Request
curl -X POST https://api.iterationlayer.com/document-extraction/v1/extract \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"files": [
{
"type": "url",
"name": "receipt.pdf",
"url": "https://example.com/receipts/purchase-receipt.pdf"
}
],
"schema": {
"fields": [
{
"name": "merchant_name",
"type": "TEXT",
"description": "Name of the merchant or store"
},
{
"name": "date",
"type": "DATE",
"description": "Date of the transaction"
},
{
"name": "items",
"type": "ARRAY",
"description": "Individual line items on the receipt",
"fields": [
{
"name": "name",
"type": "TEXT",
"description": "Item name or description"
},
{
"name": "amount",
"type": "CURRENCY_AMOUNT",
"description": "Item price"
}
]
},
{
"name": "total_amount",
"type": "CURRENCY_AMOUNT",
"description": "Total amount charged"
},
{
"name": "currency",
"type": "CURRENCY_CODE",
"description": "Currency code (e.g. EUR, GBP)"
}
]
}
}'Response
{
"success": true,
"data": {
"merchant_name": {
"value": "Whole Foods Market",
"confidence": 0.98,
"citations": ["WHOLE FOODS MARKET"]
},
"date": {
"value": "2026-02-18",
"confidence": 0.97,
"citations": ["02/18/2026"]
},
"items": {
"value": [
{
"name": {
"value": "Organic Avocados (3pk)",
"confidence": 0.95,
"citations": ["Organic Avocados 3pk"]
},
"amount": {
"value": {
"amount": "5.99",
"currency": "EUR"
},
"confidence": 0.97,
"citations": ["EUR 5.99"]
}
},
{
"name": {
"value": "Sourdough Bread",
"confidence": 0.96,
"citations": ["Sourdough Bread"]
},
"amount": {
"value": {
"amount": "4.49",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 4.49"]
}
}
],
"confidence": 0.96,
"citations": []
},
"total_amount": {
"value": {
"amount": "10.48",
"currency": "EUR"
},
"confidence": 0.99,
"citations": ["TOTAL: EUR 10.48"]
},
"currency": {
"value": "EUR",
"confidence": 0.99,
"citations": ["$"]
}
}
}Request
import { IterationLayer } from "iterationlayer";
const client = new IterationLayer({ apiKey: "YOUR_API_KEY" });
const result = await client.extractDocument({
files: [
{
type: "url",
name: "receipt.pdf",
url: "https://example.com/receipts/purchase-receipt.pdf",
},
],
schema: {
fields: [
{
name: "merchant_name",
type: "TEXT",
description: "Name of the merchant or store",
},
{
name: "date",
type: "DATE",
description: "Date of the transaction",
},
{
name: "items",
type: "ARRAY",
description: "Individual line items on the receipt",
fields: [
{
name: "name",
type: "TEXT",
description: "Item name or description",
},
{
name: "amount",
type: "CURRENCY_AMOUNT",
description: "Item price",
},
],
},
{
name: "total_amount",
type: "CURRENCY_AMOUNT",
description: "Total amount charged",
},
{
name: "currency",
type: "CURRENCY_CODE",
description: "Currency code (e.g. EUR, GBP)",
},
],
},
});Response
{
"success": true,
"data": {
"merchant_name": {
"value": "Whole Foods Market",
"confidence": 0.98,
"citations": ["WHOLE FOODS MARKET"]
},
"date": {
"value": "2026-02-18",
"confidence": 0.97,
"citations": ["02/18/2026"]
},
"items": {
"value": [
{
"name": {
"value": "Organic Avocados (3pk)",
"confidence": 0.95,
"citations": ["Organic Avocados 3pk"]
},
"amount": {
"value": {
"amount": "5.99",
"currency": "EUR"
},
"confidence": 0.97,
"citations": ["EUR 5.99"]
}
},
{
"name": {
"value": "Sourdough Bread",
"confidence": 0.96,
"citations": ["Sourdough Bread"]
},
"amount": {
"value": {
"amount": "4.49",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 4.49"]
}
}
],
"confidence": 0.96,
"citations": []
},
"total_amount": {
"value": {
"amount": "10.48",
"currency": "EUR"
