Library

Transaction enrichment library for Cloudflare Workers

Use TxnKit as a transaction enrichment API from Cloudflare Workers. This page shows the safe request shape, a short code snippet, and the boundary for keeping sensitive data out of the integration.

Ask about a 100-descriptor cleanup audit Inspect the API

Target intent

Cloudflare Workers routes that proxy safe descriptor enrichment with server-side secrets.

TxnKit does not require a crawler, queue, or live logo provider inside the Worker.

Raw descriptor

PAYPAL *SPOTIFY

Short Cloudflare Workers API snippet

export default {
  async fetch(request, env) {
    const body = await request.json();
    return fetch("https://api.txnkit.dev/v1/enrich", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${env.TXNKIT_API_KEY}`,
        "Content-Type": "application/json"
      },
      body: JSON.stringify({ raw_description: body.raw_description, country: "CA" })
    });
  }
};

Keep API keys out of browser bundles. For frontend stacks, call a backend route or serverless function that owns the TxnKit request.

API-shaped output

{
  "normalized_merchant": "spotify",
  "display_name": "Spotify",
  "category": "digital_services",
  "subcategory": "music_streaming",
  "website": "https://www.spotify.com",
  "logos": {
    "preferred": {
      "url": "https://cdn.txnkit.dev/logos/curated-seed-20260524/pilot-001/logos/spotify/icon_64-64x64.png",
      "format": "png",
      "width": 64,
      "height": 64,
      "background": "brand",
      "theme": "any",
      "shape": "square",
      "purpose": "transaction_feed_icon",
      "source": "curated",
      "confidence": 0.96
    },
    "variants": [
      {
        "url": "https://cdn.txnkit.dev/logos/curated-seed-20260524/pilot-001/logos/spotify/icon_32-32x32.png",
        "format": "png",
        "width": 32,
        "height": 32,
        "background": "brand",
        "theme": "any",
        "shape": "square",
        "purpose": "transaction_feed_icon",
        "source": "curated",
        "confidence": 0.96
      },
      {
        "url": "https://cdn.txnkit.dev/logos/curated-seed-20260524/pilot-001/logos/spotify/icon_48-48x48.png",
        "format": "png",
        "width": 48,
        "height": 48,
        "background": "brand",
        "theme": "any",
        "shape": "square",
        "purpose": "transaction_feed_icon",
        "source": "curated",
        "confidence": 0.96
      },
      {
        "url": "https://cdn.txnkit.dev/logos/curated-seed-20260524/pilot-001/logos/spotify/icon_64-64x64.png",
        "format": "png",
        "width": 64,
        "height": 64,
        "background": "brand",
        "theme": "any",
        "shape": "square",
        "purpose": "transaction_feed_icon",
        "source": "curated",
        "confidence": 0.96
      },
      {
        "url": "https://cdn.txnkit.dev/logos/curated-seed-20260524/pilot-001/logos/spotify/profile_icon_128-128x128.png",
        "format": "png",
        "width": 128,
        "height": 128,
        "background": "brand",
        "theme": "any",
        "shape": "square",
        "purpose": "merchant_profile_icon",
        "source": "curated",
        "confidence": 0.96
      },
      {
        "url": "https://cdn.txnkit.dev/logos/curated-seed-20260524/pilot-001/logos/spotify/profile_icon_256-256x256.png",
        "format": "png",
        "width": 256,
        "height": 256,
        "background": "brand",
        "theme": "any",
        "shape": "square",
        "purpose": "merchant_profile_icon",
        "source": "curated",
        "confidence": 0.96
      }
    ],
    "warnings": []
  },
  "confidence": 0.94,
  "recurring_hint": false,
  "processor_hint": "paypal",
  "location_hint": null,
  "signals": [
    "applied_processor_paypal_star",
    "reviewed_merchant_match"
  ],
  "warnings": []
}

Low-confidence results should keep fallback labels and warnings visible instead of forcing a guessed logo or website.

When to use

You are building in Cloudflare Workers and need one-descriptor merchant cleanup through an HTTP API.
Your app can keep the TxnKit API key on the server side or inside a trusted serverless function.
You need merchant display names, categories, confidence, signals, warnings, and logo-ready metadata.

When not to use

TxnKit does not require a crawler, queue, or live logo provider inside the Worker.
Do not use TxnKit to process card numbers, account numbers, full statements, bank credentials, emails, phone numbers, addresses, customer names, or customer PII.
Do not use TxnKit when the product requirement is guaranteed merchant identity, every-merchant resolution, or contracted uptime terms.

Proof surfaces

The public contract is POST /v1/enrich, backed by the OpenAPI file, benchmark examples, privacy rules, and deterministic request-path tests.

OpenAPI · Benchmark · Security · Pricing