Token Operations

Send, receive, list, deploy, and manage BSV21 fungible tokens using @1sat/actions.

Actions Overview

Action	Description
listTokens	List all BSV21 token UTXOs in the wallet
getBsv21Balances	Aggregated balances grouped by token ID
sendBsv21	Send tokens to a counterparty, address, or paymail
purchaseBsv21	Purchase tokens from a marketplace listing

Check Token Balances

import { getBsv21Balances, createContext } from '@1sat/actions'

const ctx = createContext(wallet, { services })

const balances = await getBsv21Balances.execute(ctx, {})

for (const token of balances) {
  const displayAmt = Number(BigInt(token.amt)) / (10 ** token.dec)
  console.log(`${token.sym ?? token.id}: ${displayAmt}`)
}

Balance Response

interface Bsv21Balance {
  p: string       // Protocol: 'bsv-20'
  id: string      // Token ID (txid_vout)
  sym?: string    // Symbol (e.g., 'MYTOK')
  icon?: string   // Icon URL/outpoint
  dec: number     // Decimal places
  amt: string     // Total amount (raw, as string)
  all: { confirmed: bigint; pending: bigint }
  listed: { confirmed: bigint; pending: bigint }
}

List Token UTXOs

import { listTokens, createContext } from '@1sat/actions'

const ctx = createContext(wallet)

const outputs = await listTokens.execute(ctx, { limit: 100 })
// Returns WalletOutput[] with tags like 'id:{tokenId}', 'amt:{amount}', 'dec:{decimals}'

Send Tokens

import { sendBsv21, createContext } from '@1sat/actions'

const ctx = createContext(wallet, { services })

// Send by counterparty public key (preferred - wallet can derive keys)
const result = await sendBsv21.execute(ctx, {
  tokenId: 'abc123...def456_0',  // Token ID (deploy txid_vout)
  amount: '1000000',              // Raw amount as string (respects decimals)
  counterparty: '02abc...',       // Recipient's identity public key
})

// Send by address (external - not tracked in recipient's wallet)
const result = await sendBsv21.execute(ctx, {
  tokenId: 'abc123...def456_0',
  amount: '500000',
  address: '1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa',
})

if (result.txid) {
  console.log('Sent! txid:', result.txid)
} else {
  console.error('Error:', result.error)
}

How Token Sending Works

1. Wallet lists all token UTXOs for the specified tokenId
2. UTXOs are validated against the overlay service (confirms they're unspent and valid)
3. Sufficient UTXOs are selected to cover the requested amount
4. A BSV21 transfer inscription is created on the recipient's output
5. If there's change, a second token output returns the remainder to the sender
6. An overlay processing fee is paid to the token's fund address
7. Transaction is signed, broadcast, and submitted to the overlay for indexing

Important: Token Amounts

Token amounts are in raw units (like satoshis for BSV). If a token has 8 decimals:

• '100000000' = 1.0 tokens
• '50000000' = 0.5 tokens
• '1' = 0.00000001 tokens

Purchase Tokens from Marketplace

import { purchaseBsv21, createContext } from '@1sat/actions'

const ctx = createContext(wallet, { services })

const result = await purchaseBsv21.execute(ctx, {
  tokenId: 'abc123...def456_0',
  outpoint: 'txid_vout',           // Listed token outpoint
  amount: '1000000',                // Tokens in the listing
  marketplaceAddress: '1Market...', // Optional: marketplace fee address
  marketplaceRate: 0.02,            // Optional: 2% marketplace fee
})

Deploy a New Token

Use @1sat/core for token deployment:

import { deployBsv21Token } from '@1sat/core'

const result = await deployBsv21Token({
  symbol: 'MYTOKEN',
  decimals: 8,
  icon: 'iconTxid_0',              // Outpoint of icon inscription
  utxos: paymentUtxos,
  initialDistribution: {
    address: ownerAddress,
    tokens: 21_000_000,             // Display amount
  },
  destinationAddress: ownerAddress,
  paymentPk: paymentPrivateKey,
  changeAddress: changeAddress,
})

console.log('Deployed token:', result.tx.id('hex'))

Burn Tokens

To burn tokens, use transferOrdTokens from @1sat/core with burn: true:

import { transferOrdTokens, TokenType } from '@1sat/core'

const result = await transferOrdTokens({
  protocol: TokenType.BSV21,
  tokenID: 'abc123...def456_0',
  decimals: 8,
  utxos: paymentUtxos,
  inputTokens: tokenUtxos,
  distributions: [],            // Empty = no recipients
  burn: true,                   // Burns all input tokens
  paymentPk: paymentPrivateKey,
  ordPk: ordPrivateKey,
  changeAddress: changeAddress,
})

Token Selection

When sending tokens, the SDK selects UTXOs automatically. The selection:

• Validates each candidate against the overlay (confirms unspent)
• Picks UTXOs until the total covers the requested amount
• Returns insufficient-tokens error if not enough validated UTXOs

Overlay Integration

BSV21 tokens require overlay validation. The services object handles this:

import { OneSatServices } from '@1sat/wallet'

const services = new OneSatServices('main')

// Token details (symbol, decimals, icon, fee info)
const details = await services.bsv21.getTokenDetails(tokenId)

// Validate outputs exist and are unspent
const valid = await services.bsv21.validateOutputs(tokenId, outpoints, { unspent: true })

// After sending, transactions are automatically submitted to the overlay

Requirements

bun add @1sat/actions @1sat/core @1sat/wallet @bsv/sdk