deepagents

vdeepagents==0.6.2 scope: deepagents Feature

This release adds 1 notable feature for engineering teams evaluating rollout.

Published 16d AI Agents & Assistants

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✓ No known CVEs patched

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✓ No known CVEs patched in this version

Topics

ai deepagents langchain langgraph python typescript

Summary

AI summary

Updates Bug Fixes, Subagents, and Summarization across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Feature	Low	Add system_prompt override slot to memory, skills, and summarization Add system_prompt override slot to memory, skills, and summarization Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high	—
Bugfix
Bugfix	Medium	Patch invalid tool calls Patch invalid tool calls Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high	—
Bugfix	Medium	Align MemoryMiddleware prompt with investigate-first agent behavior Align MemoryMiddleware prompt with investigate-first agent behavior Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high	—
Bugfix	Low	Update subagent prompt and improve last message fetching robustness Update subagent prompt and improve last message fetching robustness Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high	—
Bugfix	Low	Truncate trailing ToolMessages to keep context within keep limit Truncate trailing ToolMessages to keep context within keep limit Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high	—
Bugfix	Low	Surface OS errors in sandbox ls/read/edit/glob operations Surface OS errors in sandbox ls/read/edit/glob operations Source: granite4.1:8b-q6_K@2026-05-19 Confidence: high	—

Full changelog

Features

Add system_prompt override slot to memory, skills, and summarization (#3451) (7583f4a)

Bug Fixes

Patch invalid tool calls (#3386) (c916d1b)
Align MemoryMiddleware prompt with investigate-first agent behavior (#2461) (d53c8f4)
Subagents: update prompt and make fetching of last message more robust (#3406) (4421bec)
Summarization: truncate trailing ToolMessages to keep context within keep limit (#3405) (bee514f)
Surface OS errors in sandbox ls/read/edit/glob (#3359) (7598bd9)

Thanks to our community contributors: @AdemBoukhris457

Internal maintainers: @nick-hollon-lc, @ccurme, @mdrxy

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About deepagents

Agent harness built with LangChain and LangGraph. Equipped with a planning tool, a filesystem backend, and the ability to spawn subagents - well-equipped to handle complex agentic tasks.

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Related context

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Earlier breaking changes

vdeepagents-cli==0.2.0 `deepagents deploy` now targets Managed Deep Agents API; removes `deepagents dev`, `deepagents.toml`, and `--config`/`--dry-run` flags.