$context.accountId
The API owner's AWS account ID.
$context.apiId
The identifier API Gateway assigns to your API.
$context.authorizer.claims.property
A property of the claims returned from the JSON Web Token (JWT) after the method caller is successfully authenticated, such as $context.authorizer.claims.username. For more information, see Control access to HTTP APIs with JWT authorizers in API Gateway.
Calling $context.authorizer.claims returns null.
$context.authorizer.error The error message returned from an authorizer. $context.authorizer.property
The value of the specified key-value pair of the context map returned from an API Gateway Lambda authorizer function. For example, if the authorizer returns the following context map:
"context" : {
"key": "value",
"numKey": 1,
"boolKey": true
}calling $context.authorizer.key returns the "value" string, calling $context.authorizer.numKey returns the 1, and calling $context.authorizer.boolKey returns true.
$context.awsEndpointRequestId
The AWS endpoint's request ID from the x-amz-request-id or x-amzn-requestId header.
$context.awsEndpointRequestId2
The AWS endpoint's request ID from the x-amz-id-2 header.
$context.customDomain.basePathMatched
The path for an API mapping that an incoming request matched. Applicable when a client uses a custom domain name to access an API. For example if a client sends a request to https://api.example.com/v1/orders/1234, and the request matches the API mapping with the path v1/orders, the value is v1/orders. To learn more, see Map API stages to a custom domain name for HTTP APIs.
$context.dataProcessed The amount of data processed in bytes. $context.domainName
The full domain name used to invoke the API. This should be the same as the incoming Host header.
$context.domainPrefix
The first label of the $context.domainName.
$context.error.message
A string that contains an API Gateway error message.
$context.error.messageString The quoted value of $context.error.message, namely "$context.error.message". $context.error.responseType
A type of GatewayResponse. For more information, see Monitor WebSocket API execution with CloudWatch metrics and Setting up gateway responses to customize error responses.
$context.extendedRequestId Equivalent to $context.requestId. $context.httpMethod
The HTTP method used. Valid values include: DELETE, GET, HEAD, OPTIONS, PATCH, POST, and PUT.
$context.identity.accountId
The AWS account ID associated with the request. Supported for routes that use IAM authorization.
$context.identity.caller
The principal identifier of the caller that signed the request. Supported for routes that use IAM authorization.
$context.identity.cognitoAuthenticationProvider
A comma-separated list of all the Amazon Cognito authentication providers used by the caller making the request. Available only if the request was signed with Amazon Cognito credentials.
For example, for an identity from an Amazon Cognito user pool, cognito-idp. region.amazonaws.com/user_pool_id,cognito-idp.region.amazonaws.com/user_pool_id:CognitoSignIn:token subject claim
For information about the available Amazon Cognito authentication providers, see Using Federated Identities in the Amazon Cognito Developer Guide.
$context.identity.cognitoAuthenticationType
The Amazon Cognito authentication type of the caller making the request. Available only if the request was signed with Amazon Cognito credentials. Possible values include authenticated for authenticated identities and unauthenticated for unauthenticated identities.
$context.identity.cognitoIdentityId
The Amazon Cognito identity ID of the caller making the request. Available only if the request was signed with Amazon Cognito credentials.
$context.identity.cognitoIdentityPoolId
The Amazon Cognito identity pool ID of the caller making the request. Available only if the request was signed with Amazon Cognito credentials.
$context.identity.principalOrgId
The AWS organization ID. Supported for routes that use IAM authorization.
$context.identity.clientCert.clientCertPem
The PEM-encoded client certificate that the client presented during mutual TLS authentication. Present when a client accesses an API by using a custom domain name that has mutual TLS enabled.
$context.identity.clientCert.subjectDN
The distinguished name of the subject of the certificate that a client presents. Present when a client accesses an API by using a custom domain name that has mutual TLS enabled.
$context.identity.clientCert.issuerDN
The distinguished name of the issuer of the certificate that a client presents. Present when a client accesses an API by using a custom domain name that has mutual TLS enabled.
$context.identity.clientCert.serialNumber
The serial number of the certificate. Present when a client accesses an API by using a custom domain name that has mutual TLS enabled.
$context.identity.clientCert.validity.notBefore
The date before which the certificate is invalid. Present when a client accesses an API by using a custom domain name that has mutual TLS enabled.
$context.identity.clientCert.validity.notAfter
The date after which the certificate is invalid. Present when a client accesses an API by using a custom domain name that has mutual TLS enabled.
$context.identity.sourceIp
The source IP address of the immediate TCP connection making the request to API Gateway endpoint.
$context.identity.user
The principal identifier of the user that will be authorized against resource access. Supported for routes that use IAM authorization.
$context.identity.userAgent
The User-Agent header of the API caller.
$context.identity.userArn
The Amazon Resource Name (ARN) of the effective user identified after authentication. Supported for routes that use IAM authorization. For more information, see https://docs.aws.amazon.com/IAM/latest/UserGuide/id_users.html.
$context.integration.error The error message returned from an integration. Equivalent to $context.integrationErrorMessage. $context.integration.integrationStatus For Lambda proxy integration, the status code returned from AWS Lambda, not from the backend Lambda function code. $context.integration.latency The integration latency in ms. Equivalent to $context.integrationLatency. $context.integration.requestId The AWS endpoint's request ID. Equivalent to $context.awsEndpointRequestId. $context.integration.status The status code returned from an integration. For Lambda proxy integrations, this is the status code that your Lambda function code returns. $context.integrationErrorMessage
A string that contains an integration error message.
$context.integrationLatency The integration latency in ms. $context.integrationStatus For Lambda proxy integration, this parameter represents the status code returned from AWS Lambda, not from the backend Lambda function. $context.path The request path. For example, /{stage}/root/child. $context.protocol The request protocol, for example, HTTP/1.1.
Note
API Gateway APIs can accept HTTP/2 requests, but API Gateway sends requests to backend integrations using HTTP/1.1. As a result, the request protocol is logged as HTTP/1.1 even if a client sends a request that uses HTTP/2.
$context.requestId
The ID that API Gateway assigns to the API request.
$context.requestTime The CLF-formatted request time (dd/MMM/yyyy:HH:mm:ss +-hhmm). $context.requestTimeEpoch The Epoch-formatted request time. $context.responseLatency The response latency in ms. $context.responseLength The response payload length in bytes. $context.routeKey
The route key of the API request, for example /pets.
$context.stage
The deployment stage of the API request (for example, beta or prod).
$context.status The method response status.
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