Botocore is the core library for Boto, providing the low-level building blocks needed to work with Amazon Web Services (AWS) APIs. It’s useful for developers who want the underlying service clients, request/response handling, and authentication that higher-level AWS tooling builds on.
Project status
- Actively maintained: Yes, the repository shows very recent activity (last upstream push on 2026-09-02) and frequent botocore version bumps with ongoing service model and metadata updates through 2026-09-01.
- Apparent update cadence: Approximately daily to near-daily in late August and early September 2026 (for example, 1.43.86 on 2026-09-01, then 1.43.85 and 1.43.84 on 2026-08-31).
AI summary generated
Recent updates
1.43.89
Version 1.43.89 primarily updates the embedded Botocore service models (API definitions) and documentation to add support for new AWS features across Bedrock, EC2, MediaTailor, and Service Quotas. The code changes are almost entirely additive (new enum values, new API operation, new request/response shapes), with no obvious removals or signature-breaking changes in the library surface shown in this diff.
Features1.43.88
Release 1.43.88 primarily updates the Botocore service models with new API operations and expanded request/response shapes across multiple AWS services (bedrock-agentcore, connect, ecs, eks, elbv2, evs, guardduty, socialmessaging, transfer, etc.). The release notes section in the provided input is empty, so most of these changes are not explicitly documented there.
Features1.43.87
Version 1.43.87 primarily contains AWS API model updates across multiple services, adding new operations and options such as forced application deletion, new Bedrock log group limits, EC2 interruptible capacity retention controls, and SageMaker Feature Store Standard_V2 plus UpdateRecord. It also introduces new waiters and exception mappings in the botocore service models to support the new APIs and behaviors.
BreakingFeatures1.43.86
Release 1.43.86 updates botocore to new service model definitions and endpoint metadata, adding multiple API capabilities across AWS services. While the changelog includes a set of documented API changes, the release notes section itself was not provided by the publisher.
Features1.43.85
No publisher release notes were provided for version 1.43.85. The code diff indicates this release only updates package metadata and extends the botocore agent-registry service-2 data model with new descriptor shapes for HTTP and AG-UI endpoints.
Features1.43.84
Release 1.43.84 updates the botocore model and client metadata (version bump from 1.43.83) and adds multiple AWS service API capabilities. No publisher release notes were provided in the release_notes input, so all surfaced API/model changes are effectively undocumented from that source.
1.43.83
Release 1.43.83 is primarily an API surface expansion for multiple AWS services, adding new operations and request/response shapes (notably Bedrock Agent, Bedrock AgentCore, Cognito IDP, ECS, and HealthLake) and updating the botocore service models and documentation versioning. The only potentially behavior-impacting change spotted in the diff is a validation constraint change in partnercentral-selling that can break existing inputs, even though it is not mentioned in the changelog/release notes.
Features1.43.82
Version 1.43.82 updates the botocore service models for multiple AWS services (CodeDeploy, Cognito, DataZone, EC2, Lambda microvms, Logs, OpenSearch, and RDS) primarily by adding new API operations, request parameters, and response fields. The publisher release notes are missing, so the comparison is based on what is present in the repo changelog and what the service models actually changed.
BreakingFeatures1.43.81
No publisher release notes were provided for version 1.43.81. The repository changelog and botocore service models show several AWS API model updates, primarily additive (new fields/enums and expanded instance type allowances). A notable exception is a change to DevOps Agent model validation for ChatExecutionId.
Features1.43.80
botocore 1.43.80 mainly updates service models to add new API capabilities and configuration options, including Auto Scaling distribution segments, AWS DevOps Agent approval updates, EC2 fleet reserved capacity resource group targeting, and EKS terminated pod garbage collection tuning. The release also introduces new IAM Toolbox (preview) operations, expands EVS instance type support, and updates some SDK/service documentation (notably IoT and Marketplace metering guidance).
Features1.43.79
Version 1.43.79 is primarily an API model update release, adding new request/response shapes and documentation metadata across several AWS services (Bedrock, Connect, Kafka, Elemental Inference, Launch Wizard, Security Agent, Timestream InfluxDB, and Batch). The code diff shows mostly additive changes to botocore service models, with a few validation-pattern/documentation adjustments. No external release notes were provided by the publisher in the input.
Features1.43.78
Release 1.43.78 contains a large set of botocore model and endpoint-rule updates across multiple AWS services, plus a botocore version bump. No publisher release notes were provided, so the practical impact is best inferred from the code diff, which includes endpoint resolution behavior changes and updates to allowed request values that can affect client-side validation.
Breaking1.43.77
No publisher release notes were provided for version 1.43.77. The code change set is small and focuses on a HTTP connection reuse behavior, specifically around how response parsing state is managed when using Expect: 100-continue.
1.43.76
botocore version 1.43.76 was released with updated service model definitions across multiple AWS services. Most changes are additive (new shapes, new operations, expanded enums/max constraints), but there are also model-level behavior-affecting tweaks such as marking fields as sensitive and correcting documented default values.
Features1.43.75
Release 1.43.75 primarily updates the botocore service models (API shapes) for multiple AWS services, adding new fields, operations, and waiters/paginators. The publisher provided no release notes, but the repo changelog and .changes entry enumerate several API changes across account-access, batch, bedrock-agentcore, bedrock-agentcore-control, eks, medialive, redshift, redshift-serverless, and vpc-lattice.
Features1.43.74
No publisher release notes were provided for version 1.43.74. The code changes instead reflect botocore model updates and documentation/spec updates across multiple services (Marketplace Catalog, Outposts, MediaLive, WorkSpaces, EC2, Batch, and EntityResolution). One modeled behavior change appears potentially breaking for EntityResolution delete operations when the target resource does not exist.
1.43.73
This release primarily updates Botocore service models by adding new APIs and request/response shapes across multiple AWS services, plus some model/doc updates. There were no publisher release notes provided, so the changes below are inferred from the actual code/model diffs.
Breaking1.43.72
Release 1.43.72 is a version-only bump (botocore/__init__.py) accompanied by a large set of botocore service model updates. The changes are mostly additive API model updates across Bedrock, Glue, MWAA Serverless, Observability, Redshift, and SageMaker, plus endpoint metadata updates.
1.43.71
Release 1.43.71 updates the botocore service models for multiple AWS services and introduces several new API operations and request/response shapes. It also bumps the internal version metadata and updates the pre-commit tooling (ruff).
Features1.43.70
Release 1.43.70 bumps the botocore version (1.43.69 to 1.43.70) and updates multiple AWS service models. Most changes are additive API model updates across IAM, MediaConnect, ODB, QuickSight, and Well-Architected, plus at least one client-side validation change for a DSQL Kinesis ARN parameter.
BreakingFeatures