How to connect Alchemy to Claude Cowork

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Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your Alchemy account to Cowork via Composio Connect, enabling it to show all NFTs owned by this wallet, get recent sales for a specific NFT collection, check ERC20 token balances for your address, and more such actions on your behalf without compromising your account security.

Also integrate Alchemy with

Connecting Alchemy to Claude Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Cowork

4. Connect your Alchemy account

Back in Cowork, ask the agent to connect to Alchemy or give it any Alchemy-related task.

For example, ask Cowork to:

  • "Show all NFTs owned by this wallet"
  • "Get recent sales for a specific NFT collection"
  • "Check ERC20 token balances for your address"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Alchemy account is ready to use.

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like Alchemy through MCP without you sharing account credentials directly with the agent.

What is the Alchemy MCP server, and what's possible with it?

The Alchemy MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Alchemy account. It provides structured and secure access to your blockchain data, so your agent can perform actions like fetching NFT metadata, tracking token balances, analyzing transaction history, and managing Ethereum assets on your behalf.

  • Retrieve NFT contract and token metadata: Instantly access detailed information about any NFT collection or token, including name, symbol, supply, and contract deployer.
  • Analyze NFT sales and ownership: Let your agent fetch historical NFT sales across marketplaces and list current owners for any ERC-721 or ERC-1155 token.
  • Track token balances and portfolio: Effortlessly check ERC-20 token balances for any Ethereum address to monitor holdings or build portfolio analytics.
  • List NFTs within a collection: Pull a complete list of NFTs under a specific contract to explore, display, or analyze full collections.
  • Monitor transaction counts and activity: Quickly get the transaction count (nonce) for any Ethereum address to understand activity or prepare for new transactions.

Supported Tools & Triggers

Tools
Compute NFT RarityTool to compute the rarity of each attribute for a specific NFT based on its collection.
Get NFT Collection MetadataTool to get metadata for an NFT collection using its marketplace slug (OpenSea, LooksRare, etc).
Get Collections for OwnerTool to retrieve all NFT collections held by a specified owner address.
Get Contract Metadata Batch V3Tool to retrieve metadata for multiple NFT contracts in a single batch request.
Get Contract Metadata V3Tool to get the metadata for an NFT contract including name, symbol, total supply, and token type (ERC721/ERC1155).
Get Contracts for Owner (NFT API v3)Tool to get all NFT contracts owned by an address with contract metadata.
Get NFT Floor PriceTool to get the floor price for an NFT collection across multiple marketplaces (OpenSea, LooksRare, etc).
Get Historical Token PricesRetrieves historical price data for a token over a specified time range with configurable intervals.
Get NFT Contracts By AddressTool to retrieve NFT contracts associated with one or more wallet addresses across multiple blockchain networks.
Get NFT MetadataTool to retrieve comprehensive metadata for a specific NFT, including contract details, media URLs, attributes, ownership info, and OpenSea data.
Get NFT Metadata BatchTool to retrieve metadata for multiple NFTs in a single request (up to 100 NFTs), including contract details, media URLs, attributes, and collection data.
Get NFT Sales V3Retrieves NFT sales that have occurred through on-chain marketplaces using Alchemy's v3 API.
Get NFTs for Collection V3Retrieves all NFTs in a collection using OpenSea collection slug or contract address.
Get NFTs for ContractRetrieves all NFTs for a given NFT contract address.
Get NFTs for OwnerTool to get all NFTs currently owned by a given address.
Get Owners for CollectionTool to retrieve all owner addresses for a given NFT collection contract.
Get Owners for ContractTool to get all owners of NFTs in a contract with optional token balances.
Get NFT Owners (v3)Tool to retrieve all owners for a specific NFT using Alchemy's v3 API.
Get Portfolio NFTs By AddressTool to fetch NFTs owned by multiple wallet addresses across different blockchain networks.
Get Token Prices By SymbolTool to get current token prices by symbol (e.
Get Token BalancesThis tool retrieves ERC20 token balances for a specified Ethereum address.
Get Token Balances By AddressTool to get token balances for wallet addresses across multiple networks using Alchemy's Portfolio API.
Get Token MetadataRetrieves metadata for an ERC-20 token on Ethereum mainnet, including its name, symbol, decimals, and logo URL.
Get Token Prices By AddressRetrieves current token prices by contract address and network from decentralized exchanges (DEXes).
Get Tokens By AddressTool to fetch fungible tokens (native, ERC-20, SPL) for multiple wallet addresses across networks.
Get Transaction CountThis tool retrieves the number of transactions sent from a specific address (also known as the nonce).
Get Transactions History By AddressTool to get transaction history for wallet addresses across multiple networks using Alchemy's Data API.
Invalidate NFT Contract CacheTool to invalidate the cached metadata for an NFT contract.
Check If NFT Is AirdropTool to check if a specific NFT token is marked as an airdrop.
Check If NFT Is AirdropTool to determine whether an NFT was airdropped to the owner address.
Check Collection OwnershipTool to check if a wallet address owns any token from a specific NFT collection.
Check NFT Holder StatusTool to check if a wallet address holds any NFTs from a specific contract.
Check if Contract is SpamTool to check if an NFT contract is marked as spam by Alchemy.
Check if Contract is Spam (V3)Tool to determine if a specific NFT contract is marked as spam by Alchemy.
Search NFT Contract MetadataTool to search for keywords across metadata of all ERC-721 and ERC-1155 smart contracts.
Summarize NFT AttributesRetrieves a comprehensive summary of all attributes and traits for NFTs in a collection, including trait counts and distribution statistics.

How to build Alchemy MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Alchemy MCP?

With a standalone Alchemy MCP server, the agents and LLMs can only access a fixed set of Alchemy tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Alchemy and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Claude Cowork?

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Alchemy tools.

Can I manage the permissions and scopes for Alchemy while using Tool Router?

Yes, absolutely. You can configure which Alchemy scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Alchemy data and credentials are handled as safely as possible.

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