DeerFlow changelog: what's new each month
Every stable DeerFlow release summarised by month: the highlights, new features, improvements, fixes and anything you need to act on. 2 months covered; the current month updates daily.
September 2026
1 release: 2.1.0
September brought foundational improvements to DeerFlow's infrastructure and execution model, with stronger security guarantees and clearer runtime boundaries for skill management.
- Database checkpoint delta snapshot frequency configuration has moved to a new location.
- /mnt/skills is now reserved and cannot be used for other purposes.
- Docker now binds loopback by default; review port binding configurations if affected.
Highlights
- Trace IDs now included unconditionally in all Gateway HTTP responses for better observability.
- Memory management is now pluggable through configurable manager classes for custom implementations.
- Agent tool execution is now verifiable with tamper-evident signatures on each call.
- Skill packages now have clearer runtime boundaries defined by SKILL.md directories.
New
- Verifiable agent execution with tamper-evident signatures on tool calls.
- Pluggable memory management via configurable manager classes.
- Unconditional trace IDs in all Gateway HTTP responses.
- Docker loopback binding by default for published entry ports.
Improved
- Sandbox replica enforcement for E2B as a capacity limit with updated defaults.
- SKILL.md directory handling clarified as explicit runtime package boundaries.
- /mnt/skills is now reserved for managed enabled-only skill projections.
- Database checkpoint configuration relocated for better organization.
June 2026
1 release: 2.0.0
June brought major upgrades to DeerFlow's core capabilities, including persistent run hydration, self-updating custom agents, and expanded model support. The release also enhanced channel integrations and observability features.
Highlights
- Runs now hydrate from RunStore and persist across interruptions, allowing workflows to resume seamlessly.
- Custom agents can now persist edits to themselves, enabling self-improving agent behaviour.
- Users can bind their own Slack and other IM channel connections directly without admin setup.
- Added StepFun and MiMo reasoning models to the available model options.
- Real-time token usage streaming for subagents displayed in the header with detailed spans.
New
- Run hydration from RunStore with persistence across interrupted runs
- Self-updating custom agents that persist their own edits
- User-owned IM channel connections for Slack and other platforms
- StepFun and MiMo reasoning models
- Community search integration
- Discord mention-only mode and thread routing
- Real-time subagent token usage streaming to header
- Configurable loop detection with per-tool frequency overrides
Improved
- Trace names now cleaner for leadagent and custom-agent traces
- Session IDs improved in trace output
- Discord channel capabilities expanded with new routing options
Summaries are written automatically from the official release notes (full changelog ↗); check the original notes before relying on a detail. DeerFlow: pricing, features and alternatives · All changelogs