Attachments and Input

Attach a file

EveMessageContent message = EveMessageContent.FromParts(
    EveContentPart.CreateText("Summarize this report."),
    EveContentPart.CreateFile(
        reportBytes,
        "application/pdf",
        "report.pdf"));

EveMessageResponse response = await session.SendAsync(message, cancellationToken);

Files may use inline data URLs or caller-provided URLs.

Answer a request

input.requested events are aggregated into EveTurnOutcome.InputRequests.

EveInputRequest request = outcome.InputRequests[0];
EveMessageResponse resumed = await session.RespondAsync(
    [new EveInputResponse(request.RequestId, optionId: "approve")],
    cancellationToken);

eve 0.31.0 requires a turn to carry either a message or input responses, never both. SendAsync sends a message and RespondAsync resolves pending input; passing both on one request throws ArgumentException before any network call, matching the server's HTTP 400 'message' and 'inputResponses' are mutually exclusive.

Input responses are retried for the short propagation window where an accepted durable session is not yet visible to the delivery route.

Classify a request

eve stamps every input request with a framework-owned discriminator, projected as EveInputRequest.Kind. Route on it instead of inferring intent from Display, Options, or the tool name inside Action: a session-limit prompt can arrive with a confirmation hint, two options, and a tool name, yet it is not an approve/deny tool prompt.

string answer = request.Kind switch
{
    EveInputRequestKind.ToolApproval => "approve",
    EveInputRequestKind.SessionLimit => "continue",
    EveInputRequestKind.Question => ChooseAnswer(request),
    _ => throw new NotSupportedException(
        $"Unhandled eve input request kind '{request.RawKind}'."),
};

Kind reports EveInputRequestKind.Unknown in two cases, and RawKind distinguishes them:

Kind	RawKind	Meaning
Question, ToolApproval, SessionLimit	matching wire value	A modelled request kind
Unknown	the wire value	A newer eve emitted a kind this package does not model
Unknown	null	The server predates the discriminator, such as eve 0.27.6 or earlier

A kind that is present but not a string is a malformed request and throws EveProtocolException rather than being reported as a legacy server.