Strands Agents Changelog

Harness Python v1.47.0

Fri, 10 Jul 2026 00:00:00 GMT

• validate the AWS region before building the Nova Sonic endpoint URL • add changelog generator and sync workflow • remove duplicate client creation in Nova Sonic start() • fix typo and inconsistent error messages across model providers • declarative rebuild for _fix_broken_tool_use

Harness TypeScript v1.9.0

Fri, 10 Jul 2026 00:00:00 GMT

• expose metrics getter on LocalAgent • add changelog generator and sync workflow • fixed typescript release-workflow not running integ tests • map labels to native issue type and language field • harden npm lifecycle scripts for best practices

Harness TypeScript v1.8.0

Wed, 08 Jul 2026 00:00:00 GMT

• result handling, model-state isolation, and system-prompt fidelity • add local memory store • add Strandslator design doc • improve agent guidance • change-based selective integration testing

Harness Python v1.46.0

Tue, 07 Jul 2026 00:00:00 GMT

• update litellm requirement from <=1.89.3,>=1.75.9 to >=1.75.9,<=1.89.4 in /strands-py • revert pinning virtualenv now that hatch 1.16.5 is out • telemetry for memory manager • raise specific error for interrupt responses without active interrupt state • result handling, model-state isolation, and system-prompt fidelity

Harness Python v1.45.0

Thu, 25 Jun 2026 00:00:00 GMT

• type the Bedrock KB store's S3 client via boto3-stubs • add memory manager docs • bound tool schema normalization recursion depth • add sandbox docs • require 2 maintainer reviews on bot/agent PRs

Harness TypeScript v1.7.0

Thu, 25 Jun 2026 00:00:00 GMT

• add memory manager docs • require 2 maintainer reviews on bot/agent PRs • add pre-push skill mirroring the CI merge gate locally • raise timeout for sandbox isolation test • add SSH sandbox integration tests for Py and TS

Evals v1.0.1

Thu, 25 Jun 2026 00:00:00 GMT

• bump actions/github-script from 8 to 9 • added fetch command to pull traces from different sources • bump actions/checkout from 6 to 7 • update opentelemetry-instrumentation-langchain requirement from <0.50.0,>=0.40.0 to >=0.40.0,<0.62.0 • provide tool parameters in evaluation prompt, update refusal and helpfulness prompts

Harness Python v1.44.0

Tue, 16 Jun 2026 00:00:00 GMT

• add turn-based eviction to InMemoryStorage • add message pinning section to conversation management page • design: add context management presets design doc • remove pin messaging barrel export • reduce workflow noise from deployment history and label churn

Harness TypeScript v1.6.0

Tue, 16 Jun 2026 00:00:00 GMT

• add turn-based eviction to InMemoryStorage • memory injection • copy middleware context inputs to prevent accidental mutation • add message pinning section to conversation management page • design: add context management presets design doc

Evals v1.0.0

Tue, 16 Jun 2026 00:00:00 GMT

• add GOAT multi-turn attack strategy • add PAIR single-stream multi-turn attack strategy • updated markdown files and skills to know the CLI exists • added RedTeamExperiment round-trips • redteam multi-agent session

Harness Python v1.43.0

Fri, 12 Jun 2026 00:00:00 GMT

• commit LICENSE and NOTICE directly into package directories • resolve dependabot alerts and bump CI actions • add python wasm release workflow • workflow_dispatch step for python wasm release • add optional hook order

Harness TypeScript v1.5.0

Fri, 12 Jun 2026 00:00:00 GMT

• sync strands-agents/docs and strands-agents/sdk-typescript into monorepo • commit LICENSE and NOTICE directly into package directories • resolve dependabot alerts and bump CI actions • add python wasm release workflow • workflow_dispatch step for python wasm release

Evals v0.3.0

Fri, 12 Jun 2026 00:00:00 GMT

• add built-in red teaming support • allow importing EvaluationReport from root • added trace-based evaluators into defaults • always return flattened report • add chaos resilience evaluators (failure communication, partial completion, recovery strategy)

Harness Python v1.42.0

Mon, 01 Jun 2026 00:00:00 GMT

• fix flaky tests to accept string or number • prepare directory layout for monorepo convergence • add endpoint_url parameter to S3SessionManager • plumb through cache tokens in metadata events • handle None text in message content sanitization

Harness TypeScript v1.4.0

Mon, 01 Jun 2026 00:00:00 GMT

First TypeScript release cut from the unified harness-sdk monorepo. The itemized change list was omitted during the repository merge — see the [release on GitHub](https://github.com/strands-agents/harness-sdk/releases/tag/typescript/v1.4.0) for the full compare. Earlier TypeScript history continues below from the original sdk-typescript repository.

