Evmcp

Name: Evmcp
Author: SiriusLattice

by SiriusLatticeversion 0.1.3i★ –iRuns on your computer

Registry nameio.github.siriuslattice/evmcp

Install

Overview

Description from the maker (original English)

Multi-chain EVM blockchain data with companion smart contracts

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Crypto & blockchain
You need to fill in: ALCHEMY_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: ALCHEMY_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "evmcp": {
      "command": "npx",
      "args": [
        "-y",
        "evmcp"
      ],
      "env": {
        "ALCHEMY_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add evmcp --env ALCHEMY_API_KEY=your-value -- npx -y evmcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "evmcp": {
      "command": "npx",
      "args": [
        "-y",
        "evmcp"
      ],
      "env": {
        "ALCHEMY_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "evmcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "evmcp"
      ],
      "env": {
        "ALCHEMY_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

ALCHEMY_API_KEY secret required env
Alchemy API key for RPC access

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account SiriusLattice, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Crypto & blockchaini

More stars than 0% of the other 1611 servers in this category
Published to the registry more recently than 10% of the other 1611 servers in this category
Basic checks equal to or better than 100% of the other 1611 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Evmcp safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: ALCHEMY_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.3) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Agent Data Tools: Prices and DeFi, Agent Data Tools: Chain data, Bellchain

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

evmcp

EVM + MCP — give your AI assistant blockchain superpowers.

MCP server providing real-time access to on-chain data across Base, Optimism, Avalanche, Celo, and Arbitrum, with companion smart contracts deployed on-chain for batch queries and cross-chain data.

How it Works

EVMCP implements the Model Context Protocol (MCP), a standard that lets AI assistants call external tools. When connected, your AI assistant gains 28 read-only blockchain tools it can invoke to query balances, decode transactions, compare gas prices, and more across five EVM chains.

What sets EVMCP apart is its companion smart contracts — four Solidity contracts deployed on Avalanche and Celo that enable batch queries via Multicall3, an on-chain tool registry, event aggregation, and cross-chain balance caching. The MCP server reads from these contracts; all write operations are performed separately by an admin CLI.

Quick Start

With Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

"mcpServers": { "evmcp": { "command": "npx", "args": ["-y", "evmcp"], "env": { "ALCHEMY_API_KEY": "your_key_here" } } } }

With Claude Code

claude mcp add evmcp -- npx -y evmcp

Supported Chains

Chain	Chain ID	Native Token	Companion Contracts
Base	8453	ETH	Not yet deployed
Optimism	10	ETH	Not yet deployed
Avalanche C-Chain	43114	AVAX	Deployed
Celo	42220	CELO	Deployed
Arbitrum One	42161	ETH	Not yet deployed

Ethereum mainnet (chain ID 1) is also supported for ENS resolution only.

Tools (29 total)

Balance (3)

Tool	Description
`getBalance`	Get the native token balance (ETH/AVAX/CELO) of an address on a specific chain
`getTokenBalance`	Get the ERC20 token balance of an address on a specific chain
`getMultiChainBalance`	Get the native token balance of an address across all 5 supported chains in parallel

Block (3)

Tool	Description
`getBlock`	Get a block by its hash on a specific chain
`getBlockByNumber`	Get a block by its number on a specific chain, or pass "latest" for the most recent block
`getLatestBlock`	Get the latest block number, timestamp, and base fee for a specific chain

Transaction (3)

Tool	Description
`getTransaction`	Get a transaction by its hash on a specific chain
`getTransactionReceipt`	Get the receipt for a transaction including status, gasUsed, and logs
`decodeTransaction`	Decode a transaction's function call using a provided ABI

Contract (3)

Tool	Description
`readContract`	Call a read-only function on a smart contract with a provided ABI
`getContractCode`	Check if an address has contract code deployed, with bytecode length and hash
`getStorageAt`	Read the raw value of a storage slot at a specific address

Token (2)

Tool	Description
`getERC20Info`	Get ERC20 token metadata including name, symbol, decimals, and total supply
`getTokenAllowance`	Get the ERC20 token allowance granted by an owner to a spender

Gas (3)

Tool	Description
`getGasPrice`	Get current gas price and EIP-1559 fee data for a specific chain
`estimateGas`	Estimate gas for a transaction on a specific chain
`compareGasAcrossChains`	Compare current gas prices across all 5 supported chains

ENS (2)

Tool	Description
`resolveENS`	Resolve an ENS name (e.g. vitalik.eth) to an Ethereum address via Ethereum L1
`lookupAddress`	Reverse lookup an address to its ENS name via Ethereum L1

Events (2)

Tool	Description
`getContractEvents`	Get event logs emitted by a contract on a specific chain
`decodeEventLog`	Decode a raw event log using a provided ABI

Chain and Health (3)

Tool	Description
`getChainInfo`	Get chain name, chain ID, current block number, block time, and native symbol
`isContractDeployed`	Check if an address has contract code deployed on all 5 supported chains
`healthCheck`	Test connectivity to all 6 RPC endpoints (Ethereum, Base, Optimism, Avalanche, Celo, Arbitrum)

