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Send sandbox state through MCP tool metadata (#17763)

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## Changes

Allows MCPs to opt in to receiving sandbox config info through `_meta`
on model-initiated tool calls. This lets MCPs adhere to the thread's
sandbox if they choose to.

## Details

- Adds the `codex/sandbox-state-meta` experimental MCP capability.
- Tracks whether each MCP server advertises that capability.
- When a server opts in, `codex-core` injects the current `SandboxState`
into model-initiated MCP tool-call request `_meta`.

## Verification

- added an integration test for the capability
This commit is contained in:
aaronl-openai
2026-04-15 00:49:15 -07:00
committed by GitHub
parent e4a3612f11
commit 42528a905d
5 changed files with 209 additions and 6 deletions
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codex-rs/codex-mcp/src/lib.rs
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@@ -37,6 +37,7 @@ pub use mcp::with_codex_apps_mcp;
pub use mcp_connection_manager::CodexAppsToolsCacheKey;
pub use mcp_connection_manager::DEFAULT_STARTUP_TIMEOUT;
pub use mcp_connection_manager::MCP_SANDBOX_STATE_CAPABILITY;
pub use mcp_connection_manager::MCP_SANDBOX_STATE_META_CAPABILITY;
pub use mcp_connection_manager::MCP_SANDBOX_STATE_METHOD;
pub use mcp_connection_manager::McpConnectionManager;
pub use mcp_connection_manager::SandboxState;