Evals v0.2.1

Fri, 29 May 2026 00:00:00 GMT

• added evals-skills • add chaos testing module for fault injection

Harness Python v1.41.0

Thu, 21 May 2026 00:00:00 GMT

• add MultiAgentPlugin for Swarm and Graph orchestrators • bump starlette dependency to 1.x • add TTL support to auto-injected tool and system/user cache points • add use_native_token_count=True when expected

Harness TypeScript v1.3.0

Thu, 21 May 2026 00:00:00 GMT

• add interventions primitive • add search results tool • added bedrock-mantle support • add confirm action with built-in approve/deny semantics • defer tool announcement until after hooks resolve

Harness Python v1.40.0

Thu, 14 May 2026 00:00:00 GMT

• add proactive context compression to conversation managers • cache AccessDenied error for count tokens • update return type of latencyMs metric for ollama model provider • add official Discord link • set use_native_token_count default to false

Harness TypeScript v1.2.0

Thu, 14 May 2026 00:00:00 GMT

• refine sliding window coversation manager logic • add npm-pack test to ci-cd • cache AccessDenied error for count tokens • npm security audit fix • serialized interrupts and structuredOutput as JSON and citationsBlock

Evals v0.2.0

Thu, 14 May 2026 00:00:00 GMT

• update import to include DiagnosisTrigger • structured_output for ActorSimulator • added strands-reviewer workflow into evals • add official Discord link

Harness Python v1.39.0

Fri, 08 May 2026 00:00:00 GMT

• enable openai provider use aws profile • include root cause in MCPClientInitializationError message • add context window limit lookup table • fix count tokens for bedrock models • cache unsupported models for bedrocks token counting

Harness TypeScript v1.1.0

Fri, 08 May 2026 00:00:00 GMT

• migrate LifecycleBridge from deleted HookProvider to Plugin • format entry.ts • add hook fields on Before/After Tool Call Event and AfterInvocationEvent • fix stale imports and ToolRegistry API in WASM bridge • add missing root script delegations

Evals v0.1.17

Fri, 08 May 2026 00:00:00 GMT

• add multimodal evaluators and prompt templates for image-to-text evaluation • added analyze_root_cause • integrated rca into evaluation workflow • included more fields to the RCAItem • updated confidencelevel and diagnose_trigger to enum

Harness Python v1.38.0

Thu, 30 Apr 2026 00:00:00 GMT

• preserve CallToolResult.isError flag in MCPToolResult • add `count_token` method to model with naive estimation using tiktoken • added warning for default model awareness and is subject to change • forward ttl field from CachePoint in _format_system_messages • preserve cache points in system prompt during skills inj…

Harness TypeScript v1.0.0

Thu, 30 Apr 2026 00:00:00 GMT

• add prepack script so git installs build dist/ • add version field to root package.json so downstream file: insta… • add mcp tool result multimodal support • add concise inline comments in the wit contract • update wasm content with guides

Evals v0.1.16

Thu, 30 Apr 2026 00:00:00 GMT

• simplify devx by adding @eval_task decorator and handlers for wrapping task functions • detectors interface and failure_detector implementation • use PEP 604 union syntax and add Model type to HarmfulnessEvaluator

Harness Python v1.37.0

Wed, 22 Apr 2026 00:00:00 GMT

• add fallback trim point for tool-heavy conversations in SlidingWindowConversationManager • introduce checkpoint in experimental • add context_window_limit to model configs • skip MCPClient cleanup during interpreter finalization • update retired claude-3-haiku model in integration tests

