Issues

• BidiAgent.cancel(message=...) should surface in output history

  area-bidirectional-streamingarea-hilenhancementpython

  PythonFilter by Language: Python
  Feature

  strands-agents/harness-sdk#5162 · Filter by author Unshure opened on Oct 15, 2026

• Epic: Anthropic distillation protection (preserved thinking and reasoning_extraction refusals)

  area-contextarea-modelbug
  Bug

  strands-agents/harness-sdk#5160 · Filter by author yonib05 opened on Oct 15, 2026

• [BUG] Structured output fails with a 400 on Claude Opus 5.5 / Sonnet 5.5 / Fable 5.1 because the forced tool_choice fallback is rejected

  area-modelarea-structured-outputbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5156 · Filter by author mehtarac opened on Oct 15, 2026

• [BUG] OpenAI/LiteLLM/Mistral providers put injected user text before tool messages, causing a 400 in tool loops (Python port of #4234)

  area-contextarea-modelbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5150 · Filter by author devrahulbanjara opened on Oct 15, 2026

• [BUG] Context window limit unknown for GPT-6 Sol, GPT-6 Luna and GPT-6.1 Sol

  area-contextarea-modelbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5146 · Filter by author Katsuhito04 opened on Oct 15, 2026

• [BUG] tool_use stop with no toolUse blocks breaks the next request

  area-modelarea-toolbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5144 · Filter by author masiljangajji opened on Oct 15, 2026

• [BUG] ModelRouter resets only the built-in retry budget on a model switch; hook-based retries give the fallback model no retries

  area-hooksarea-modelbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5142 · Filter by author AkshayShah03 opened on Oct 15, 2026
  1

• [FEATURE] Move cache_config onto BaseModelConfig

  area-configarea-modelenhancementpython

  PythonFilter by Language: Python
  Feature

  strands-agents/harness-sdk#5130 · Filter by author opieter-aws opened on Oct 14, 2026

• [BUG] TS GoogleModel maps Gemini SAFETY and RECITATION finish reasons to endTurn

  area-modelbugtypescript

  TypeScriptFilter by Language: TypeScript
  Bug

  strands-agents/harness-sdk#5127 · Filter by author SergeevDmitry opened on Oct 14, 2026

• [FEATURE] CacheConfig: strategy buckets + per-provider auto resolution table

  area-contextarea-modelenhancement
  Feature

  strands-agents/harness-sdk#5126 · Filter by author opieter-aws opened on Oct 13, 2026

• [FEATURE] Declarative Tools for Strands: Define Tools in JSON, Let the SDK Call the APIs

  area-configarea-toolenhancementpython

  PythonFilter by Language: Python
  Feature

  strands-agents/harness-sdk#5119 · Filter by author srikanthreddy007 opened on Oct 13, 2026

• [FEATURE] Model routing: production-grade FallbackStrategy (fail_over_on, cooldown)

  area-contextarea-modelenhancementpythonsdk-parity

  PythonFilter by Language: Python
  Feature

  strands-agents/harness-sdk#5110 · Filter by author JackYPCOnline opened on Oct 13, 2026
  1

• [BUG] background_tasks: a bare string selector is split into characters, so "never" silently does not apply

  area-agentarea-devxbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5083 · Filter by author schinchli opened on Oct 12, 2026
  1

• Deprecate non-cancel() loop-termination mechanisms

  area-agentarea-hooksdesignenhancementpython

  PythonFilter by Language: Python
  Design

  strands-agents/harness-sdk#5077 · Filter by author Unshure opened on Oct 12, 2026

• Graduate stop tool out of experimental

  area-devxarea-toolenhancementpython

  PythonFilter by Language: Python
  Feature

  strands-agents/harness-sdk#5076 · Filter by author Unshure opened on Oct 12, 2026

• [FEATURE] Expose MCP -32042 URL elicitations as structured data

  area-hilarea-mcpenhancementpython

  PythonFilter by Language: Python
  Feature

  strands-agents/harness-sdk#5069 · Filter by author akhtrma-amz opened on Oct 12, 2026

• [BUG] TS Graph: a node interrupt while other ready nodes sit unscheduled in targets deadlocks graph.invoke() forever on queue.wait()

  area-hilarea-multiagentbugtypescript

  TypeScriptFilter by Language: TypeScript
  Bug

  strands-agents/harness-sdk#5066 · Filter by author BlueX888 opened on Oct 11, 2026
  1

• docs: document the structured-output retry contract (tool-name forcing) after #4263

  area-structured-outputdocumentation
  Documentation

  strands-agents/harness-sdk#5064 · Filter by author CodeAlex52 opened on Oct 11, 2026

• [BUG] BedrockNovaSonicModel.start() resolves boto3 credentials on the event loop

  area-asyncarea-bidirectional-streamingbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5054 · Filter by author nanhanq1 opened on Oct 10, 2026
  1

• [BUG] BedrockKnowledgeBaseStore blocks the event loop for every knowledge base call

  area-asyncarea-persistencebugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5052 · Filter by author nanhanq1 opened on Oct 10, 2026

• [BUG] (ts) sandbox timeout/abort kills only the sh wrapper; the python3/pipeline child keeps running

  area-serverbugtypescript

  TypeScriptFilter by Language: TypeScript
  Bug

  strands-agents/harness-sdk#5044 · Filter by author strandly-the-agent opened on Oct 9, 2026

• [PORT] strict_tools schema transform: recursive $ref crash, unclosed objects, and overwritten $ref targets

  area-modelbugpython

  PythonFilter by Language: Python
  Chore

  strands-agents/harness-sdk#5042 · Filter by author jimbrub opened on Oct 9, 2026
  

• [BUG] Agent.as_tool() causes Bedrock ValidationException when tool input is dict without "input" key

  area-modelarea-toolbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5037 · Filter by author stephentreacy opened on Oct 9, 2026

• [BUG] SageMakerAIModel blocks the event loop for the duration of every model call

  area-asyncarea-modelbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5033 · Filter by author nanhanq1 opened on Oct 9, 2026

• [BUG] MistralModel crashes on reasoning models (Mistral Large 4): content returned as list of ThinkChunk/TextChunk

  area-modelbugpython

  PythonFilter by Language: Python
  Bug

  strands-agents/harness-sdk#5032 · Filter by author margotmercier opened on Oct 9, 2026
  1