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0xGval
by 0xGval

Ethereum Tools for Claude MCP

A comprehensive toolkit for Ethereum blockchain analysis directly within Claude AI using Model Context Protocol (MCP).

Features

  • Smart Contract Audit: Analyze contracts for security issues, verify source code, and detect token standards

  • Wallet Analysis: Check ETH balances, token holdings, and transaction history

  • Profitability Tracking: Calculate wallet profit/loss across tokens and trades

  • Blockchain Data: Fetch and analyze on-chain data with simple commands

  • Token Analysis: Get comprehensive token details, price history, and trading patterns

  • Twitter Search: Find tweets by keywords, usernames, dates, or complex search criteria with natural language processing

Related MCP server: Base MCP Server

Installation

Prerequisites

  • Node.js v16+

  • Claude for Desktop

  • Free API keys:

    • Etherscan - For contract verification and analysis

    • Moralis - For wallet profitability and token balances

    • Codex - For token price history and advanced analytics

    • RapidAPI - For Twitter search functionality

    • (Optional) RPC provider like Infura or use free public endpoints

Setup Steps

  1. Clone this repository:

    git clone https://github.com/0xGval/evm-tools-mcp
    cd evm-tools-mcp
  2. Install dependencies:

    npm install
  3. Create your configuration:

    • Copy mcp.json.example to mcp.json

    • Edit mcp.json to include your API keys and correct file paths

    {
      "mcpServers": {
        "ethereum-tools": {
          "command": "node",
          "args": ["YOUR_ABSOLUTE_PATH_TO/main.js"],
          "env": {
            "ETH_RPC_URL": "https://eth.llamarpc.com",
            "MORALIS_API_KEY": "your_moralis_api_key",
            "ETHERSCAN_API_KEY": "your_etherscan_api_key",
            "CODEX_API_KEY": "your_codex_api_key",
            "RAPIDAPI_KEY": "your_rapidapi_key"
          }
        }
      }
    }
  4. Configure Claude for Desktop:

    • On Windows: Create/edit %APPDATA%\Claude\claude_desktop_config.json

    • Copy the contents of your mcp.json file into this configuration

Available Tools

Contract Analysis

  • auditContract(address: "0x..."): Perform security audit on a smart contract

Balance & Tokens

  • getEthBalance(address: "0x..."): Get ETH balance

  • getTransactionCount(address: "0x..."): Get transaction count (nonce)

  • getTokensBalance(address: "0x...", chain: "eth", excludeSpam: true): Get all token balances

Profitability

  • getWalletPnl(address: "0x...", chain: "eth"): Analyze wallet profit/loss

Token Analysis

  • getTokenInfo(address: "0x...", networkId: 1): Get basic token information including name, symbol, and supply

  • getTokenPriceHistory(address: "0x...", networkId: 1, days: 7, resolution: "1D"): Get historical price data

  • analyzeToken(address: "0x...", networkId: 1, days: 30): Perform comprehensive token analysis including volatility and trading patterns

  • searchTwitter(query: "ethereum", section: "top", limit: 5): Intelligent Twitter search with natural language processing

    • Automatically formats natural language queries into proper Twitter syntax

    • Understands user queries like "Find tweets by _gval about hyperliquid"

    • Supports advanced Twitter search operators: from:username, has:links, etc.

    • Optional parameters: min_likes, min_retweets, min_replies, start_date, end_date, language

  • twitterSearchHelp(topic: "general"): Get help with Twitter search syntax

    • Available topics: "general", "user", "date"

    • Provides examples and explanations of Twitter search operators

Utilities

  • add(a: 1, b: 2): Simple utility function example

Troubleshooting

Common issues:

  • Environment variables not found: Make sure your API keys are correctly set in mcp.json

  • Provider errors: Check that your ETH_RPC_URL is valid and accessible

  • Path errors: Ensure you're using full absolute paths with proper escaping in Windows (\\)

  • Codex API issues: Verify your Codex API key is valid and has permission to access token data

  • Twitter search errors: Make sure your RapidAPI key has access to the Twitter154 API

Development

To add new tools:

  1. Create or modify files in the tools/ directory

  2. Register your tools in main.js

  3. Restart Claude for Desktop to see changes

License

This project is licensed under the MIT License.

Acknowledgements

Available Tools

11 tools
addD
ParametersJSON Schema
NameRequiredDescriptionDefault
aYes
bYes

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

analyzeTokenD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes
networkIdNoNetwork ID (1 for Ethereum, 101 for Solana)
daysNoNumber of days to analyze

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

auditContractD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes
chainNoeth

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

getEthBalanceD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

getTokenInfoD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes
networkIdNoNetwork ID (1 for Ethereum, 101 for Solana)

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

getTokenPriceHistoryD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes
networkIdNoNetwork ID (1 for Ethereum, 101 for Solana)
daysNoNumber of days of history
resolutionNoTime resolution (e.g. 1D, 1H, 60)1D

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

getTokensBalanceD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes
chainNoeth
excludeSpamNo

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

getTransactionCountD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

getWalletPnlD
ParametersJSON Schema
NameRequiredDescriptionDefault
addressYes
chainNoeth

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

searchTwitterD
ParametersJSON Schema
NameRequiredDescriptionDefault
queryYes
sectionNolatest
limitNo
min_retweetsNo
min_likesNo
min_repliesNo
start_dateNo
end_dateNo
languageNo

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

twitterSearchHelpD
ParametersJSON Schema
NameRequiredDescriptionDefault
topicNogeneral

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

TDQS

D1.6/5.0
Disambiguation3/5

Most tools have distinct purposes targeting different Ethereum-related functions like balances, token analysis, and contract auditing, but there is some overlap between 'searchTwitter' and 'twitterSearchHelp' which could cause confusion. The lack of descriptions exacerbates potential ambiguity for tools like 'add' which has no clear domain context.

Naming Consistency2/5

Naming is inconsistent with a mix of camelCase ('analyzeToken', 'getEthBalance') and snake_case ('get_token_info' implied but not used), and vague verbs like 'add' without a clear pattern. While some tools follow a 'getX' structure, the overall convention is mixed and lacks predictability.

Tool Count4/5

With 11 tools, the count is reasonable for an Ethereum-focused server, covering areas like wallet management, token analysis, and social media search. It's slightly high but well within typical bounds for such a domain without feeling overly heavy or thin.

Completeness3/5

The tool set covers key Ethereum operations like balance checks, token info, and contract auditing, but has notable gaps such as transaction sending, smart contract interaction beyond auditing, and wallet creation. The inclusion of Twitter search tools feels tangential and incomplete for core blockchain functionality.

Maintenance

ActivityInactive
ResponsivenessSyncing

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