Release v0.4.0

🚀 Release v0.4.0

79 commits since v0.3.2 | Target: main @ 80a41b4

✨ Highlights

This is a major release introducing the Event Loop Node architecture, an interactive TUI dashboard, ClientIO gateway for client-facing agents, a GitHub tool, Slack tool integration (45+ tools), and a full migration from pip to uv for package management.

🆕 Features

🔄 Event Loop Node Architecture

• Implement event loop node framework (WP1-4, WP8, WP9, WP10, WP12) — a new node type that supports iterative, multi-turn execution with tool calls, judge-based acceptance, and client-facing interaction
• Emit bus events for runtime observability
• Add graph validation for client-facing nodes
• Soft-fail on schema mismatch during context handoff (no more hard failures)

🖥️ Interactive TUI Dashboard

• Add interactive TUI dashboard for agent execution with 3-pane layout (logs/graph + chat)
• Implement selectable logging, interactive ChatREPL, and thread-safe event handling
• Screenshot feature, header polish, keybinding updates
• Lazy widget loading, Horizontal/Vertical layout fixes
• Integrate agent builder with TUI

💬 ClientIO Gateway

• Implement ClientIO gateway for client-facing node I/O routing
• Client-facing nodes can now request and receive user input at runtime

🐙 GitHub Tool

• Add GitHub tool for repository and issue management
• Security and integration fixes from PR feedback

💼 Slack Tool Integration

• Add Slack bot integration with 45+ tools for multipurpose integration
• Includes CRM support capabilities

🔑 Credential Store

• Provider-based credential store (aden provider credential store by provider)
• Support non-OAuth key setup in credential workflows
• Quickstart credential store integration

📦 Migration to uv

• Migrate from pip to uv for package management
• Consolidate workspace to uv monorepo
• Migrate all CI jobs from pip to uv
• Check for litellm import in both CORE_PYTHON and TOOLS_PYTHON environments

🛠️ Other Features

• Tool truncation for handling large tool outputs
• Inject runtime datetime into LLM system prompts
• Add sample agent folder structure and examples
• Add message when LLM key is not available
• Edit bot prompt to decide on technical size of issues
• Update skills and agent builder tools; bump pinned ruff version

🐛 Bug Fixes

• ON_FAILURE edge routing: Follow ON_FAILURE edges when a node fails after max retries
• Malformed JSON tool arguments: Handle malformed JSON tool arguments safely in LiteLLMProvider
• Quickstart compatibility: Fix quickstart.sh compatibility and provider selection issues
• Silent exit fix: Resolve silent exit when selecting non-Anthropic LLM provider
• Robust compaction logic: Fix conversation compaction edge cases
• Loop prevention: Prevent infinite loops in feedback edges
• Tool pruning logic: Fix incorrect tool pruning behavior
• Text delta granularity: Fix text delta granularity and tool limit problems
• Tool call results: Fix formulation of tool call results
• Max retry reset: Reset max retry counter to 0 for event loop nodes
• Graph validation: Fix graph validation logic
• MCP exports directory: Handle missing exports directory in test generation tools
• Bash version support: Fix bash version compatibility

🏗️ Chores & CI

• Consolidate workspace to uv monorepo
• Migrate remaining CI jobs from pip to uv
• Clean up use of setup-python in CI
• Windows lint fixes
• Various lint and formatting fixes
• Update .gitignore and remove local claude settings
• Update issue templates

📖 Documentation

• Add Windows compatibility warning
• Update architecture diagram source path in README

👏 Contributors

Thanks to all contributors for this release:

• @mubarakar95 — Interactive TUI dashboard (3-pane layout, ChatREPL, selectable logging, screenshot feature, lazy widget loading)
• @levxn — Slack bot integration with 45+ tools including CRM support
• @lakshitaa-chellaramani — GitHub tool for repository and issue management
• @Acid-OP — ON_FAILURE edge routing fix after max retries
• @Siddharth2624 — Malformed JSON tool argument handling in LiteLLMProvider
• @Antiarin — Runtime datetime injection into LLM system prompts
• @kuldeepgaur02 — Fix silent exit when selecting non-Anthropic LLM provider
• @Anjali Yadav — Fix missing exports directory in MCP test generation tools
• @Hundao — Migrate remaining CI jobs from pip to uv
• @ranjithkumar9343 — Windows compatibility warning documentation
• @Yogesh Sakharam Diwate — Architecture diagram path update in README