Harness TypeScript v1.0.0-rc.5

Wed, 22 Apr 2026 00:00:00 GMT

• remove preview status from README • move TS package into strands-ts/ for monorepo structure • add strands-wasm, strands-py, strands-dev, and wit from wasm monorepo • update AGENTS.md and CONTRIBUTING.md for strands-ts workspace layout • update setuptools requirement from >=68.0 to >=82.0.1 in /strands-py

Harness Python v1.36.0

Fri, 17 Apr 2026 00:00:00 GMT

• accept callable hook callbacks in Agent constructor • handle missing optional fields in non-streaming citation conversion • add common gen_ai attributes to event loop cycle spans • use per-invocation usage in agent span attributes • add client_config param and deprecate a2a_client_factory

Harness TypeScript v1.0.0-rc.4

Fri, 17 Apr 2026 00:00:00 GMT

• evaluate all incoming edge handlers in Graph._findReady • add swarm+session manager resume logic,unit tests, integration test • support custom ClientFactory in A2AAgent for authenticated requests • track agent.messages token size • added function replacer for notebook_tool replace

Evals v0.1.15

Fri, 17 Apr 2026 00:00:00 GMT

• updated simulators README • add correctness evaluator, trace-based and reference-based • add OpenSearchProvider and OpenSearchSessionMapper

Harness Python v1.35.0

Wed, 08 Apr 2026 00:00:00 GMT

• add service_tier support to BedrockModel • forward _meta to MCP tool calls and fix model_dump alias seriali… • avoid Pydantic warnings for message_stop events • propagate tool exceptions to spans so StatusCode.ERROR is set correctly • enforce that the first message is a user message in the sliding window conversation manager

Harness TypeScript v1.0.0-rc.3

Wed, 08 Apr 2026 00:00:00 GMT

• add browser-based agent example • add multiagent snapshot • sync BEDROCK_CONTEXT_WINDOW_OVERFLOW_MESSAGES with Python SDK • update browser-agent example for current SDK API • add AgentAsTool internal class

Evals v0.1.14

Wed, 08 Apr 2026 00:00:00 GMT

• devx to allow for passing the Provider directly to evaluations with creating a wrapper task • add ground truth assertion support to Goal Success Rate evaluator

Harness Python v1.34.1

Wed, 01 Apr 2026 00:00:00 GMT

• fix type imcompatible • isolate langfuse env vars • restore explicit span.end() to fix span end_time regression • track context tokens

Harness Python v1.34.0

Tue, 31 Mar 2026 00:00:00 GMT

• remove Cohere from required integ test providers • add AgentAsTool • auto-wrap Agent instances passed in tools list • emit system prompt on chat spans per GenAI semconv • add support for MCP elicitation -32042 error handling

Harness TypeScript v1.0.0-rc.2

Tue, 31 Mar 2026 00:00:00 GMT

• make multiagent state implements stateSerializable • add VercelModel adapter for Language Model Specification v3 providers • rename VercelModelOptions.model to provider • add SummarizationConversationManager • mark LocalAgent interface as internal-only

Evals v0.1.13

Tue, 31 Mar 2026 00:00:00 GMT

• add LocalFileTaskResultStore for caching task results locally • langfuse provider changes to support newer version of langfuse

Harness TypeScript v1.0.0-rc.1

Thu, 26 Mar 2026 00:00:00 GMT

• remove top level telemetry export

Harness TypeScript v1.0.0-rc.0

Thu, 26 Mar 2026 00:00:00 GMT

• gemini model should handle throttling correctly • prevent self-handoffs in Swarm • use logger instead of console log that bypass logging system • update default model to Claude Sonnet 4 (claude-sonnet-4-6) • remove vi.restoreAllMocks() breaking Anthropic mock in browser tests

Evals v0.1.12

Thu, 26 Mar 2026 00:00:00 GMT

• added framework detection for traces from CloudWatch • unify sync/async evaluation by defaulting aevaluate to asyncio.to_thread • add TaskResultStore for caching and replaying task execution results • cloudwatch change for openinference

Harness Python v1.33.0

Tue, 24 Mar 2026 00:00:00 GMT

• summarization conversation manager sometimes returns empty response • remove agent from swarm test to get more consistency out of it • CRITICAL: Hard pin `litellm<=1.82.6` to mitigate supply chain attack

