codex

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pakrym-oai 7baf7e467e [codex] Route MCP file uploads through environment filesystem (#27923 )

## Why

Codex Apps tools can mark arguments with `openai/fileParams`, but the
execution path resolved and opened those files directly on the host.
That bypassed the selected turn environment and prevented annotated file
arguments from working with remote environments.

## What changed

- resolve annotated file arguments against the primary turn environment
- read file metadata and contents through that environment's sandboxed
`ExecutorFileSystem`
- reject files over the 512 MiB limit from metadata before reading or
transferring them
- retain the buffered upload-size check as defense in depth
- make the OpenAI upload API accept a filename and buffered contents
instead of owning local filesystem access
- describe the model-visible argument as a path in the primary
environment

This builds on #27927, which added `size` to internal filesystem
metadata.

## Testing

- `just test -p codex-api upload_openai_file_returns_canonical_uri`
- `just test -p codex-mcp
tool_with_model_visible_input_schema_masks_file_params`
- `just test -p codex-core mcp_openai_file`
- `just test -p codex-core
codex_apps_file_params_upload_environment_files_before_mcp_tool_call`

7baf7e467e · 2026-06-16 11:27:46 -07:00

History

endpoint

feat(core): add metadata field to ResponseItem (#28355 )

2026-06-15 15:05:28 -07:00

requests

fix: drop underscored id headers (#22193 )

2026-05-13 18:21:02 +02:00

sse

[codex] Send request-scoped turn state over WebSocket (#27996 )

2026-06-13 00:44:39 -07:00

api_bridge_tests.rs