harness-sdk

v1.19.0 Feature

This release adds 2 notable features for engineering teams evaluating rollout.

Published 6mo AI Agents & Assistants

✓ No known CVEs patched

✓ No known CVEs patched in this version

Topics

agentic agentic-ai agents ai anthropic autonomous-agents

+13 more

bedrock genai litellm llama llm machine-learning mcp multi-agent-systems ollama openai opentelemetry python strands-agents

Summary

AI summary

Updates What's New, Experimental, and fix across a mixed release.

Full changelog

Bidirectional Agents (Experimental): This release introduces BidiAgent for real-time voice conversations with AI agents through persistent connections that support continuous audio streaming, natural interruptions, and concurrent tool execution. This experimental feature allows developers to build voice assistants and interactive applications with support for Amazon Nova Sonic, OpenAI Realtime API, and Google Gemini Live.
Steering (Experimental): Enables modular prompting with progressive disclosure for complex agent workflows through just-in-time feedback loops. Instead of front-loading all instructions into monolithic prompts, steering handlers provide contextual guidance that appears when relevant, maintaining agent effectiveness on multi-step tasks while preserving adaptive reasoning capabilities.

fix: avoid KeyError in direct tool calls with context by @qmays-phdata in https://github.com/strands-agents/sdk-python/pull/1213
fix: attached custom attributes to all spans by @poshinchen in https://github.com/strands-agents/sdk-python/pull/1235
hooks - before node call - cancel node by @pgrayy in https://github.com/strands-agents/sdk-python/pull/1203
interrupts - support falsey responses by @pgrayy in https://github.com/strands-agents/sdk-python/pull/1256
Bidirectional Streaming Agent by @mehtarac in https://github.com/strands-agents/sdk-python/pull/1276
mcp - elicitation - fix server request test by @pgrayy in https://github.com/strands-agents/sdk-python/pull/1281
feat(steering): add experimental steering for modular prompting by @dbschmigelski in https://github.com/strands-agents/sdk-python/pull/1280
test(steering): adjust integ test system prompts to reduce flakiness by @dbschmigelski in https://github.com/strands-agents/sdk-python/pull/1282

@qmays-phdata made their first contribution in https://github.com/strands-agents/sdk-python/pull/1213

Full Changelog: https://github.com/strands-agents/sdk-python/compare/v1.18.0...v1.19.0

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About harness-sdk

A model-driven approach to building AI agents in just a few lines of code.