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victor-openai b71af39fe6 Preserve MCP App UI metadata in tool-call events and history (#45805 )

## Why

Clients need widget presentation details to render MCP Apps without waiting for the full MCP catalog, including when replaying saved history.

## What changed

- Add `mcpToolCall.mcpAppUi` with the invoked descriptor's `resourceUri` and `preferredModelDisplayMode`, and carry it through tool-call events and saved history.
- Support `fullscreen` and default to `inline` when the display preference is missing or unsupported.
- Keep existing resource URI fields for compatibility. Leave `mcpAppUi` null for older history and tools that declare widgets only in result metadata, where clients still use catalog discovery.
- Update protocol schemas, TypeScript and Python types, and app-server documentation.

## Testing

Add parameterized integration coverage for fullscreen, missing and unsupported preferences, legacy URI metadata, and result-only widgets, verifying consistent tool events and preservation across session resume.

GitOrigin-RevId: 2a9bed804dcea8c2b4903b8406fa6710681f7f5e

2026-09-15 22:52:56 +00:00

src

Preserve MCP App UI metadata in tool-call events and history (#45805 )

2026-09-15 22:52:56 +00:00

BUILD.bazel

build: run buildifier from just fmt (#28125 )

2026-06-13 21:43:39 -07:00

Cargo.toml

Sanitize credentials from Git remote metadata (#40713 )

2026-08-25 21:34:05 +00:00

README.md

fix: separate codex mcp into codex mcp-server and codex app-server (#4471 )

2025-09-30 07:06:18 +00:00

README.md

codex-protocol

This crate defines the "types" for the protocol used by Codex CLI, which includes both "internal types" for communication between codex-core and codex-tui, as well as "external types" used with codex app-server.

This crate should have minimal dependencies.

Ideally, we should avoid "material business logic" in this crate, as we can always introduce Ext-style traits to add functionality to types in other crates.