openai/codex · error · AwsAuthError

failed to build SigV4 signing params: {0}

Error message

failed to build SigV4 signing params: {0}

What it means

Error "failed to build SigV4 signing params: {0}" thrown in openai/codex.

Source

Thrown at codex-rs/aws-auth/src/lib.rs:65

    #[error("AWS profile must be configured")]
    MissingProfile,
    #[error("AWS SDK config did not resolve a credentials provider")]
    MissingCredentialsProvider,
    #[error("AWS SDK config did not resolve a region")]
    MissingRegion,
    #[error("failed to load AWS profiles: {0}")]
    ProfileLoad(#[from] aws_config::profile::ProfileFileLoadError),
    #[error("failed to load AWS credentials: {0}")]
    Credentials(#[from] aws_credential_types::provider::error::CredentialsError),
    #[error("request URL is not a valid URI: {0}")]
    InvalidUri(#[source] http::uri::InvalidUri),
    #[error("failed to construct HTTP request for signing: {0}")]
    BuildHttpRequest(#[source] http::Error),
    #[error("request contains a non-UTF8 header value: {0}")]
    InvalidHeaderValue(#[source] http::header::ToStrError),
    #[error("failed to build signable request: {0}")]
    SigningRequest(#[source] aws_sigv4::http_request::SigningError),
    #[error("failed to build SigV4 signing params: {0}")]
    SigningParams(String),
    #[error("SigV4 signing failed: {0}")]
    SigningFailure(#[source] aws_sigv4::http_request::SigningError),
}

/// Loaded AWS auth context that can sign outbound HTTP requests.
#[derive(Clone)]
pub struct AwsAuthContext {
    credentials_provider: SharedCredentialsProvider,
    region: String,
    service: String,
}

impl std::fmt::Debug for AwsAuthContext {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.debug_struct("AwsAuthContext")
            .field("region", &self.region)
            .field("service", &self.service)

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/aws-auth/src/lib.rs:65 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/a90eed65a041af2a. Report an issue: GitHub.