Harness Python v1.32.0

Fri, 20 Mar 2026 00:00:00 GMT

• ensure all cycle metrics include end time and duration • pin upper bound for mistralai dependency • override end_turn stop reason when streaming response contains toolUse blocks

Harness Python v1.31.0

Thu, 19 Mar 2026 00:00:00 GMT

• pass A2A request context metadata as invocation state • s3session manager bug • only evaluate outbound edges from completed nodes • always use string content for tool messages • widen openai dependency to support 2.x for litellm compatibility

Harness TypeScript v0.7.0

Thu, 19 Mar 2026 00:00:00 GMT

• add guardLatestUserMessage guardrail option • implement Plugin system to replace HookProvider • delete package-lock.json • add concrete metric assertions and usage support to MockMessageModel • add multi-agent orchestration documentation and examples

Evals v0.1.11

Thu, 19 Mar 2026 00:00:00 GMT

• allow flattened report • add environment state evaluation support • added Langchain mappers • add environment state support to OutputEvaluator • hatch run test-lint

Harness Python v1.30.0

Wed, 11 Mar 2026 00:00:00 GMT

• add "anthropic" cache strategy to bypass model ID check • serialize tool results as JSON when possible • summary manager using structured output • expose server instructions from InitializeResult on MCPClient • added LANGFUSE_BASE_URL check for additinoal attribute

Harness TypeScript v0.6.0

Wed, 11 Mar 2026 00:00:00 GMT

• add CitationsBlock for document citation support • remove circular import of barrel index.js in agent.ts • bump express-rate-limit from 8.2.1 to 8.3.0 • add session manager implementation and related tests • remove color assertions from image/video integ tests

Evals v0.1.10

Wed, 11 Mar 2026 00:00:00 GMT

• add deterministic evaluators for output and trajectory checks

Harness Python v1.29.0

Wed, 04 Mar 2026 00:00:00 GMT

• pin virtualenv to <21 for hatch bug • added latest semantic conventions as span attributes for langfuse • preserve guardrail_latest_message wrapping after tool execution • improve tool result truncation strategy • improve plugin creation devex with @hook and @tool decorators

Harness TypeScript v0.5.0

Wed, 04 Mar 2026 00:00:00 GMT

• auto-approve strands command and review workflows • multiagents - components • rename event loop to agent loop • remove rollup pin • add rebased telemetry implementation

Evals v0.1.9

Wed, 04 Mar 2026 00:00:00 GMT

• add CloudWatchProvider to pull remote cloudwatch traces and run evals against them. • add ToolSimulator for tool response simulation

Harness Python v1.28.0

Wed, 25 Feb 2026 00:00:00 GMT

• update region for agentcore in our new account • remove test that fails for python 3.14 • support union types and list of types for add_hook • make pyaudio an optional dependency by lazy loading • add Plugin Protocol for agent extensibility

Harness TypeScript v0.4.0

Wed, 25 Feb 2026 00:00:00 GMT

• add structured output support with Zod schema validation • sessionManager - Interface Design & Storage Implementation • add serialization/deserialization support for Message & ContentBlocks • implement low-level snapshot API • wrap raw data objects in event wrappers for agent stream

Evals v0.1.8

Wed, 25 Feb 2026 00:00:00 GMT

• handle parallel tool calls during tool extraction • trace provider interface • add LangfuseProvider for remote trace evaluation • bump amannn/action-semantic-pull-request from 5 to 6

Harness Python v1.27.0

Thu, 19 Feb 2026 00:00:00 GMT

• Propagate exceptions to AfterToolCallEvent for decorated tools (#1565) • add conventional commit workflow in PR • the A2AAgent returns empty AgentResult content • auto run review workflow on maintainer PR • correct output reference for approval-env in integration test

Harness TypeScript v0.3.0

Thu, 19 Feb 2026 00:00:00 GMT

• auto run review workflow on maintainer PR • add conventional commit workflow in PR • bump qs from 6.14.1 to 6.14.2 • add tool calling support • correct output reference for approval-env in integration test

Evals v0.1.7

Thu, 19 Feb 2026 00:00:00 GMT

• retrieve multiple text contentBlock in messageConent • add conventional commit workflow in PR • add tool info to concisenss, harmfulness, helpfulness and response relevance evaluators • update output variable name in workflow • update finalize condition for workflow execution

