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PyPI · #17 most downloaded on PyPI
Low-level, data-driven core of boto 3.
Last release 4 days ago
02 Oct 2026
Ships on a steady schedule
a new release about every 8 days
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
14 years old
2530 releases · first in 2012
feature:sms: Update sms client to latest version
feature:sms: Update sms client to latest version
feature:ecs: Update ecs client to latest version
bugfix:Waiters: Add back missing fail fail states to cloudformation waiters (#1056 __)
bugfix:Waiters: Add back missing fail fail states to cloudformation waiters (#1056)
feature:waf: Update waf client to latest version
feature:budgets: Update budgets client to latest version
One column per quarter.
feature:cloudfront: Update cloudfront client to latest version
feature:cloudfront: Update cloudfront client to latest version
feature:iot: Update iot client to latest version
feature:config: Update config client to latest version
feature:rds: Update rds client to latest version
feature:kinesisanalytics: Update kinesisanalytics client to latest version
feature:route53: Update route53 client to latest version
feature:route53: Update route53 client to latest version
feature:regions: Add support us-east-2
feature:elasticbeanstalk: Update elasticbeanstalk client to latest version
feature:elasticbeanstalk: Update elasticbeanstalk client to latest version
feature:acm: Update acm client to latest version
feature:gamelift: Update gamelift client to latest version
feature:ecr: Update ecr client to latest version
feature:ecr: Update ecr client to latest version
feature:cloudfront: Update cloudfront client to latest version
feature:codedeploy: Update codedeploy client to latest version
feature:sns: Update sns client to latest version
feature:apigateway: Update apigateway client to latest version
feature:Client Meta: Add partition to client meta object (#1027)
feature:elasticache: Update elasticache client to latest version
feature:kms: Update kms client to latest version
feature:rds: Update rds client to latest version
feature:gamelift: Update gamelift client to latest version
feature:opsworks: Update opsworks client to latest version
feature:opsworks: Update opsworks client to latest version
feature:devicefarm: Update devicefarm client to latest version
feature:kms: Update kms client to latest version
feature:s3: Update s3 client to latest version
feature:waf: Update waf client to latest version
feature:cognito-idp: Update cognito-idp client to latest version
Nothing published for this version
feature:snowball: Update snowball client to latest version
feature:snowball: Update snowball client to latest version
feature:s3: Update s3 client to latest version
feature:ec2: Update ec2 client to latest version
feature:cloudformation: Update cloudformation client to latest version
feature:cloudformation: Update cloudformation client to latest version
feature:codepipeline: Update codepipeline client to latest version
feature:kms: Update kms client to latest version
feature:efs: Update efs client to latest version
feature:redshift: Update redshift client to latest version
feature:redshift: Update redshift client to latest version
feature:Stubber: Add ability to specify expected params when using add_client_error (#1025)
feature:emr: Update emr client to latest version
feature:codedeploy: Update codedeploy client to latest version
feature:rds: Update rds client to latest version
feature:iot: Update iot client to latest version
feature:iot: Update iot client to latest version
feature:rds: Update rds client to latest version
feature:EC2: Add NetworkAclExists waiter (#1019 __)
feature:EC2: Add NetworkAclExists waiter (#1019)
feature:Paginator: Add paginators for Application Auto Scaling service (#1029)
feature:Config: Add max_pool_connections to client config (#773, #766, #1026)
feature:ec2: Update ec2 client to latest version
feature:servicecatalog: Update servicecatalog client to latest version
feature:support: Update support client to latest version
feature:support: Update support client to latest version
feature:cloudfront: Update cloudfront client to latest version
feature:sns: Update sns client to latest version
feature:codepipeline: Update codepipeline client to latest version
feature:codepipeline: Update codepipeline client to latest version
feature:ec2: Update ec2 client to latest version
feature:rds: Update rds client to latest version
feature:sns: Update sns client to latest version
feature:ecr: Update ecr client to latest version
feature:rds: Update rds client to latest version
feature:rds: Update rds client to latest version
feature:ResponseMetadata: Add MaxAttemptsReached and RetryAttempts keys to the returned ResonseMetadata dictionary (#1024, #965, #926)
feature:application-autoscaling: Update application-autoscaling client to latest version
feature:cognito-idp: Update cognito-idp client to latest version
feature:Waiters: Add last_response attribute to WaiterError (#1023, #957)
feature:config: Update config client to latest version
feature:gamelift: Update gamelift client to latest version
feature:autoscaling: Update autoscaling client to latest version
feature:autoscaling: Update autoscaling client to latest version
feature:codepipeline: Update codepipeline client to latest version
feature:ssm: Update ssm client to latest version
feature:cloudfront: Update cloudfront client to latest version
