* feat: add URL-mode elicitation support
The MCP spec (2025-11-25) added URL-mode elicitation alongside form mode,
allowing servers to direct users to external URLs for out-of-band
interactions (auth flows, payments, sensitive data). This implements
client-side support for rendering and handling URL-mode elicitation
requests, and announces the capability during initialization.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat: add consent dialog for URL elicitation and separate Accept button
Replace the clickable URL link with a consent dialog that displays the
URL as plain text when "Open URL" is clicked, letting the user confirm
before navigating. Add a separate "Accept" button that resolves the
elicitation without the content field, per the MCP spec.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: preserve structured McpError data in request history
When a tool call returns an MCP error (e.g. -32042 URLElicitationRequired),
the catch block was only capturing error.message (a string), discarding the
structured error.code and error.data fields.
Now McpError instances push the full JSON-RPC error structure to history:
{ error: { code, message, data } }
This means the Response panel will show the complete error including
data.elicitations for -32042, rather than just a message string.
* Revert "fix: preserve structured McpError data in request history"
This reverts commit 86f6d093f6596d6a9a52b85df24b66fa2e354d07.
* fix: enforce HTTPS-only for URL elicitation per SEP-1036
Address Claude review on #1423:
- Validate the server-supplied URL before opening it; refuse non-https
schemes (http/file/javascript/data) and malformed URLs, disabling the
"Open URL" button and showing an error state instead of calling
window.open (SEP-1036 URL Security Requirements, a spec MUST).
- Display the parsed destination host prominently in the consent dialog
to surface look-alike/embedded-credential URLs.
- Document that elicitation/complete is surfaced via the notification
panel and resolved manually (no auto-correlation), a conscious choice
per the spec's MAY/SHOULD.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: evalstate <1936278+evalstate@users.noreply.github.com>
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