Harness Python v1.26.0

Wed, 11 Feb 2026 00:00:00 GMT

• bump aws-actions/configure-aws-credentials from 5 to 6 • add guidance on using Protocol instead of Callable for extensible interfaces • Implement basic support for Tasks • set empty text part data in `parts` for `Artifact` • use model stream to generate summary

Harness TypeScript v0.2.2

Wed, 11 Feb 2026 00:00:00 GMT

• run npm clean install • Support Anthropic as a model provider • add ModelThrottledError for rate limiting • add dependency management guidelines to AGENTS.md • add apiKey option to BedrockModel for bearer token authentication

Evals v0.1.6

Wed, 11 Feb 2026 00:00:00 GMT

• centralized InputT and OutputT • Added CoherenceEvaluator

Harness Python v1.25.0

Thu, 05 Feb 2026 00:00:00 GMT

• Increase pytest timeout to 45 seconds • Publish integ tests results to cloudwatch • add A2AAgent class • preserve nullable semantics for required Union[T, None] params • Feature: Allow s3Location as Document, Image, and Video location source

Harness TypeScript v0.2.1

Thu, 05 Feb 2026 00:00:00 GMT

• add sqs arn from secret • Add always condition to finalize step, fix audit, and update bash test to use real path • Add sqs arn • add text only implementation of gemini model • add retry property to AfterToolCallEvent

Evals v0.1.5

Thu, 05 Feb 2026 00:00:00 GMT

• replace deprecated structured_output methods with new API • Feat/retry throttled tenacity • added ResponseRelevanceEvaluator • bump aws-actions/configure-aws-credentials from 5 to 6 • added ConcisenessEvaluator

Harness Python v1.24.0

Thu, 29 Jan 2026 00:00:00 GMT

• fix flaky openai structured output test by adding Field guidance • interrupts - multiagent - do not emit AfterNodeCallEvent on interrupt • add workflow for lambda layer publish • Populate tool_args correctly for steering • interrupts - graph - agent based

Harness TypeScript v0.2.0

Thu, 29 Jan 2026 00:00:00 GMT

• Update to use shared auth check • Create v1 issue template for feature requests • Add condition to authorization-check job • Update issue template for v1 release • Rename issue template from 'v1' to 'V1 Release'

Evals v0.1.4

Thu, 29 Jan 2026 00:00:00 GMT

• include tool executions in _extract_trace_level

Harness Python v1.23.0

Wed, 21 Jan 2026 00:00:00 GMT

• prevent agent hang by checking session closure state • update sphinx-rtd-theme requirement from <2.0.0,>=1.0.0 to >=1.0.0,<4.0.0 • update websockets requirement from <16.0.0,>=15.0.0 to >=15.0.0,<17.0.0 • Update ruff configuration to apply pyupgrade to modernize python syntax • extract text from citationsContent in AgentResult.__str__

Harness TypeScript v0.1.6

Wed, 21 Jan 2026 00:00:00 GMT

• add support for task-augmented MCP tools • Test multiple node versions • bump the production-minor group with 3 updates • Add PR review agent - rebased • bump the production-minor group with 2 updates

Evals v0.1.3

Wed, 21 Jan 2026 00:00:00 GMT

• Multiple Tool Usage Not Detected in tools_use_extractor.py

Harness Python v1.22.0

Tue, 13 Jan 2026 00:00:00 GMT

• update github agent action to reference S3_SESSION_BUCKET • provide extra command content as the the prompt to the agent • [FEATURE] add MCP resource operations in MCP Tools • import errors for models with optional imports • add BidiGeminiLiveModel and BidiOpenAIRealtimeModel to the init

Harness TypeScript v0.1.5

Tue, 13 Jan 2026 00:00:00 GMT

• Fix audit issue • Fix audit errors + split out audit to a separate workflow • Update model to opus 4.5

Evals v0.1.2

Tue, 13 Jan 2026 00:00:00 GMT

• Isolate evaluator errors in run_evaluations • Add null check for toolResult in message extraction

Harness Python v1.21.0

Fri, 02 Jan 2026 00:00:00 GMT

• Add issue-responder action agent • support passing additional keyword arguments to FastAPI and Starlette constructors • add replace method to ToolRegistry • add meta field support to MCP tool results • remove unnecessary None from dict.get() calls

