Build LangChain Tool: NEAR Event Listener

Overview

Create a LangChain tool that monitors NEAR blockchain events and triggers agent actions based on on-chain activity.

Why This Matters

Reactive agents need to respond to blockchain events. This tool enables event-driven agent architectures.

Technical Requirements

• Subscribe to account events
• Filter by event type
• Parse event data
• Trigger callbacks
• Handle reconnection

Deliverables

1. PyPI package
2. Event subscription API
3. Filtering capabilities
4. Reliable reconnection