},
"confidence": 0.99,
"citations": ["TOTAL: EUR 10.48"]
},
"currency": {
"value": "EUR",
"confidence": 0.99,
"citations": ["$"]
}
}
}Request
from iterationlayer import IterationLayer
client = IterationLayer(api_key="YOUR_API_KEY")
result = client.extract_document(
files=[
{
"type": "url",
"name": "receipt.pdf",
"url": "https://example.com/receipts/purchase-receipt.pdf",
}
],
schema={
"fields": [
{
"name": "merchant_name",
"type": "TEXT",
"description": "Name of the merchant or store",
},
{
"name": "date",
"type": "DATE",
"description": "Date of the transaction",
},
{
"name": "items",
"type": "ARRAY",
"description": "Individual line items on the receipt",
"fields": [
{
"name": "name",
"type": "TEXT",
"description": "Item name or description",
},
{
"name": "amount",
"type": "CURRENCY_AMOUNT",
"description": "Item price",
},
],
},
{
"name": "total_amount",
"type": "CURRENCY_AMOUNT",
"description": "Total amount charged",
},
{
"name": "currency",
"type": "CURRENCY_CODE",
"description": "Currency code (e.g. EUR, GBP)",
},
]
},
)Response
{
"success": true,
"data": {
"merchant_name": {
"value": "Whole Foods Market",
"confidence": 0.98,
"citations": ["WHOLE FOODS MARKET"]
},
"date": {
"value": "2026-02-18",
"confidence": 0.97,
"citations": ["02/18/2026"]
},
"items": {
"value": [
{
"name": {
"value": "Organic Avocados (3pk)",
"confidence": 0.95,
"citations": ["Organic Avocados 3pk"]
},
"amount": {
"value": {
"amount": "5.99",
"currency": "EUR"
},
"confidence": 0.97,
"citations": ["EUR 5.99"]
}
},
{
"name": {
"value": "Sourdough Bread",
"confidence": 0.96,
"citations": ["Sourdough Bread"]
},
"amount": {
"value": {
"amount": "4.49",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 4.49"]
}
}
],
"confidence": 0.96,
"citations": []
},
"total_amount": {
"value": {
"amount": "10.48",
"currency": "EUR"
},
"confidence": 0.99,
"citations": ["TOTAL: EUR 10.48"]
},
"currency": {
"value": "EUR",
"confidence": 0.99,
"citations": ["$"]
}
}
}Request
package main
import il "github.com/iterationlayer/sdk-go"
func main() {
client := il.NewClient("YOUR_API_KEY")
result, err := client.ExtractDocument(il.ExtractDocumentRequest{
Files: []il.FileInput{
il.FileInput{
Type: "url",
Name: "receipt.pdf",
Url: "https://example.com/receipts/purchase-receipt.pdf",
},
},
Schema: il.ExtractionSchema{
Fields: []any{
il.TextFieldConfig{
Name: "merchant_name",
Type: "TEXT",
Description: "Name of the merchant or store",
},
il.DateFieldConfig{
Name: "date",
Type: "DATE",
Description: "Date of the transaction",
},
il.ArrayFieldConfig{
Name: "items",
Type: "ARRAY",
Description: "Individual line items on the receipt",
Fields: []any{
il.TextFieldConfig{
Name: "name",
Type: "TEXT",
Description: "Item name or description",
},
il.CurrencyAmountFieldConfig{
Name: "amount",
Type: "CURRENCY_AMOUNT",
Description: "Item price",
},
},
},
il.CurrencyAmountFieldConfig{
Name: "total_amount",
Type: "CURRENCY_AMOUNT",
Description: "Total amount charged",
},
il.CurrencyCodeFieldConfig{
Name: "currency",
Type: "CURRENCY_CODE",
Description: "Currency code (e.g. EUR, GBP)",
},
},
},
})
if err != nil {
panic(err)
}
_ = result
}Response
{
"success": true,
"data": {
"merchant_name": {
"value": "Whole Foods Market",
"confidence": 0.98,
"citations": ["WHOLE FOODS MARKET"]
},
"date": {
"value": "2026-02-18",
"confidence": 0.97,
"citations": ["02/18/2026"]
},
"items": {
"value": [
{
"name": {
"value": "Organic Avocados (3pk)",
"confidence": 0.95,
"citations": ["Organic Avocados 3pk"]
},