Batch (1)

Tool	Description
`batchQuery`	Execute multiple read calls in a single RPC request using Multicall3

Cross-Chain (2)

Tool	Description
`compareBalances`	Compare native token balances for an address across all 5 chains
`crossChainActivity`	Check transaction counts for an address across all 5 chains

Registry (1)

Tool	Description
`queryRegistry`	Read registered tool metadata from the on-chain MCPRegistry companion contract

Optimizer (1)

Tool	Description
`gasOptimizer`	Recommends the cheapest chain for a transaction, accounting for L1 data fees on Base/Optimism/Arbitrum

Resources (4)

URI Pattern	Description	Cache TTL
`chain://{chainId}/status`	Current block height and gas price for a chain	12s
`chain://{chainId}/gas`	Base fee, gas price, and priority fee in gwei	12s
`chain://{chainId}/tokens/popular`	Popular token addresses and decimals (hardcoded for v1)	1 hour
`evmcp://chains`	All supported chains with IDs, symbols, and companion contract addresses	Static

Supported chain IDs for templated resources: 8453 (Base), 10 (Optimism), 43114 (Avalanche), 42220 (Celo), 42161 (Arbitrum).

Prompts (4)

Prompt	Arguments	Description
`analyze-wallet`	`address`	Multi-chain balance and activity analysis of a wallet
`audit-contract`	`contractAddress`, `chain`	Basic inspection and audit workflow for a smart contract
`compare-chains`	(none)	Compare gas costs, speed, and characteristics across all chains
`investigate-tx`	`txHash`, `chain`	Decode, analyze, and trace a transaction in detail

Companion Contracts

Four Solidity contracts are deployed on Avalanche and Celo. The MCP server reads from these contracts to provide batch queries, on-chain tool metadata, and cross-chain data. Base and Optimism deployments are planned.

Avalanche C-Chain (43114)

Contract	Address
MCPRegistry	`0x62402b65bfb4Fd022285A6FC2F26d8caEEc3D055`
BatchQuery	`0xfDc19e0617AdF1811A68Aa1575409F3769f39491`
EventAggregator	`0xECE24a53A28F088351EC2Da258f78479e81A8007`
CrossChainCache	`0x0899a6Ef23c6B39A4D9B877B219645B89209A670`

Celo (42220)

Contract	Address
MCPRegistry	`0x62402b65bfb4Fd022285A6FC2F26d8caEEc3D055`
BatchQuery	`0xfDc19e0617AdF1811A68Aa1575409F3769f39491`
EventAggregator	`0xECE24a53A28F088351EC2Da258f78479e81A8007`
CrossChainCache	`0x0899a6Ef23c6B39A4D9B877B219645B89209A670`

Contract Descriptions

MCPRegistry -- On-chain metadata for all EVMCP tools (names, descriptions, versions). Owner-only writes.
BatchQuery -- Optimized batch reads via Multicall3. Includes multi-balance, multi-contract-check, and multi-token-balance helpers.
EventAggregator -- Caches event count summaries per contract. Updated by the admin CLI.
CrossChainCache -- Stores balance snapshots for cross-chain queries. Updated by the admin CLI.

Environment Variables

Variable	Required	Description
`ALCHEMY_API_KEY`	Yes*	Alchemy API key (covers all chains)
`BASE_RPC_URL`	No*	Override RPC URL for Base
`OPTIMISM_RPC_URL`	No*	Override RPC URL for Optimism
`AVALANCHE_RPC_URL`	No*	Override RPC URL for Avalanche
`CELO_RPC_URL`	No*	Override RPC URL for Celo
`ARBITRUM_RPC_URL`	No*	Override RPC URL for Arbitrum
`ETHEREUM_RPC_URL`	No	Override RPC URL for ENS resolution
`CACHE_TTL_SECONDS`	No	Cache TTL in seconds (default: 15)
`CACHE_MAX_ENTRIES`	No	Max cache entries (default: 1000)
`LOG_LEVEL`	No	debug, info, warn, or error (default: info)
`USE_TESTNETS`	No	Use testnet chains (default: false)

*Provide either ALCHEMY_API_KEY or all five individual chain RPC URLs. **Required when X402_ENABLED=true.

Development

pnpm install

pnpm build pnpm inspect # MCP Inspector UI at localhost:6274 pnpm test # Unit tests pnpm typecheck # Type check pnpm lint # ESLint

License

MIT

Evmcp

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Crypto & blockchaini

Common questions

Alternatives

Agent Data Tools: Prices and DeFi

Agent Data Tools: Chain data

Bellchain

README from the maker

evmcp

How it Works

Quick Start

With Claude Desktop

With Claude Code

Supported Chains

Tools (29 total)

Balance (3)

Block (3)

Transaction (3)

Contract (3)

Token (2)

Gas (3)

ENS (2)

Events (2)

Chain and Health (3)

Batch (1)

Cross-Chain (2)

Registry (1)

Optimizer (1)

Resources (4)

Prompts (4)

Companion Contracts

Avalanche C-Chain (43114)

Celo (42220)

Contract Descriptions

Environment Variables

Development

License