@taxformatter/sdk

Official Node.js SDK for the TaxFormatter API — parse crypto exchange CSVs and bank statement PDFs programmatically.

Install

npm install @taxformatter/sdk

Quick Start

import { TaxFormatter } from '@taxformatter/sdk';

const tf = new TaxFormatter('tf_live_xxx');

// Parse a file by path
const result = await tf.parse('./coinbase_2025.csv');

// Parse a buffer with options
const result = await tf.parse(buffer, 'coinbase.csv', {
  outputFormat: 'turbotax',
});

// List supported sources
const sources = await tf.listSources();

// Check usage
const usage = await tf.getUsage();

Configuration

const tf = new TaxFormatter('tf_live_xxx', {
  baseUrl: 'https://api.taxformatter.com', // default
  timeout: 30_000,  // 30s default
  maxRetries: 3,    // auto-retry on 429
});

Error Handling

import { TaxFormatter, AuthenticationError, RateLimitError, ParseError } from '@taxformatter/sdk';

try {
  await tf.parse('./file.csv');
} catch (err) {
  if (err instanceof AuthenticationError) {
    // 401 — invalid or missing API key
  } else if (err instanceof RateLimitError) {
    // 429 — rate limited (auto-retried 3 times before throwing)
    console.log(err.retryAfterSeconds);
  } else if (err instanceof ParseError) {
    // 422 — file could not be parsed
    console.log(err.suggestion);
  }
}

API

tf.parse(input, filename?, options?)

Parse a crypto CSV or bank statement PDF.

• input: File path (string) or Buffer
• filename: Required when passing a Buffer
• options.exchange: Force exchange detection
• options.bank: Force bank detection
• options.outputFormat: 'koinly' | 'turbotax' | 'coinledger' | 'zenledger'

tf.listSources()

List all supported crypto exchanges and banks.

tf.getUsage()

Get current month's API usage.

tf.health()

Check API health status.

License

MIT