"amount": {
"value": {
"amount": "5.99",
"currency": "EUR"
},
"confidence": 0.97,
"citations": ["EUR 5.99"]
}
},
{
"name": {
"value": "Sourdough Bread",
"confidence": 0.96,
"citations": ["Sourdough Bread"]
},
"amount": {
"value": {
"amount": "4.49",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 4.49"]
}
}
],
"confidence": 0.96,
"citations": []
},
"total_amount": {
"value": {
"amount": "10.48",
"currency": "EUR"
},
"confidence": 0.99,
"citations": ["TOTAL: EUR 10.48"]
},
"currency": {
"value": "EUR",
"confidence": 0.99,
"citations": ["$"]
}
}
}Template
{
"name": "Extract Receipt Data",
"nodes": [
{
"parameters": {
"content": "## Extract Receipt Data\n\nFinance teams and expense management apps use this recipe to automate receipt processing. Upload a receipt photo or PDF and receive structured JSON with merchant name, date, individual items, and total \u2014 ready for an expense report or reimbursement workflow.\n\n**Note:** This workflow uses the Iteration Layer community node (`n8n-nodes-iterationlayer`). Install it via Settings > Community Nodes on self-hosted n8n, or add it directly on n8n Cloud with Verified Community Nodes enabled.",
"height": 280,
"width": 500,
"color": 2
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
200,
40
],
"id": "4bdb62b6-66d8-4616-a7e1-6e8f48477da7",
"name": "Overview"
},
{
"parameters": {
"content": "### Step 1: Extract Data\nResource: **Document Extraction**\n\nConfigure the Document Extraction parameters below, then connect your credentials.",
"height": 160,
"width": 300,
"color": 6
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
475,
100
],
"id": "0c6511af-1417-4e1f-9fbb-73f019a130c3",
"name": "Step 1 Note"
},
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
250,
300
],
"id": "c1d2e3f4-a5b6-7890-cdef-901234567cde",
"name": "Manual Trigger"
},
{
"parameters": {
"resource": "documentExtraction",
"schemaInputMode": "rawJson",
"schemaJson": "{\"fields\":[{\"name\":\"merchant_name\",\"type\":\"TEXT\",\"description\":\"Name of the merchant or store\"},{\"name\":\"date\",\"type\":\"DATE\",\"description\":\"Date of the transaction\"},{\"name\":\"items\",\"type\":\"ARRAY\",\"description\":\"Individual line items on the receipt\",\"fields\":[{\"name\":\"name\",\"type\":\"TEXT\",\"description\":\"Item name or description\"},{\"name\":\"amount\",\"type\":\"CURRENCY_AMOUNT\",\"description\":\"Item price\"}]},{\"name\":\"total_amount\",\"type\":\"CURRENCY_AMOUNT\",\"description\":\"Total amount charged\"},{\"name\":\"currency\",\"type\":\"CURRENCY_CODE\",\"description\":\"Currency code (e.g. EUR, GBP)\"}]}",
"files": {
"fileValues": [
{
"fileInputMode": "url",
"fileName": "receipt.pdf",
"fileUrl": "https://example.com/receipts/purchase-receipt.pdf"
}
]
}
},
"type": "n8n-nodes-iterationlayer.iterationLayer",
"typeVersion": 1,
"position": [
500,
300
],
"id": "d2e3f4a5-b6c7-8901-defa-012345678def",
"name": "Extract Data",
"credentials": {
"iterationLayerApi": {
"id": "1",
"name": "Iteration Layer API"
}
}
}
],
"connections": {
"Manual Trigger": {
"main": [
[
{
"node": "Extract Data",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
}
}Prompt
Extract receipt data from the file at [file URL]. Use the extract_document tool with these fields:
- merchant_name (TEXT): Name of the merchant or store
- date (DATE): Date of the transaction
- items (ARRAY): Each with name (TEXT) and amount (CURRENCY_AMOUNT)
- total_amount (CURRENCY_AMOUNT): Total amount charged
- currency (CURRENCY_CODE): Currency code