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@secondlayer/stacks

v6.0.0

Published

Typed Stacks client for TypeScript: read contracts, decode Clarity, build and send transactions.

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Links

Git

Maintainers

ryanwaitsryanwaits

Keywords

Readme

@secondlayer/stacks

A viem-style SDK for the Stacks blockchain. One package, zero polyfills, full tree-shaking.

Docs: stacks.secondlayer.tools

Install

bun add @secondlayer/stacks

Quick Start

import { createPublicClient, http } from "@secondlayer/stacks";
import { mainnet } from "@secondlayer/stacks/chains";

const client = createPublicClient({
  chain: mainnet,
  transport: http(),
});

const balance = await client.getBalance({
  address: "SP2J6ZY48GV1EZ5V2V5RB9MP66SW86PYKKNRV9EJ7",
});

Exports

| Module | Description | |---|---| | @secondlayer/stacks | Clients, transports, re-exports | | @secondlayer/stacks/accounts | privateKeyToAccount, mnemonicToAccount, wallet providers | | @secondlayer/stacks/chains | mainnet, testnet, devnet, defineChain | | @secondlayer/stacks/clarity | Cl.* constructors, serialization, ABI type system | | @secondlayer/stacks/actions | readContract, callContract, transferStx, getContract, multicall | | @secondlayer/stacks/transactions | Build, sign, serialize transactions, multi-sig | | @secondlayer/stacks/postconditions | Pc fluent builder for post-conditions | | @secondlayer/stacks/utils | Encoding, hashing, addresses, unit formatting | | @secondlayer/stacks/bitcoin | Trust-minimized Bitcoin SPV — proof construction, Clarity codecs, verifier (SIP-044) | | @secondlayer/stacks/pox5 | PoX-5 Bitcoin Staking (SIP-045) — bonds, staking, lockup scripts, signer grants | | @secondlayer/stacks/sbtc | sbtc() client extension: sBTC deposits, balances, withdrawals | | @secondlayer/stacks/filters | Event and transaction filter builders, re-exported from the root | | @secondlayer/stacks/simnet | Clarinet simnet transport — same getContract client against an in-process VM |

Frozen modules

These ship and work but get no further investment — they may be removed in a future major. Prefer Hiro's maintained @stacks/* ecosystem for wallet-side work; Secondlayer is a data-infrastructure company, not a wallet SDK vendor.

Nonce coordination is the exception — it is supported and maintained: it's mempool-aware (built on Secondlayer's data plane) and solves a real multi-broadcast gap, which is why it lives here rather than being deferred to @stacks/*.

| Module | Description | |---|---| | @secondlayer/stacks/connect | Wallet connection — browser extensions + setProvider | | @secondlayer/stacks/connect/walletconnect | WalletConnect v2 — native relay, QR, modal | | @secondlayer/stacks/subscriptions | WebSocket watch helpers (watchBlocks, watchMempool, watchTransaction) — not a Webhooks product alias | | @secondlayer/stacks/bns | BNS name registration, resolution, zonefiles | | @secondlayer/stacks/pox | PoX stacking — solo and delegated | | @secondlayer/stacks/stackingdao | StackingDAO liquid staking (STX/stSTX) |

Agent Stacks reads go through @secondlayer/mcp.

Guides