Harness TypeScript v0.1.4

Fri, 02 Jan 2026 00:00:00 GMT

• Add release-notes SOP for generating release notes • bump the development-dependencies group across 1 directory with 4 updates • bump the production-minor group with 2 updates • bump actions/upload-artifact from 5 to 6 • reset accumulatedReasoning state to prevent corrupting ReasoningBlock with accumulated content

Harness Python v1.20.0

Mon, 15 Dec 2025 00:00:00 GMT

• Remove toolResult message when toolUse is missing due to pagination in session management • interrupts - swarm • Return structured output JSON when AgentResult has no text • bidi - fix record direct tool call • Update doc strings to eliminate warnings in doc build

Harness TypeScript v0.1.3

Mon, 15 Dec 2025 00:00:00 GMT

• missing export entry for vended_tools/bash • Allow OpenAI apiKey to accept function for dynamic key loading • Enable vitest test reports + upload artifacts • Update TypeScript configurations for tests & source • Tweak agent runner to be more general-purpose

Evals v0.1.1

Mon, 15 Dec 2025 00:00:00 GMT

• fix broken links • Extract whether tool result was an error • updated README to include simulator feature • preserve non-ASCII characters in JSON file output • bump actions/download-artifact from 4 to 7

Harness TypeScript v0.1.2

Thu, 04 Dec 2025 00:00:00 GMT

• Update repository url for TypeDoc • fix broken API reference link in README • Update exports to account for CJS

Harness Python v1.19.0

Wed, 03 Dec 2025 00:00:00 GMT

• avoid KeyError in direct tool calls with context • attached custom attributes to all spans • hooks - before node call - cancel node • interrupts - support falsey responses • Bidirectional Streaming Agent

Harness TypeScript v0.1.1

Wed, 03 Dec 2025 00:00:00 GMT

• bump @aws-sdk/client-bedrock-runtime from 3.941.0 to 3.943.0 • bump actions/upload-artifact from 4 to 5 • bump the development-dependencies group with 10 updates • Update mcp version • Update MCP example in readme

Evals v0.1.0

Wed, 03 Dec 2025 00:00:00 GMT

Release 0.1.0

Harness TypeScript v0.1.0

Wed, 03 Dec 2025 00:00:00 GMT

Release 0.1.0

Harness Python v1.18.0

Fri, 21 Nov 2025 00:00:00 GMT

• multi agent input • interrupt - activate - set context separately • In PrintingCallbackHandler, make the verbose description and counting… • fix swarm session management integ test. • move tool caller definition out of agent module

Harness Python v1.17.0

Tue, 18 Nov 2025 00:00:00 GMT

• allow setting a timeout when creating MCPAgentTool • add validation for stream parameter in LiteLLM • handle MetadataEvents without optional usage and metrics • swarm - switch to handoff node only after current node stops • base64 decode byte data before placing in ContentBlocks

Harness Python v1.16.0

Wed, 12 Nov 2025 00:00:00 GMT

• handle non-JSON error messages from Gemini API • Handle "prompt is too long" from Anthropic • Add tool definitions to traces via semconv opt-in • Strip argument sections out of inputSpec top-level description • share thread context

Harness Python v1.15.0

Tue, 04 Nov 2025 00:00:00 GMT

• (bug): Drop reasoningContent from request • Dont initialize an agent on swarm init • add multiagent session/repository management. • Add stream_async • Fix #1077: properly redact toolResult blocks to avoid corrupting the conversation

Harness Python v1.14.0

Wed, 29 Oct 2025 00:00:00 GMT

• models - litellm - start and stop reasoning • add experimental AgentConfig with comprehensive tool management • make strands agent invoke_agent span as INTERNAL spanKind • add multiagent hooks, add serialize & deserialize function to multiagent base & agent result • Add Structured Output as part of the agent loop

Harness Python v1.13.0

Fri, 17 Oct 2025 00:00:00 GMT

• replace kwargs with invocation_state in agent APIs • updated semantic conventions, added timeToFirstByteMs into spans and metrics • added gen_ai.tool.description and gen_ai.tool.json_schema • validate ToolContext parameter name and raise clear error • integ tests - fix flaky structured output test

