Add MCP App form deferral opt-out - #2921
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SamMorrowDrums merged 1 commit intoJul 22, 2026
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Allow clients to keep MCP App views enabled while making form-backed write tools execute directly when explicitly configured. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
Adds a user-controlled feature flag to bypass MCP App form deferral while preserving UI metadata and result views.
Changes:
- Adds and documents mcp_apps_disable_form_deferral.
- Applies the opt-out across form-backed issue and pull-request tools.
- Tests feature resolution, HTTP headers, insiders mode, and deferral behavior.
| File | Description |
|---|---|
| pkg/http/server_test.go | Tests HTTP-header and insiders behavior. |
| pkg/github/ui_capability.go | Adds the form-deferral opt-out check. |
| pkg/github/ui_capability_test.go | Tests deferral flag combinations. |
| pkg/github/feature_flags.go | Defines and allows the new flag. |
| pkg/github/feature_flags_test.go | Tests feature resolution behavior. |
| docs/server-configuration.md | Documents remote and local configuration. |
Review details
- Files reviewed: 6/6 changed files
- Comments generated: 0
- Review effort level: Medium
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SamMorrowDrums
approved these changes
Jul 22, 2026
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MCP Apps in the GitHub MCP Server are useful, but having issue and pull request tools open a form instead of performing the requested operation can be disruptive, especially in autopilot workflows where autonomous task completion is expected.
This adds the user-controllable mcp_apps_disable_form_deferral feature flag. When enabled alongside remote_mcp_ui_apps, form-backed write tools execute directly while MCP App result views and UI metadata remain enabled. HTTP clients can opt in per request through X-MCP-Features.
Testing