Alchemy Eth

live CryptoDeveloper

Alchemy — query Ethereum and L2 chains for ERC-20 token balances/metadata, NFT ownership, asset transfer history, and raw JSON-RPC calls.

9 tools
0ms auth
free tier 50 calls/day
🔑 Authentication

BYO key only — Pipeworx does not front an Alchemy key. Free key at dashboard.alchemy.com. Pass _apiKey on the gateway URL.

Config with credentials 
{
  "mcpServers": {
    "pipeworx-alchemy-eth": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://gateway.pipeworx.io/alchemy-eth/mcp?_apiKey=your_alchemy_key"
      ]
    }
  }
}

Get an API key →

Tools

eth_call

Generic JSON-RPC call.

No parameters required.

▶ Try it
token_balances

ERC-20 balances.

No parameters required.

▶ Try it
token_metadata

ERC-20 metadata.

No parameters required.

▶ Try it
token_allowance

ERC-20 allowance.

No parameters required.

▶ Try it
nfts_owned

NFTs owned by address.

No parameters required.

▶ Try it
nft_metadata

Single NFT metadata.

No parameters required.

▶ Try it
nfts_for_collection

NFTs in a collection.

No parameters required.

▶ Try it
nft_owners

Owners of a contract/token.

No parameters required.

▶ Try it
asset_transfers

Enhanced transfer feed.

No parameters required.

▶ Try it

Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/alchemy-eth/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/alchemy-eth/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"eth_call","arguments":{}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript 
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("eth_call", {});
ask_pipeworx 
// Or ask in plain English:
const answer = await px.ask("alchemy — query ethereum and l2 chains for erc-20 token balances/metadata, nft ownership, asset transfer history, and raw json-rpc calls");