feature:route53: Update route53 client to latest version
feature:rds: Update rds client to latest version
feature:rds: Update rds client to latest version
feature:opsworks: Update opsworks client to latest version
feature:ec2: Update ec2 client to latest version
feature:ec2: Update ec2 client to latest version
feature:iam: Update iam client to latest version
feature:workspaces: Update workspaces client to latest version
feature:elbv2: Update elbv2 client to latest version
feature:elbv2: Update elbv2 client to latest version
feature:apigateway: Update apigateway client to latest version
feature:ecs: Update ecs client to latest version
feature:acm: Update acm client to latest version
feature:kms: Update kms client to latest version
Nothing published for this version
feature:kms: Update kms client to latest version
feature:kms: Update kms client to latest version
feature:kinesisanalytics: Update kinesisanalytics client to latest version
feature:autoscaling: Update autoscaling client to latest version
feature:elb: Update elb client to latest version
feature:ecs: Update ecs client to latest version
feature:s3: Add support for s3 dualstack configuration
feature:snowball: Update snowball client to latest version
feature:elbv2: Update elbv2 client to latest version
feature:marketplacecommerceanalytics: Update marketplacecommerceanalytics client to latest version
feature:marketplacecommerceanalytics: Update marketplacecommerceanalytics client to latest version
feature:ecr: Update ecr client to latest version
feature:cloudfront: Update cloudfront client to latest version
feature:lambda: Update lambda client to latest version
feature:lambda: Update lambda client to latest version
feature:gamelift: Update gamelift client to latest version
feature:rds: Update rds client to latest version
bugfix:Serialization: Account for boolean in query string serialization
bugfix:Serialization: Account for boolean in query string serialization
feature:rds: Update rds client to latest version
feature:iot: Update iot client to latest version
feature:ds: Update ds client to latest version
feature:meteringmarketplace: Update meteringmarketplace client to latest version
feature:route53domains: Update route53domains client to latest version
feature:application-autoscaling: Update application-autoscaling client to latest version
feature:emr: Update emr client to latest version
feature:cloudwatch: Update cloudwatch client to latest version
feature:logs: Update logs client to latest version
feature:machinelearning: Update machinelearning client to latest version
feature:ds: Update ds client to latest version
feature:ds: Update ds client to latest version
feature:ses: Update ses client to latest version
bugfix:s3: S3 region redirector will now honor the orginial url scheme.
feature:sts: Update sts client to latest version
feature:cognito-idp: Update cognito-idp client to latest version
feature:ec2: Update ec2 client to latest version
feature:es: Update es client to latest version
feature:apigateway: Update apigateway client to latest version
bugfix:Credentials: Raise error when partial hard coded creds are provided when creating a client.
feature:s3: Update s3 client to latest version
feature:s3: Update s3 client to latest version
feature:codedeploy: Add a waiter to wait on successful deployments.
feature:iot: Update iot client to latest version
feature:acm: Update acm client to latest version
feature:acm: Update acm client to latest version
feature:elastictranscoder: Update elastictranscoder client to latest version
feature:cloudformation: Update cloudformation client to latest version
feature:config: Update config client to latest version
feature:application-autoscaling: Update application-autoscaling client to latest version
feature:ssm: Update ssm client to latest version
feature:ssm: Update ssm client to latest version
feature:devicefarm: Update devicefarm client to latest version
feature:dms: Update dms client to latest version
feature:dms: Update dms client to latest version
feature:ecs: Update ecs client to latest version
Feature:Credential Provider: Add support for ECS metadata credential provider.
feature:rds: Update rds client to latest version
feature:servicecatalog: Update servicecatalog client to latest version
feature:servicecatalog: Update servicecatalog client to latest version
feature:opsworks: Update opsworks client to latest version
feature:ds: Update ds client to latest version
feature:config: Update config client to latest version
feature:iam: Update iam client to latest version
feature:iam: Update iam client to latest version
feature:codepipeline: Update codepipeline client to latest version
feature:efs: Update efs client to latest version
feature:dms: Update dms client to latest version
feature:dms: Update dms client to latest version
feature:ssm: Update ssm client to latest version
feature:sns: Update sns client to latest version
feature:sns: Update sns client to latest version
feature:route53: Update route53 client to latest version
feature:ec2: Update ec2 client to latest version
feature:gamelift: Update gamelift client to latest version
feature:efs: Update efs client to latest version
feature:iot: Update iot client to latest version
bugfix:S3: Fixed a bug where the S3 region redirector was potentially causing a memory leak on python 2.6.
bugfix:S3: Fixed a bug where the S3 region redirector was potentially causing a memory leak on python 2.6.
