sdk-python

v1.40.0 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 20d MCP Developer Tools

✓ 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

ReleasePort's take

Light signal

editorial:auto 13d

Release v1.40.0 of the SDK sets `use_native_token_count` default to false.

Why it matters: Update configurations before upgrading; existing setups relying on true may break.

AI summary

Set use_native_token_count default to false.

Type	Severity	Summary	CVE
Feature
Feature	Medium	Proactive context compression added to conversation managers. Proactive context compression added to conversation managers. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	AccessDenied error cached for count tokens. AccessDenied error cached for count tokens. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Official Discord link added to SDK. Official Discord link added to SDK. Source: llm_adapter@2026-05-21 Confidence: low	—
Bugfix
Bugfix	Medium	Swarm bug fixing context detachment with OpenTelemetry. Swarm bug fixing context detachment with OpenTelemetry. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Ollama latencyMs metric return type updated. Ollama latencyMs metric return type updated. Source: llm_adapter@2026-05-21 Confidence: low	—
Bugfix	Medium	use_native_token_count default set to false. use_native_token_count default set to false. Source: llm_adapter@2026-05-21 Confidence: low	—

Full changelog

feat: add proactive context compression to conversation managers by @opieter-aws in https://github.com/strands-agents/sdk-python/pull/2239
feat: cache AccessDenied error for count tokens by @opieter-aws in https://github.com/strands-agents/sdk-python/pull/2279
fix(ollama): update return type of latencyMs metric for ollama model provider by @paliwalvimal in https://github.com/strands-agents/sdk-python/pull/2236
feat: add official Discord link by @Albertozhao in https://github.com/strands-agents/sdk-python/pull/2285
fix: set use_native_token_count default to false by @opieter-aws in https://github.com/strands-agents/sdk-python/pull/2284
fix: swarm bug "Failed to detach context" with opentelemetry by @mehtarac in https://github.com/strands-agents/sdk-python/pull/2281

@paliwalvimal made their first contribution in https://github.com/strands-agents/sdk-python/pull/2236
@Albertozhao made their first contribution in https://github.com/strands-agents/sdk-python/pull/2285

Full Changelog: https://github.com/strands-agents/sdk-python/compare/v1.39.0...v1.40.0

Weekly OSS security release digest.

The CVE patches and breaking changes that affected production tools this week. One email, every Sunday.

No spam, unsubscribe anytime.

Share this release

Track sdk-python

Get notified when new releases ship.

About sdk-python