| name | concepts |
| description | Monad architecture concepts that affect how developers build apps — async execution, parallel execution, block states, reserve balance, EIP-7702, real-time data sources, and execution events. Fetch this skill when the developer needs to understand Monad-specific behavior that differs from Ethereum. |
Monad is Ethereum-compatible but its architecture introduces behaviors that developers must understand. Only fetch the references relevant to the task at hand.
What to Fetch by Task
| I'm dealing with... | Fetch |
|---|
| Newly funded accounts can't send transactions, funding delays | async-execution.md |
| Whether existing Solidity contracts need changes for Monad | parallel-execution.md |
Choosing between latest, safe, finalized block tags | block-states.md |
| Transaction reverts due to low balance, 10 MON floor, emptying transactions | reserve-balance.md |
| Smart wallet delegation, EIP-7702, session keys, gas sponsorship | eip-7702.md |
| Subscribing to events, WebSocket feeds, high-throughput data ingestion | realtime-data.md |
| Block lifecycle events, speculative data, BLOCK_START/QC/FINALIZED | execution-events.md |
Quick Summary
- Async execution: Consensus and execution are decoupled. 3-block delayed state view. Newly funded accounts need ~1.2s before sending txs.
- Parallel execution: Optimistic concurrency — identical results to Ethereum. No contract changes needed.
- Block states: Proposed → Voted → Finalized → Verified. Maps to
latest / safe / finalized.
- Reserve balance: 10 MON floor per EOA. Low-balance accounts limited to 1 tx per ~1.2s.
- EIP-7702: EOAs delegate to contracts for smart wallet features. 10 MON floor applies. No CREATE/CREATE2 in delegated context.
- Real-time data: 3 sources — Geth-compatible WS, Monad extended WS, Execution Events SDK. Most apps use source 1.
- Execution events: Consensus events track block state transitions. Execution events are speculative EVM traces.