feature:s3: Update s3 client to latest version
bugfix:RequestSigner: RequestSigner.generate_presigned_url now requires the operation name to be passed in. This does not affect using generate_presig
bugfix:RequestSigner: RequestSigner.generate_presigned_url now requires the operation name to be passed in. This does not affect using generate_presigned_url through a client.
feature:rds: Update rds client to latest version
feature:directconnect: Update directconnect client to latest version
feature:RequestSigner: Allow botocore.UNSIGNED to be used with generate_presigned_url and generate_presigned_post.
feature:ec2: Update ec2 client to latest version
feature:cognito-identity: Update cognito-identity client to latest version
feature:iam: Update iam client to latest version
bugfix:AssumeRole: Fix regression introduced in #920 __ where assume role responses error out when attempting to cache a response. (#961 __)
feature:ResponseMetadata: Add http response headers to the response metadata.
feature:ResponseMetadata: Add http response headers to the response metadata.
feature:codepipeline: Update codepipeline client to latest version
feature:s3: Automatically redirect S3 sigv4 requests sent to the wrong region.
feature:opsworks: Update opsworks client to latest version
feature:s3: Use MD5 to sign S3 bodies by default.
bugfix:EC2: Replace chars in the EC2 console output we can't decode with replacement chars. We were previously returning either the decoded content or the original base64 encoded content. We now will consistently return decoded output, any any chars we can't decode are substituted with a replacement char. (#953)
feature:cloudtrail: Update cloudtrail client to latest version
feature:cloudtrail: Update cloudtrail client to latest version
feature:acm: Update acm client to latest version
bugfix:Stubber: Fix regression in comparing multiple expected parameters
feature:rds: Update rds client to latest version
feature:ses: Update ses client to latest version
feature:Stubber: Allow certain paramters to be ignored by specifying stub.ANY. Resolves #931 __
feature:Stubber: Allow certain paramters to be ignored by specifying stub.ANY. Resolves #931
feature:s3: Update s3 client to latest version
feature:Config: Add parameter_validation option in config file to disable parameter validation when making API calls (#905 __)
feature:Config: Add parameter_validation option in config file to disable parameter validation when making API calls (#905)
feature:dynamodbstreams: Update dynamodbstreams client to latest version
bugfix:s3: Make the stubber work with get_bucket_location
feature:iot: Update iot client to latest version
feature:machinelearning: Update machinelearning client to latest version
feature:Stubber: Allow adding additional keys to the service error response.
feature:Stubber: Allow adding additional keys to the service error response.
feature:ec2: Update ec2 client to latest version
feature:application-autoscaling: Update application-autoscaling client to latest version
feature:elasticache: Update elasticache client to latest version
feature:elasticache: Update elasticache client to latest version
feature:rds: Update rds client to latest version
feature:rds: Update rds client to latest version
feature:ec2: Update ec2 client to latest version
feature:firehose: Update firehose client to latest version
feature:firehose: Update firehose client to latest version
feature:ec2: Update ec2 client to latest version
feature:ecs: Update ecs client to latest version
feature:application-autoscaling: Adds support for Application Auto Scaling. Application Auto Scaling is a general purpose Auto Scaling service for sup
feature:application-autoscaling: Adds support for Application Auto Scaling. Application Auto Scaling is a general purpose Auto Scaling service for supported elastic AWS resources. With Application Auto Scaling, you can automatically scale your AWS resources, with an experience similar to that of Auto Scaling.
feature:endpoints: Updated endpoints.json to latest.
feature:dynamodb: Update dynamodb client to latest version
feature:dynamodb: Update dynamodb client to latest version
bugfix:Waiters: Fix JMESPathTypeError exception being raised (#906, #907)
feature:workspaces: Update workspaces client to latest version
feature:s3: Add paginator for ListObjectsV2
feature:discovery: Update discovery client to latest version
feature:iam: Add missing paginators. Fixes #919.
