Module browser 

What a browser tool call hands back from the server’s browser.

A call answers the parts the tool returned, in order: text, or an image whose bytes the MCP host hands to the CLI as their own content block. The browser is the server’s, so none of this crosses the socket; and the image’s bytes are not in this type’s JSON form either, because a screenshot is megabytes and base64 in JSON would pay a third again for it.

Re-exports

use serde::Deserialize; 🔒

use serde::Deserialize; 🔒

use serde::Serialize; 🔒

use serde::Serialize; 🔒

Structs

BrowserAudio

One packet of the page’s audio, as the controlling client plays it.

BrowserDownload

One finished download, on its way to the person’s save door.

BrowserFileAsk

A page’s file chooser, as the client’s picker reads it.

BrowserFrame

One encoded browser frame as the socket relays it.

BrowserNavState

Where the page’s history sits: what the takeover bar’s two arrows may do.

BrowserTabDialog

A page dialog holding a tab, as the strip names it.

BrowserTabList

One profile’s tabs and how the profile itself is doing.

BrowserTabRow

One tab as a client’s browser strip draws it.

BrowserUpload

One file a person chose, on its way to the server’s host as a path.

BrowserViewState

One tab’s viewer state, as every attached client sees it.

HandOff

A browser hand-off: a session asking the person at a client to act in a browser tab before it can carry on.

HandOffAnswer

One answer to a parked browser hand-off: what it means, which door sent it, and the connection that carried it.

InputModifiers

The modifier keys a person held for one input event.

ProfileKey

One org’s browser profile, <org>/<name>: two path-safe segments, and the unit every profile lookup is keyed by.

Enums

BrowserInputEvent

One input event a controlling viewer sends, in CSS pixels for the page’s viewport.

BrowserPart

One part of a browser tool’s answer.

BrowserTabState

What a tab is doing, as the strip’s mark says it.

HandOffEnding

Why a hand-off left the registry.

HandOffSource

Which door in a client produced a hand-off’s answer.

MouseAction

One pointer gesture’s kind.

Constants

ADVERTISED_TOOLS

Every browser tool the spec table advertises, by name.

DOWNLOAD_BACKLOG

How many finished downloads one profile’s broadcast keeps for a viewer that is not reading.

MAX_UPLOAD_BYTES

The most one file answer may carry across all its files, and the most files it may name.

MAX_UPLOAD_FILES

Functions

segment_refusal 🔒

One segment of a profile key: what can be a directory name and nothing else. A name is the profile charset; an org may carry any character a directory holds, but never a separator or a dot traversal.