How do I install the Hedera Smart Contract Evm skill?

Run npx skillmds@latest add evaluris-solutions/hedera-smart-contract-evm in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Hedera Smart Contract Evm safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: executes scripts, makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Hedera Smart Contract Evm?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Hedera Smart Contract Evm free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Hedera Smart Contract Evm?

Evaluris-Solutions (@evaluris-solutions) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Hedera Smart Contract Evm by evaluris-solutions

Name: Hedera Smart Contract Evm
Rating: 4.2 (5 reviews)
Author: Evaluris-Solutions

Hedera Smart Contract Evm

Deploy and interact with Solidity on Hedera Smart Contract Service using Hardhat, Hashio JSON-RPC relay, ethers.js v6, contract verification on Sourcify-compatible flows, gas comparisons, HIP-1086 jumbo transaction awareness for large bytecode. Use when user mentions Hardhat Hedera, Hashio, deploy contract testnet, ethers Hedera, Solidity Hedera, JSON-RPC relay, contract verify Sourcify, gas estimation Hedera vs Ethereum.

File contents

Overview

Hedera exposes an EVM-compatible execution layer reachable via the JSON-RPC Relay (public Hashio endpoints per environment). Developers reuse standard Ethereum tooling (Hardhat, ethers.js) with caveats documented under Understanding Hedera's EVM Differences.

When to use this skill

Wiring MetaMask / Hardware wallets using ECDSA accounts mapped to Hedera aliases.
Estimating gas differences vs Ethereum baseline deployments.

Prerequisites

EVM private key funded with HBAR on target network (converted to ECDSA account — follow portal docs).
Node.js + repo npm install for Hardhat toolchain.

Workflow

Configure relay endpoint — set JSON_RPC_URL (testnet defaults in references/hardhat-config.md).

Compile — from repo root:

npx hardhat compile --config plugins/hedera-skills/skills/hedera-smart-contract-evm/hardhat.config.cjs

Deploy — run scripts/deploy.cjs per header comment in file.
Interact — use ethers Contract facade against deployed address.
Verify — follow Verifying Smart Contracts — typically Sourcify-style flows via Hashscan integrations (verify UI specifics periodically).
Large bytecode — review HIP-1086 Jumbo Transaction guidance for deploying contracts whose bytecode exceeds legacy limits (references/hip-1086-jumbo-tx.md).

Examples

Example 1

“Deploy an ERC-20 clone to Hedera testnet.”

Reuse OpenZeppelin contracts; confirm decimals expectations (HTS vs ERC-20 bridging nuances).

Example 2

“Gas seems higher than Ethereum L2.”

Compare fixed relay conversion & intrinsic Hedera fees — profile with eth_estimateGas.

Example 3

“Deployment fails size limit.”

Evaluate HIP-1086 patterns or split contracts via libraries.

Troubleshooting

Symptom	Tip
Wrong chain id	Align `chainId` with docs for chosen network
`INSUFFICIENT_GAS`	Increase gas limit / payer balance

References

Local: references/hardhat-config.md, references/gas-comparison.md, references/hip-1086-jumbo-tx.md
Docs: Deploy with Hardhat, JSON-RPC Relay

---name: hedera-smart-contract-evmdescription: Deploy and interact with Solidity on Hedera Smart Contract Service using Hardhat, Hashio JSON-RPC relay, ethers.js v6, contract verification on Sourcify-compatible flows, gas comparisons, HIP-1086 jumbo transaction awareness for large bytecode. Use when user mentions Hardhat Hedera, Hashio, deploy contract testnet, ethers Hedera, Solidity Hedera, JSON-RPC relay, contract verify Sourcify, gas estimation Hedera vs Ethereum.---## OverviewHedera exposes an **EVM-compatible execution layer** reachable via the **JSON-RPC Relay** (public Hashio endpoints per environment). Developers reuse standard Ethereum tooling ([Hardhat](https://hardhat.org/), [ethers.js](https://docs.ethers.org/)) with caveats documented under [Understanding Hedera's EVM Differences](https://docs.hedera.com/hedera/core-concepts/smart-contracts/understanding-hederas-evm-differences-and-compatibility.md).## When to use this skill- Wiring **MetaMask / Hardware wallets** using ECDSA accounts mapped to Hedera aliases.- Estimating **gas** differences vs Ethereum baseline deployments.## Prerequisites- **EVM private key** funded with HBAR on target network (converted to ECDSA account — follow portal docs).- Node.js + repo `npm install` for Hardhat toolchain.## Workflow1. **Configure relay endpoint** — set `JSON_RPC_URL` (testnet defaults in [references/hardhat-config.md](references/hardhat-config.md)).2. **Compile** — from repo root: ```bash npx hardhat compile --config plugins/hedera-skills/skills/hedera-smart-contract-evm/hardhat.config.cjs ```3. **Deploy** — run `scripts/deploy.cjs` per header comment in file.4. **Interact** — use ethers `Contract` facade against deployed address.5. **Verify** — follow [Verifying Smart Contracts](https://docs.hedera.com/hedera/core-concepts/smart-contracts/verifying-smart-contracts-beta.md) — typically Sourcify-style flows via Hashscan integrations (verify UI specifics periodically).6. **Large bytecode** — review HIP-1086 **Jumbo Transaction** guidance for deploying contracts whose bytecode exceeds legacy limits ([references/hip-1086-jumbo-tx.md](references/hip-1086-jumbo-tx.md)).## Examples**Example 1**> “Deploy an ERC-20 clone to Hedera testnet.”Reuse OpenZeppelin contracts; confirm decimals expectations (HTS vs ERC-20 bridging nuances).**Example 2**> “Gas seems higher than Ethereum L2.”Compare fixed relay conversion & intrinsic Hedera fees — profile with `eth_estimateGas`.**Example 3**> “Deployment fails size limit.”Evaluate HIP-1086 patterns or split contracts via libraries.## Troubleshooting| Symptom | Tip || --- | --- || Wrong chain id | Align `chainId` with docs for chosen network || `INSUFFICIENT_GAS` | Increase gas limit / payer balance |## References- Local: [references/hardhat-config.md](references/hardhat-config.md), [references/gas-comparison.md](references/gas-comparison.md), [references/hip-1086-jumbo-tx.md](references/hip-1086-jumbo-tx.md)- Docs: [Deploy with Hardhat](https://docs.hedera.com/hedera/getting-started-evm-developers/deploy-a-smart-contract-with-hardhat.md), [JSON-RPC Relay](https://docs.hedera.com/hedera/core-concepts/smart-contracts/json-rpc-relay.md)

Frequently asked questions