concepts

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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.

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Sourcetherealharpaljadeja/monskills

Added on2026-08-01

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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.

concepts

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