VERIFIED

Web3

Safety: 65/100

0.0(0)

Web3 MCP provides access to Ankr's Advanced API, enabling LLMs to interact with blockchain data across multiple chains for querying and NFT/token information.

MCP ServersDevelopmentData & DatabasesSearch & WebAI & LLMFinance & CryptoProductivityUtilitiesCloud & InfrastructureFreemium

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Overview

Web3 MCP provides access to Ankr's Advanced API, enabling LLMs to interact with blockchain data across multiple chains for querying and NFT/token information.

Web3 MCP is relatively safe for read-only operations, providing access to blockchain data through Ankr's API. However, the presence of a private key for authenticated requests introduces risk if the key has write permissions or is compromised. Proper configuration and monitoring are essential to mitigate potential risks.

Performance is primarily dependent on the Ankr API's response times and network latency. Consider caching frequently accessed data to improve responsiveness.

Cost is determined by Ankr's API pricing model, which may be based on usage volume or specific API calls. Monitor API usage to avoid unexpected costs.

Python3 starsMITCI/CD

Connections & Capabilities

Connects To

GitHub

Capabilities

ReadWrite

Client Compatibility

Claude Desktop

full

Cursor

untested

Windsurf

untested

VS Code (Copilot)

untested

Quickstart

Claude Desktop Config

{
  "mcpServers": {
    "web3": {
      "command": "uvx",
      "args": [
        "web3-mcp"
      ],
      "env": {
        "ANKR_ENDPOINT": "https://rpc.ankr.com/...",
      }
    }
  }
}

Environment Variables

ANKR_ENDPOINTANKR_PRIVATE_KEY

Tools (4)

safe

get_nfts_by_owner

Retrieves NFTs owned by a specified wallet address.

Read-only operation; retrieves data without modifying blockchain state.

safe

get_account_balance

Fetches the token balances for a given wallet address.

Read-only operation; retrieves data without modifying blockchain state.

safe

get_transactions_by_hash

Retrieves transaction details based on its hash.

Read-only operation; retrieves data without modifying blockchain state.

safe

get_nft_metadata

Retrieves metadata for a specific NFT.

Read-only operation; retrieves data without modifying blockchain state.

Security

Auth Method

Environment Variable

Known Risks

!Compromised ANKR_PRIVATE_KEY could lead to unauthorized actions on the blockchain.
!Reliance on Ankr's API introduces a single point of failure and potential data integrity issues.
!Rate limiting by Ankr's API could impact performance and availability.
!Potential for injection attacks if input validation is insufficient.
!Exposure of ANKR_ENDPOINT could lead to unauthorized access to blockchain data.

Safety Score

moderate risk

Positive

+Read-only access to blockchain data by default
+Utilizes Ankr's API, abstracting direct blockchain interaction
+Environment variable configuration for sensitive information
+Well-defined API categories limit scope of potential misuse

Risks

-ANKR_PRIVATE_KEY allows authenticated requests, potentially enabling write operations if the key has such permissions.
-Reliance on external Ankr API introduces a dependency and potential point of failure.
-Improperly secured ANKR_ENDPOINT could expose data to unauthorized access.
-Potential for rate limiting or API abuse if not properly managed.

Use Cases

NFT Analysis

-Identify NFT collections owned by a specific wallet.
-Retrieve metadata for specific NFTs to understand their properties.
-Analyze NFT transfer history to track ownership changes.

Token Portfolio Tracking

-Monitor token balances for a wallet across multiple chains.
-Track token prices to assess portfolio value.
-Analyze token transfer history to identify inflows and outflows.

Blockchain Data Querying

-Retrieve blockchain statistics to understand network activity.
-Query specific blocks to examine their contents.
-Get transaction details by hash or address for auditing purposes.

Who Is This For?

Best For

LLM applications requiring access to blockchain data
NFT and token portfolio tracking tools
Blockchain data analysis and research
Applications needing cross-chain data access

Not Ideal For

Applications requiring real-time, low-latency blockchain data
High-volume, mission-critical applications without robust error handling and monitoring
Applications needing direct blockchain interaction without API abstraction

Autonomy & Execution

Default ModeConfigurable

Sandboxed

Autonomy is limited by the permissions associated with the ANKR_PRIVATE_KEY. If no key is provided, it defaults to read-only. Ensure appropriate key management for desired autonomy level.

StatelessYes

Retry LogicNot documented

ConcurrencyNot documented

Production Tip

Monitor API usage and error rates to proactively identify and address potential issues with the Ankr API or the `web3-mcp` server.

FAQ

What blockchain networks are supported?

Ethereum, BSC, Polygon, Avalanche, and more. Refer to Ankr's Advanced API documentation for a complete list.

Is a private key required?

No, it's optional. However, it's recommended for authenticated requests that may require write access.

How do I handle API rate limiting?

Implement retry logic with exponential backoff and monitor API usage to stay within rate limits.

What security measures should I take?

Securely store the ANKR_PRIVATE_KEY and ANKR_ENDPOINT, and implement proper input validation to prevent injection attacks.

How do I monitor the server's performance?

Implement logging and monitoring to track API usage, error rates, and response times.

Can I use this for free?

Ankr's Advanced API may have a free tier, but check their pricing for current details.

What kind of data can I get?

NFT metadata, token balances, transaction history, blockchain statistics, and more. See the API Categories in the README.

Key Features

Development Data & Databases Search & Web AI & LLM Finance & Crypto Productivity Utilities Cloud & Infrastructure

Metrics

Discovered2/14/2026

Reviews0

Saved By0 users

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