_eta = 0.2, abc = 1024)
+
diff --git a/R/ollama.R b/R/ollama.R
index 730bd13..d557e25 100644
--- a/R/ollama.R
+++ b/R/ollama.R
@@ -7,6 +7,7 @@ package_config <- list(
 )
 
 
+
 #' Create a httr2 request object.
 #'
 #' Creates a httr2 request object with base URL, headers and endpoint. Used by other functions in the package and not intended to be used directly.
diff --git a/R/utils.R b/R/utils.R
index 29870bb..541bbf4 100644
--- a/R/utils.R
+++ b/R/utils.R
@@ -222,3 +222,8 @@ delete_message <- function(x, position = -1) {
     if (position < 0) position <- length(x) + position + 1
     return(x[-position])
 }
+
+
+
+
+