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: Evidence shows very recent upstream activity (last push on 2026-09-16) and a steady stream of botocore package updates (versions 1.43.86 through 1.43.95 shown).
- Apparent update cadence: Updates appear roughly every 1 to 3 days across early to mid September 2026 (for example, 1.43.94 on 09-14, 1.43.95 on 09-15, and 1.43.93 on 09-11).
AI summary generated
Recent updates
1.43.97
Version 1.43.97 updates botocore service models across multiple AWS services, adding new API shapes, parameters, and operations. The only concrete non-model behavioral change in the diff is in checksum handling, plus a change to Connect input validation for ReplicaInstance.
Features1.43.96
No publisher release notes were provided for version 1.43.96, but the botocore model and documentation artifacts were updated. The code diff shows additive changes across multiple AWS service models, including new API operations, new request/response shapes, expanded enum states, and pagination model updates.
1.43.95
No publisher release notes were provided for version 1.43.95. The code changes in this release are primarily botocore service model updates, adding new API shapes/fields and new Direct Connect operations, plus a botocore version bump.
1.43.94
Version 1.43.94 primarily expands AWS API models across several services (Billing, Billing Conductor, CodeDeploy, Glue, Image Builder, STS) by adding new fields, new operations, and updated API constraints. In addition, the code diff shows extra model and endpoint table updates that are not mentioned in the documented release notes, including endpoint additions for new regions and changes to pagination token shapes.
Features1.43.93
Version 1.43.93 introduces multiple documented API model updates (AWS Batch bulk job operations, ECS Express Gateway cpuArchitecture support, e-invoicing portal listing APIs, Lightsail private origin access and distribution options, and MediaConvert Dolby Vision metadata enhancements). It also changes botocore timestamp serialization to preserve fractional Unix timestamps instead of truncating to whole seconds. The provided publisher release notes were empty, so most of this can only be validated against the repo changelog and code diff.
BreakingFeatures1.43.92
This release updates the AWS Botocore service models to add several new API operations, new request parameters, and additional resource fields across multiple services. The provided publisher release notes are empty, so the repository changelog is not backed by the supplied release_notes content. The code diff shows new Bedrock, EC2, Outposts, Resilience Hub v2, RTB Fabric, and SageMaker capabilities, plus at least one notable change that could affect request validation or developer expectations.
Features1.43.91
Version 1.43.91 of this botocore-based package adds a set of new API model elements across multiple AWS services, primarily additive changes such as new operations, new request/response fields, and updated schema documentation. The biggest functional expansions covered are Connect AI evaluation form version listing, EC2 cross-account EBS copy encryption controls, Elemental Inference contextual metadata and feed policy APIs, MediaLive caption manual positioning, MediaPackage v2 Dynamic Multiview configuration, MediaTailor AWS_SERVICE_REQUEST function type, and PCS custom gres.conf support plus Slurm 26.05.
Features1.43.90
Release 1.43.90 bumps botocore version (1.43.89 to 1.43.90) and updates multiple AWS service model definitions. The change set is largely additive, introducing new API parameters and new request/response shapes across AppFlow, Connect, EC2, MGN, Omics, Pinpoint SMS Voice v2, S3, S3Control, and SageMaker, plus a tooling update to the ruff pre-commit hook.
Features1.43.89
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.
Breaking