Ansight.Tools.FileSystem 0.1.0-pre1

Ansight.Tools.FileSystem

Grouped sandboxed file access tool registrations for the Ansight .NET SDK.

Registered tools:

• files.list_directory
• files.read_file
• files.download_file
• files.begin_binary_download

Usage

using Ansight;
using Ansight.Tools.FileSystem;

var options = Options.CreateBuilder()
    .WithFileSystemTools()
    .WithReadOnlyToolAccess()
    .Build();

MCP-facing file transfer

files.begin_binary_download is the bridge-oriented path when an MCP caller wants the SDK to stream raw bytes over the pairing WebSocket and materialize the file in a caller-chosen local temp directory. The app SDK does not choose or know that temp path; it only returns metadata and then emits binary frames keyed by a transferId.

Binary download request arguments:

• root: optional sandbox root alias
• path: file path relative to the root
• chunkBytes: maximum bytes to include in each binary websocket frame
• downloadId: optional caller-supplied correlation id for mapping the transfer to a local temp file

Binary download response highlights:

• downloadId, transferId
• fileName, fileExtension, mimeType
• sizeBytes, lastModifiedUtc, version
• deliveryMode = websocket_binary
• wireProtocol = ansight.file-transfer.v1

The consuming MCP bridge is expected to:

• choose the temp directory and local file path
• call files.begin_binary_download
• map transferId to that local temp file
• write incoming ASFT binary frames into the chosen file until the complete frame arrives

files.download_file remains available as a JSON fallback when the caller cannot consume binary websocket frames. It stays inside the configured sandbox roots, returns best-effort file metadata for tool selection, and pages large files through ordinary tool.result payloads.

JSON fallback request arguments:

• root: optional sandbox root alias
• path: file path relative to the root
• offsetBytes: starting byte offset for the chunk
• maxBytes: maximum bytes to return for the chunk
• encoding: auto, utf8, or base64
• expectedVersion: optional version token from a prior chunk

JSON fallback response highlights:

• fileName, fileExtension, mimeType
• sizeBytes, lastModifiedUtc, version
• offsetBytes, bytesRead, hasMore, nextOffsetBytes
• contentType, encoding, and either text or base64
• nextRequest, which contains the next tool.call payload to continue the download safely

Configure additional tagged roots:

using Ansight;
using Ansight.Tools.FileSystem;

var options = Options.CreateBuilder()
    .WithFileSystemTools(fileSystem =>
    {
        fileSystem.AddRoot("logs", "/absolute/path/to/logs");
    })
    .WithReadOnlyToolAccess()
    .Build();