dialog

dialog

Answer a native alert, confirm or prompt dialog.

MCP tool	dialog
HTTP	POST /browser/dialog

action is one of: accept, dismiss, read, send_text. Use read to see the message without answering, accept to confirm, dismiss to cancel, and send_text with text to fill a prompt and accept it.

An open dialog blocks every other command, so if a call fails complaining about an unexpected alert, this is how you clear it.

Parameters

Name	Type	Required	Default	Notes
action	string	no	accept
text	string	no	—
session_id	string	yes over HTTP	—	The session_id returned by /browser/open. Required here.
wait_timeout	integer	no	10

Returns

Field	Type	Notes
action	string	What was done with the dialog.
message	string	The dialog's text, read before it was answered.
url	string	Current URL after the action.
title	string	Page title after the action.

Errors

Status	Means
400	The request cannot succeed as sent — a missing field, a value that was rejected, or a locator that matched nothing before the wait ran out. Do not retry it unchanged.
401	Missing or wrong bearer token.
404	No such browser session. It ended, the Grid reaped it, or the id was never real. Open a new one and retry.
500	Something failed that this server did not expect.
503	The Grid could not serve this — unreachable, or no free slot for a new browser. Worth retrying after a wait.

Over MCP the same failures arrive as a tool error.

Example

MCP

dialog()

HTTP

curl -X POST $SELENIUM_FLOW/browser/dialog \
  -H "Authorization: Bearer $TOKEN" \
  -H 'Content-Type: application/json' \
  -d '{
    "session_id": "…"
  }'

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