feature:ec2: Update ec2 client to latest version
feature:ec2: Update ec2 client to latest version
feature:ssm: Update ssm client to latest version
feature:discovery: Update discovery client to latest version
feature:cloudformation: Update cloudformation client to latest version
feature:storagegateway: Update storagegateway client to latest version
feature:storagegateway: Update storagegateway client to latest version
feature:directconnect: Update directconnect client to latest version
feature:emr: Update emr client to latest version
feature:sqs: Update sqs client to latest version
feature:iam: Update iam client to latest version
feature:kms: Update kms client to latest version
feature:kms: Update kms client to latest version
feature:sts: Update sts client to latest version
feature:apigateway: Update apigateway client to latest version
feature:ecs: Update ecs client to latest version
feature:s3: Update s3 client to latest version
feature:cloudtrail: Update cloudtrail client to latest version
feature:inspector: Update inspector client to latest version
feature:inspector: Update inspector client to latest version
feature:codepipeline: Update codepipeline client to latest version
feature:opsworks: Add InstanceRegistered waiter
feature:elasticbeanstalk: Update elasticbeanstalk client to latest version
feature:route53domains: Update route53domains client to latest version
feature:route53domains: Update route53domains client to latest version
feature:opsworks: Update opsworks client to latest version
feature:ecr: Update ecr client to latest version
feature:ecr: Update ecr client to latest version
bugfix:aws kinesis: Fix issue where "EnhancedMonitoring" was not displayed when running aws kinesis describe-stream (#1929)
feature:acm: Update acm client to latest version
feature:ec2: Update ec2 client to latest version
feature:sts: Update sts client to latest version
bugfix:Serializer: In the rest xml parser, we were converting the input we recieve into a str, which was causing failures on python 2 when multibyte unicode strings were passed in. The fix is to simply use six.text_type, which is unicode on 2 and str on 3. The string will be encoded into the default encoding later on in the serializer. Fixes #868
feature:cognito-idp: Update cognito-idp client to latest version
feature:EMR: Add support for smart targeted resize feature
feature:EMR: Add support for smart targeted resize feature
feature:IOT: Add SQL RulesEngine version support
feature:ACM: Add tagging support for ACM
bugfix:Credentials: Include timezone information when storing refresh time (#869 __)
bugfix:Credentials: Include timezone information when storing refresh time (#869)
feature:EC2: Add support for two new EBS volume types
feature:S3: Add support for s3 accelerate configuration
feature:CognitoIdentityProvider: Add support for new service, CognitoIdedentityProvider
feature:S3: Add support for Amazon S3 Transfer Acceleration
feature:CodeCommit: Add paginators for CodeCommit (#881)
feature:Kinesis: Update Kinesis client to latest version
feature:ElasticBeanstalk: Add support for automatic platform version upgrades with managed updates
feature:DeviceFarm: Update DeviceFarm client to latest version
feature:FireHose: Update FireHose client to latest version
feature:IoT: Add methods for managing CA certificates.
feature:IoT: Add methods for managing CA certificates.
bugfix:EC2: Fix issues with checking an incorrect error code in waiters.
bugfix:Accept Header: Fix issue in overriding Accept header for API Gateway.
feature:DS: Added support for Directory Service Conditional Forwarder APIs.
feature:DS: Added support for Directory Service Conditional Forwarder APIs.
feature:Elasticbeanstalk: Adds support for three additional elements in AWS Elasticbeanstalk's DescribeInstancesHealthResponse: Deployment, AvailabilityZone, and InstanceType. Additionally adds support for increased EnvironmentName length from 23 to 40.
bugfix:Paginator: Allow non-specified input tokens in old starting token format.
feature:Route53: Added support for metric-based health checks and regional health checks.
feature:Route53: Added support for metric-based health checks and regional health checks.
feature:STS: Added support for GetCallerIdentity, which returns details about the credentials used to make the API call. The details include name and account, as well as the type of entity making the call, such as an IAM user vs. federated user.
feature:S3: Added support for VersionId in PutObjectAcl (issue 856)
bugfix:S3: Add validation to enforce S3 metadata only contains ASCII. (issue 861)
bugfix:Exceptions: Consistently parse errors with no body (issue 859)
bugfix:Config: Handle case where S3 config key is not a dict (issue 858)
bugfix:Examples: Account for empty input shape in examples (issue 855)
feature:CloudFormation: Update client to latest version
feature:CloudFormation: Update client to latest version
feature:CodeDeploy: Update client to latest version
feature:DMS: Update client to latest version
feature:ElastiCache: Update client to latest version
feature:Elastic Beanstalk: Update client to latest version
feature:Redshift: Update client to latest version
feature:WAF: Update client to latest version
bugfix:Pagintor: Fix regression when providing a starting token for a paginator (issue 849)
bugfix:Response Parsing: Handle case when generic HTML error response is received (issue 850)
bugfix:Request serialization: Handle case when non str values are provided for header values when using signature version 4 (issue 852)
bugfix:Retry: Retry HTTP responses with status code 502 (issue 853)
feature:RDS: Update client to latest version
feature:RDS: Update client to latest version
feature:StorageGateway: Update client to latest version
bugfix:Proxy: Handle case where error response from proxy is received (`issue 850 <https://github.com/boto/botocore/pull/850`__)
Your coding agent can read these notes before it upgrades. Set up the MCP server →