Content types received from and sent to a chatbot

Use these functions if you're writing a package that extends ellmer and need to customise methods for various types of content. For normal use, see content_image_url() and friends.

ellmer abstracts away differences in the way that different Providers represent various types of content, allowing you to more easily write code that works with any chatbot. This set of classes represents types of content that can be either sent to and received from a provider:

ContentText: simple text (often in markdown format). This is the only type of content that can be streamed live as it's received.
ContentImageRemote and ContentImageInline: images, either as a pointer to a remote URL or included inline in the object. See content_image_file() and friends for convenient ways to construct these objects.
ContentToolRequest: a request to perform a tool call (sent by the assistant).
ContentToolResult: the result of calling the tool (sent by the user). This object is automatically created from the value returned by calling the tool() function. Alternatively, expert users can return a ContentToolResult from a tool() function to include additional data or to customize the display of the result.

Content()

ContentText(text = stop("Required"))

ContentImage()

ContentImageRemote(url = stop("Required"), detail = "")

ContentImageInline(type = stop("Required"), data = NULL)

ContentToolRequest(
  id = stop("Required"),
  name = stop("Required"),
  arguments = list(),
  tool = NULL
)

ContentToolResult(value = NULL, error = NULL, extra = list(), request = NULL)

ContentThinking(thinking = stop("Required"), extra = list())

ContentPDF(type = stop("Required"), data = stop("Required"))

Arguments

text: A single string.
url: URL to a remote image.
detail: Not currently used.
type: MIME type of the image.
data: Base64 encoded image data.
id: Tool call id (used to associate a request and a result). Automatically managed by ellmer.
name: Function name
arguments: Named list of arguments to call the function with.
tool: ellmer automatically matches a tool request to the tools defined for the chatbot. If NULL, the request did not match a defined tool.
value: The results of calling the tool function, if it succeeded.
error: The error message, as a string, or the error condition thrown as a result of a failure when calling the tool function. Must be NULL when the tool call is successful.
extra: Additional data.
request: The ContentToolRequest associated with the tool result, automatically added by ellmer when evaluating the tool call.
thinking: The text of the thinking output.

Value

S7 objects that all inherit from Content

Examples

Content()
#> <ellmer::Content>
ContentText("Tell me a joke")
#> <ellmer::ContentText>
#>  @ text: chr "Tell me a joke"
ContentImageRemote("https://www.r-project.org/Rlogo.png")
#> <ellmer::ContentImageRemote>
#>  @ url   : chr "https://www.r-project.org/Rlogo.png"
#>  @ detail: chr ""
ContentToolRequest(id = "abc", name = "mean", arguments = list(x = 1:5))
#> <ellmer::ContentToolRequest>
#>  @ id       : chr "abc"
#>  @ name     : chr "mean"
#>  @ arguments:List of 1
#>  .. $ x: int [1:5] 1 2 3 4 5
#>  @ tool     : NULL