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 upstream was pushed on 2026-11-04, and recent updates continue through 2026-10-30.
- Recent updates arrive frequently, often on consecutive weekdays, with broad AWS service-model and endpoint changes.
AI summary generated
Recent updates
1.43.126
No publisher release notes were provided. The code diff adds API and model support across Athena, Auto Scaling, Bedrock, Connect, DataZone, Glue, MediaConvert, RAM, and Systems Manager, along with endpoint metadata updates and sensitive-field annotations.
SecurityFeatures1.43.125
Botocore 1.43.125 updates service models for 16 AWS services, adding APIs and fields for account access, identity federation, job upgrades, and other service capabilities. The publisher provided no release notes, but the diff includes an in-repository changelog describing the main changes; the supplied diff is truncated, so changes in the omitted files cannot be independently checked.
Features1.43.124
The publisher provided no release notes. The diff adds API model support across numerous AWS services, including DynamoDB bulk operations, S3 Tables migrations, Polly lexicon tagging, and new response fields; it also marks all Lookout for Equipment APIs deprecated following the service's end of support.
Features1.43.123
The publisher supplied no release notes, but the diff adds an in-repository changelog listing API model updates for ten AWS services. The changes are primarily additive; no incompatible breaking change is apparent, though the diff also contains undocumented response-model changes, a regional endpoint addition, and Timestream for InfluxDB deprecations.
Features1.43.122
Version 1.43.122 adds AWS service-model support across Bedrock AgentCore, Clean Rooms, Image Builder, Lightsail, and WAFv2, and fixes S3 presigned POST condition-list mutation. It also updates the optional awscrt dependency from 0.36.0 to 0.38.0. The publisher supplied no release-note text, though the diff adds a repository changelog and change fragment describing these updates.
Features1.43.121
The publisher provided no release notes. The repository changelog records API updates across 12 AWS services, including new capabilities for ACM, Connect, EC2, Neptune, and OpenSearch; the code diff also contains several model changes that are more specific than the changelog describes.
BreakingFeatures1.43.120
The publisher provided no release notes, but the repository changelog lists six API updates across Bedrock AgentCore Control, EC2, ECS, Inspector2, License Manager, and Lightsail. The diff adds new APIs and request/response fields, including on-demand AMI scanning and GPU sharing, with no apparent breaking changes to existing signatures.
Features1.43.119
The publisher supplied no release notes, but the repository diff adds broad AWS service-model updates, including new operations and resource shapes across Billing, ECR, IVS, MediaConnect, and other services. The changes appear predominantly additive, with no confirmed breaking API changes or dependency updates.
Features1.43.118
The publisher supplied no release notes, but the repository changelog lists API model updates across 13 AWS services, including new operations and capabilities. The diff also includes a TLS trust-store change and several API documentation and endpoint metadata updates that are not listed in the 1.43.118 changelog entry.
SecurityFeatures1.43.117
botocore 1.43.117 updates service models and endpoints for multiple AWS services, adding several API capabilities and response fields. It also removes the deprecated finspace, finspace-data, and tnb clients/endpoints, and updates HealthLake's UpdateProfileWithAgent to use streaming output. No publisher release notes were provided for this version, so the effective documentation appears to rely on the in-repo CHANGELOG entries.
BreakingSecurityFeatures1.43.116
Version 1.43.116 updates botocore service models to introduce several new API capabilities across multiple AWS services, mostly as additive schema changes (new shapes, fields, and operations). The bundled changelog entries enumerate the major user-facing API updates, and the code diff aligns with those items overall.
Features1.43.115
Release 1.43.115 primarily updates many AWS service models, adding new API operations and parameters (notably Amazon Bedrock retrieval instructions, CloudWatch alarm tag propagation, and Amazon Connect GetAttachedFile content disposition). In addition to model changes, it also includes botocore runtime changes related to request signing header handling and credential refresh state management. The publisher release notes section is empty in the provided data, so several runtime behavior changes appear to be undocumented there.
Features1.43.114
No publisher release notes were provided for version 1.43.114. The code diff for this release updates Botocore service models and documentation generation, adding new API fields and enumerations across multiple AWS services, plus updating endpoint rule data used for service endpoint resolution.
1.43.113
No publisher release notes were provided for version 1.43.113. The code diff shows primarily additive botocore model updates (new operations, new shapes, documentation updates) across many AWS services, with a small amount of client behavior/validation tightening. The most notable potential breaking change is a new required-field validation in the Amazon HealthOmics model.
1.43.112
Release 1.43.112 updates botocore to introduce a number of new or expanded service API models across multiple AWS services, including Bedrock AgentCore memory TTL support, new AWS Glue Data Quality V2 operations, and the Lambda Web Functions feature set (new operations, paginators, and waiters). The publisher release notes were not provided, so the contents of CHANGELOG.rst and the service model diffs are the primary sources of what actually changed.
Features1.43.111
Release 1.43.111 adds multiple API surface expansions across several AWS service models in botocore, including a new Deadline Cloud ListMemberships operation, MediaTailor HTTP response caching configuration, and new/expanded QuickSight custom permissions capability states. The publisher release notes were not provided, so the changes seen in the diff are not confirmed as being documented in release messaging for this version.
Features1.43.110
Version 1.43.110 updates botocore service models for a number of AWS APIs, including new Cost Explorer and Budgets filtering dimensions, new CloudFormation rollback capabilities, and new protocol support using Smithy RPC v2 CBOR. It also adds several new API operations and request parameters (for example, Glue system logs and EMR Serverless access to system profile logs).
BreakingFeatures1.43.109
Release 1.43.109 bumps the botocore version to 1.43.109 and updates documentation version strings. The primary change is a major update to the Lambda Web (lambda-web) service model, removing operations that are not generally available and also removing associated pagination and waiter configurations.
Features1.43.108
Release 1.43.108 updates the botocore service models for multiple AWS APIs (Cognito IDP, Glue, Invoicing, Lambda Web, MediaPackage V2, Pinpoint SMS Voice V2, and Security Agent), plus version bumps in package and docs config. The changes are primarily schema/model additions (new fields, enum values, and configuration structures), with no lockfile or obvious behavioral changes in client code.
1.43.107
Release 1.43.107 has no publisher release notes provided. The code diff shows a botocore version bump to 1.43.107 and primarily adds new API models, shapes, and service operations across multiple AWS services.