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: The botocore source is receiving frequent, recent updates (e.g., multiple 1.43.x updates from 2026-05-13 to 2026-05-27), consistent with ongoing maintenance of the core boto3 and AWS CLI SDK layer.
- Update cadence: At least one update every few days in the last two weeks (1.43.7 on 2026-05-13, then 1.43.8 through 1.43.16 by 2026-05-27), indicating a steady cadence rather than long gaps.
AI summary generated 6 days ago
Recent updates
1.43.20
TodayNo release notes were provided in the <release_notes> section for version 1.43.20. However, the repository itself includes changelog-style entries and a large botocore model update set, indicating multiple API additions and documentation changes across AWS services.
1.43.19
YesterdayRelease 1.43.19 primarily updates the botocore service models for Cognito IDP, AWS Marketplace Agreement, and Amazon QuickSight. The diff shows large, mostly additive changes that introduce new API operations and new request/response shapes, alongside a botocore version bump.
Features1.43.18
4 days agoVersion 1.43.18 updates multiple AWS service models in botocore, adding new API capabilities across Bedrock (automated reasoning workflows, secret-reference credential configuration), Ground Station (Alpha-5 TLE support), Omics (engineSettings and Nextflow profiles), QuickSight (OAuthClientApplication support), RDS Data (null elements in ExecuteStatement arrays), Route53 Resolver (batch firewall rule operations), and SESV2 (tenant suppression lists). It also documents an opt-in retry behavior change via the AWS_NEW_RETRIES_2026 environment variable.
Features1.43.17
5 days agobotocore 1.43.17 updates service model definitions across many AWS APIs (26 files, net +7852 lines). The GitHub release notes content is missing in the provided input, so the assessment below relies entirely on what the code diff actually changed in the SDK model. Notable areas include AppStream WorkSpaces Applications BYOL, Bedrock AgentCore Harness configuration, and contract/validation changes such as S3 StorageLens minimum values and botocore sensitivity masking behavior.
1.43.16
6 days agoThis release (1.43.16) has no publisher-provided release notes. The code diff shows multiple AWS service model updates in botocore, adding new API capabilities primarily related to smart subtitles/captions, Bedrock Data Automation fallbacks, and ECS Neuron device resource support.
1.43.15
1 week agoNo publisher release notes were provided for version 1.43.15. The code diff indicates this release is primarily a botocore model update that adds new API operations and new response fields, with no obvious removals or breaking signature changes visible in the provided diff.
Features1.43.14
1 week agoRelease 1.43.14 has no publisher release notes provided, but the repository changelog documents multiple service model additions (DataZone VPC connections, EC2 EnclaveOptions in ModifyInstanceAttribute, Invoicing idempotency via ClientToken, Pi performance analysis recommendations, Q Connect guardrail results, SecurityAgent verification scripts) and an S3 endpoint caching improvement. The code diff also includes additional EC2 request shape and endpoint-table changes that are not called out in the changelog.
Features1.43.13
1 week agoRelease 1.43.13 is a botocore model update that bumps botocore version to 1.43.13 and adds multiple new service API operations across several AWS services. The provided release notes contain no publisher notes, so the changelog content shown in the repo and the service model diffs represent the only evidence of what changed.
Features1.43.12
1 week agobotocore 1.43.12 updates multiple AWS service models and endpoint metadata. The bundled changelog focuses on new API capabilities (Bedrock request metadata, Customer Profiles retraining controls and schema additions, KMS grant support for service principals), but the code diff also shows additional endpoint and model documentation changes beyond what is explicitly called out.
Features1.43.11
2 weeks agoNo publisher release notes were provided for version 1.43.11. The repo changelog (and .changes/1.43.11.json) documents several API model updates across Bedrock Agent Core, DevOps Agent, Amazon Managed Grafana, GuardDuty, RTBFabric, and SageMaker.
Features1.43.10
2 weeks agobotocore 1.43.10 introduces several new API model updates across multiple AWS services, reflected in the changelog (accessanalyzer, connect, ec2, ecs, evs, ivs, quicksight). The publisher release notes were not provided, so the only documented changes are the entries in CHANGELOG.rst and .changes/1.43.10.json.
Features1.43.9
2 weeks agobotocore 1.43.9 updates bundled AWS service models and metadata. The documented changes focus on CloudWatch Logs query limits, MediaPackageV2 DASH MPD availabilityStartTime configuration support, and PartnerCentral Selling fields to improve TCV to MRR based opportunity deal sizing.
Features1.43.8
2 weeks agoThis release is primarily an AWS service model expansion release. The largest additions are Bedrock Advanced Prompt Optimization job lifecycle APIs, CloudFront mTLS trust store enhancements, and a new Amazon DataZone notebook API surface for SageMaker Unified Studio, with smaller API updates in DMS, Glue, Grafana, MGN, and QConnect.
Features1.43.7
2 weeks agoRelease 1.43.7 is a broad AWS SDK refresh with many generated service model updates, including new Region switch support for Lambda event source mappings, Aurora DSQL CDC streams, Lightsail CDN origin IP types, and new Redshift node types. It also updates Step Functions GovCloud endpoint resolution, changes the default Glue job timeout for version 5.0+, and expands CI testing to Python 3.14t.
Features1.43.6
3 weeks agoThis release is a mostly additive AWS service-model update. It expands AgentCore with new payment-related APIs, adds EC2 instance type visibility controls, extends bcm-data-exports output types, and includes smaller API and documentation updates across several services.
Features1.43.5
3 weeks agoThis release is mostly an AWS service model refresh, adding new API surface across Bedrock AgentCore, Glue, Lex V2, MWAA, SageMaker, and Security Hub. It also bumps botocore to 1.43.5 and updates the endpoint-rules client, while tightening a few validations and modeled error responses.
BreakingFeatures1.43.4
4 weeks agoThis release is a broad AWS service model refresh, centered on new Marketplace Agreement and MediaTailor APIs, Medical Imaging DICOM JSON metadata import support, CloudFront tagging, and updated limits for Clean Rooms ML. The code diff is mostly generated service model data, with no runtime Python logic changes beyond the package version bump.
Features1.43.3
4 weeks agoBotocore 1.43.3 is mostly an AWS model refresh, adding MCP gateway session and streaming support, EC2 VPN tunnel bandwidth control, new Geo Routes notice codes, Logs delivery source configuration, and VPC Lattice privately resolvable DNS resources. The diff also includes a retry-default bootstrap change in `configprovider.py` and a few validation updates that are not called out in the release notes.
Features1.43.2
1 month agoBotocore 1.43.2 is a mostly additive service-model release, with new API surface for AppStream, CloudWatch, Entity Resolution, IAM, IoT, Logs, QConnect, and QuickSight, plus a new mx-central-1 endpoint. Most changes are documentation and schema updates, but CloudWatch also changes dashboard deletion behavior in a way that can affect existing clients.
Features1.43.1
1 month agoRelease 1.43.1 is a broad AWS service-model update across Bedrock AgentCore, DataZone, EKS, Kafka, Observability Admin, Payment Cryptography, Route 53 Global Resolver, SageMaker, and SSO Admin. The headline changes are OAuth2 token-exchange support and long-term memory metadata in AgentCore, new asynchronous notebook run APIs in DataZone, and several service-specific API expansions.
Features