Harness Python v1.12.0

Fri, 10 Oct 2025 00:00:00 GMT

• Refactor and update tool loading to support modules • Adding Development Tenets to CONTRIBUTING.md • Revert "feat: implement concurrent message reading for session managers (#897)" • use tool for litellm structured_output when supports_response_schema=false • Add EmbeddedResource support to mcp (read GitHub file contents blocker)

Harness Python v1.11.0

Wed, 08 Oct 2025 00:00:00 GMT

• GeminiModel argument in README • tool - executors - concurrent - remove no-op gather • updated traces to match OTEL v1.37 semantic conventions • event loop - handle model execution • implement concurrent message reading for session managers

Harness Python v1.10.0

Mon, 29 Sep 2025 00:00:00 GMT

• add optional outputSchema support for tool specifications • add Gemini model provider • Improve OpenAI error handling • update sphinx-autodoc-typehints requirement from <2.0.0,>=1.12.0 to >=1.12.0,<4.0.0 • update sphinx requirement from <6.0.0,>=5.0.0 to >=5.0.0,<9.0.0

Harness Python v1.9.1

Fri, 19 Sep 2025 00:00:00 GMT

• decouple Strands ContentBlock and BedrockModel • Invoke callback handler for structured_output • Update prepare to use format instead of test-format • add explicit permissions to auto-close workflow • make mcp_instrumentation idempotent to prevent recursion errors

Harness Python v1.9.0

Wed, 17 Sep 2025 00:00:00 GMT

• add cache usage metrics to OpenTelemetry spans • improve docstring formatting • bump actions/setup-python from 5 to 6 • bump actions/github-script from 7 to 8 • bump aws-actions/configure-aws-credentials from 4 to 5

Harness Python v1.8.0

Wed, 10 Sep 2025 00:00:00 GMT

• Moved tool_spec retrieval to after the before model invocation callback • fix cyclic graph behavior • filter reasoningContent in Bedrock requests using DeepSeek • cleanup docs so the yields section renders correctly • Warn on unknown model configuration properties

Harness Python v1.7.1

Fri, 05 Sep 2025 00:00:00 GMT

• don't emit ToolStream events for non generator functions • adjust test_bedrock_guardrails to account for async behavior • replace invalid Hook names in doc comment with BeforeInvocationEvent & AfterInvocationEvent • Remove status field from toolResult for non-claude 3 models in Bedrock model provider • filter 'SDK_UNKNOWN_MEMBER' from response content

Harness Python v1.7.0

Tue, 02 Sep 2025 00:00:00 GMT

• Implement typed events internally • summarization manager - add summary prompt to messages • Use TypedEvent inheritance for callback behavior • claude citation support with BedrockModel • Enable hooks for MultiAgents

Harness Python v1.6.0

Tue, 26 Aug 2025 00:00:00 GMT

• fix non-serializable parameter of agent from toolUse block • Add .DS_Store to .gitignore • support A2A FileParts and DataParts • update pre-commit requirement from <4.2.0,>=3.2.0 to >=3.2.0,<4.4.0 • update ruff requirement from <0.5.0,>=0.4.4 to >=0.4.4,<0.13.0

Harness Python v1.5.0

Tue, 19 Aug 2025 00:00:00 GMT

• feature(graph): Allow cyclic graphs • request to include code snippet section • Add configuration option to MCP Client for server init timeout • Properly handle prompt=None & avoid agent hanging • add structured_output_span

Harness Python v1.4.0

Fri, 08 Aug 2025 00:00:00 GMT

• added mcp tracing context propagation • Change max_tokens type to int to match Anthropic API • Add additional intructions for contributors to find issues that are ready to be worked on • configurable request handler • update host per AppSec recommendation

Harness Python v1.3.0

Mon, 04 Aug 2025 00:00:00 GMT

• pin a2a-sdk>=0.2.16 to resolve #572 • pin a2a to a minor version while it is still in beta • sessions code fence, a2a tests & lint • raise dedicated exception when encountering max toke…

Harness Python v1.2.0

Wed, 30 Jul 2025 00:00:00 GMT

• Support for Amazon SageMaker AI endpoints as Model Provider • Remove leftover print statement from sagemaker model provider • [Feat] Update structured output error message • retain structured content in the AgentTool response • Add list_prompts, get_prompt methods

