Skill based on Alchemy SDK JS (alchemy-sdk) docs, generated at 2026-02-09.
The Alchemy SDK is a JavaScript SDK for blockchain access: Ethers.js–compatible provider plus Enhanced APIs (token balances, asset transfers, NFT API, WebSockets, transaction simulation, private tx, Portfolio, Notify, Debug). One client instance per network/API key; namespaces: core, nft, ws, transact, notify, portfolio, prices, debug.
Core References
| Topic | Description | Reference |
|---|
| Client | Instantiation, namespaces, AlchemySettings, Network | core-client |
| Core Namespace | JSON-RPC, Enhanced APIs, token balances, asset transfers, findContractDeployer | core-namespace |
Features
NFT
| Topic | Description | Reference |
|---|
| NFT API | Metadata, owners, transfers, iterators, spam, rarity, floor price, pagination | features-nft |
Realtime and Transact
| Topic | Description | Reference |
|---|
| WebSockets | Subscriptions, AlchemySubscription, reconnection and backfill | features-websockets |
| Transact | Simulate asset changes/execution, send tx, private tx (Flashbots), cancel | features-transact |
Portfolio and Notify
| Topic | Description | Reference |
|---|
| Portfolio | Multi-wallet tokens, NFTs, collections, transactions (authToken) | features-portfolio |
| Notify | Webhooks CRUD, address/NFT activity, mined/dropped, GraphQL (authToken) | features-notify |
Debug
| Topic | Description | Reference |
|---|
| Debug | traceCall, traceTransaction, traceBlock, tracers | features-debug |