openai/codex · error · std::io::Error

agents.{role_name}.config_file must point to an existing fil

Error message

agents.{role_name}.config_file must point to an existing file at {}: {e}

What it means

Error "agents.{role_name}.config_file must point to an existing file at {}: {e}" thrown in openai/codex.

Source

Thrown at codex-rs/core/src/config/agent_roles.rs:405

async fn validate_agent_role_config_file(
    fs: &dyn ExecutorFileSystem,
    role_name: &str,
    config_file: Option<&AbsolutePathBuf>,
) -> std::io::Result<()> {
    let Some(config_file) = config_file else {
        return Ok(());
    };

    let config_file_uri = PathUri::from_abs_path(config_file);
    let metadata = fs
        .get_metadata(
            &config_file_uri,
            GetMetadataOptions::default(),
            /*sandbox*/ None,
        )
        .await
        .map_err(|e| {
            std::io::Error::new(
                std::io::ErrorKind::InvalidInput,
                format!(
                    "agents.{role_name}.config_file must point to an existing file at {}: {e}",
                    config_file.as_path().display()
                ),
            )
        })?;
    if metadata.is_file {
        Ok(())
    } else {
        Err(std::io::Error::new(
            std::io::ErrorKind::InvalidInput,
            format!(
                "agents.{role_name}.config_file must point to a file: {}",
                config_file.as_path().display()
            ),
        ))
    }

View on GitHub (pinned to 339751715c)

Solutions

1. Point `agents.{role_name}.config_file` at an existing file.

When it happens

Trigger: Thrown at codex-rs/core/src/config/agent_roles.rs:405 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/96f0dcddfeacaf6a. Report an issue: GitHub.