Harness Python v1.1.0

Thu, 24 Jul 2025 00:00:00 GMT

• Update to use dedicated github logo • deps(a2a): address interface changes and bump min version • expose STRANDS_TEST_API_KEYS_SECRET_NAME to integration tests • Don't re-run workflows on un/approvals • Doc fixes: suppressing some typos in various texts

Harness Python v1.0.1

Fri, 18 Jul 2025 00:00:00 GMT

• Switch readme to use light logo for better display in github dark mode • update development status classifier • enable parallel execution in graph workflow • Update README.md with Writer • prevent JSON serialization errors with non-serializable direct tool parameters

Harness Python v1.0.0

Tue, 15 Jul 2025 00:00:00 GMT

• configurable host and port and remove excessive logging • models - bedrock - remove signaling • Graph - support multi-modal inputs • deps(a2a): upper bound a2a sdk dep • models - ollama - init async client per request

Harness Python v0.3.0

Fri, 11 Jul 2025 00:00:00 GMT

• Implement the core system of typed hooks & callbacks • iterative tool handler process • remove thread pool wrapper • updated scope name, enable setting up meter • async model stream interface

Harness Python v0.2.1

Fri, 04 Jul 2025 00:00:00 GMT

• tools - parallel execution - sleep

Harness Python v0.2.0

Wed, 02 Jul 2025 00:00:00 GMT

• iterative event loop • Add additional exception information for common bedrock errors • iterative structured output • correcting incorrect docstring in tracer.py - non-existing argument documented • tools - do not remove $defs

Harness Python v0.1.9

Tue, 24 Jun 2025 00:00:00 GMT

• add meter • models - openai - images - b64 validate • Inline event loop helper functions • add structured output support using Pydantic models • Emit warning that default region behavior will be changing

Harness Python v0.1.8

Wed, 18 Jun 2025 00:00:00 GMT

• Enable underscores in direct method invocations to match hyphens • implement summarizing conversation manager • moved truncation logic to conversation manager and added should_truncate_results • Disallow similar tool names in the tool registry • add integration test workflow

Harness Python v0.1.7

Mon, 09 Jun 2025 00:00:00 GMT

• models - unsupported content types • Add CachePoint type definition to ContentBlock • [Docs] add meta copyright header • Update conversation manager interface • models - correct tool result content

Harness Python v0.1.6

Fri, 30 May 2025 00:00:00 GMT

• fix docstring for PrintingCallbackHandler.__call__ • Add unit tests for user agent changes • Increasing Coverage Message Processor : From 79% to 94% • Add non-streaming support to BedrockModel • Added hyphen to allowed characters in tool name validation

Harness Python v0.1.5

Mon, 26 May 2025 00:00:00 GMT

• models - openai - argument none • add open PRs badge + link to samples repo + change 'Docs' to 'Documentation' • add logo • add logo, title, badges, links to other repos, standardize headings • use dark logo for clearer visibility when system is using light color scheme

Harness Python v0.1.4

Fri, 23 May 2025 00:00:00 GMT

• Updated GitHub Action to use GitHub native approvals • models - litellm - capture usage • fixing various typos in markdowns and scripts • add missing quotation marks in pip install commands • Merge strands-agents user agent into existing botocore config

Harness Python v0.1.3

Wed, 21 May 2025 00:00:00 GMT

• update direct tool call references • Update README.md - corrected spelling of "model" • style guide • Update version to 0.1.3

Harness Python v0.1.2

Sun, 18 May 2025 00:00:00 GMT

• Update README.md mention of tools repo • Update README to mention Meta Llama API as a supported model provider • tracing of non-serializable values, e.g. bytes • use the AWS_REGION environment variable for the Bedrock model provider region if set and boto_session is not passed • v0.1.2

Harness Python v0.1.1

Sat, 17 May 2025 00:00:00 GMT

• Update the PyPI package description • update README with LlamaAPI • Update readme to include badges • actions: fix docs dispatch • actions: remove dispatch docs

Harness Python v0.1.0

Fri, 16 May 2025 00:00:00 GMT

Release 0.1.0