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iterationlayer/skills42026年6月9日 更新
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extract-ct600-data
Extract structured fields from ct600 documents.
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- SKILL.md14.1 KB
SKILL.md（原文）
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Extract CT600 Data
Tax and finance teams use this recipe to extract CT600 fields from official forms into structured JSON for review, routing, and downstream filing preparation.
APIs Used
Document Extraction (1 credit per page)
Prerequisites
You need an Iteration Layer API key. Get one at platform.iterationlayer.com during the 7-day trial.
For full integration guidance (SDKs, auth, MCP, error handling), see the Iteration Layer Integration Guide.
Implementation
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": "ct600.pdf",
"url": "https://example.com/documents/ct600-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "taxpayer_name",
"type": "TEXT",
"description": "Taxpayer, filer, or recipient name"
},
{
"name": "taxpayer_identifier",
"type": "TEXT",
"description": "Taxpayer identifier"
},
{
"name": "issuer_or_authority",
"type": "TEXT",
"description": "Employer, payer, or tax authority"
},
{
"name": "tax_period",
"type": "TEXT",
"description": "Tax year or filing period"
},
{
"name": "tax_lines",
"type": "ARRAY",
"description": "Reported tax lines",
"fields": [
{
"name": "code",
"type": "TEXT",
"description": "Box, line, or tax code"
},
{
"name": "description",
"type": "TEXT",
"description": "Line description"
},
{
"name": "amount",
"type": "CURRENCY_AMOUNT",
"description": "Reported amount"
}
]
},
{
"name": "taxable_amount",
"type": "CURRENCY_AMOUNT",
"description": "Taxable amount or tax base"
},
{
"name": "tax_due_or_withheld",
"type": "CURRENCY_AMOUNT",
"description": "Tax due, assessed, or withheld"
},
{
"name": "currency",
"type": "CURRENCY_CODE",
"description": "Currency code"
}
]
}
}'
import { IterationLayer } from "iterationlayer";
const client = new IterationLayer({ apiKey: "YOUR_API_KEY" });
const result = await client.extractDocument({
"files": [
{
"type": "url",
"name": "ct600.pdf",
"url": "https://example.com/documents/ct600-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "taxpayer_name",
"type": "TEXT",
"description": "Taxpayer, filer, or recipient name"
},
{
"name": "taxpayer_identifier",
"type": "TEXT",
"description": "Taxpayer identifier"
},
{
"name": "issuer_or_authority",
"type": "TEXT",
"description": "Employer, payer, or tax authority"
},
{
"name": "tax_period",
"type": "TEXT",
"description": "Tax year or filing period"
},
{
"name": "tax_lines",
"type": "ARRAY",
"description": "Reported tax lines",
"fields": [
{
"name": "code",
"type": "TEXT",
"description": "Box, line, or tax code"
},
{
"name": "description",
"type": "TEXT",
"description": "Line description"
},
{
"name": "amount",
"type": "CURRENCY_AMOUNT",
"description": "Reported amount"
}
]
},
{
"name": "taxable_amount",
"type": "CURRENCY_AMOUNT",
"description": "Taxable amount or tax base"
},
{
"name": "tax_due_or_withheld",
"type": "CURRENCY_AMOUNT",
"description": "Tax due, assessed, or withheld"
},
{
"name": "currency",
"type": "CURRENCY_CODE",
"description": "Currency code"
}
]
}
});
from iterationlayer import IterationLayer
client = IterationLayer(api_key="YOUR_API_KEY")
result = client.extract_document(**{
"files": [
{
"type": "url",
"name": "ct600.pdf",
"url": "https://example.com/documents/ct600-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "taxpayer_name",
"type": "TEXT",
"description": "Taxpayer, filer, or recipient name"
},
{
"name": "taxpayer_identifier",
"type": "TEXT",
"description": "Taxpayer identifier"
},
{
"name": "issuer_or_authority",
"type": "TEXT",
"description": "Employer, payer, or tax authority"
},
{
"name": "tax_period",
"type": "TEXT",
"description": "Tax year or filing period"
},
{
"name": "tax_lines",
"type": "ARRAY",
"description": "Reported tax lines",
"fields": [
{
"name": "code",
"type": "TEXT",
"description": "Box, line, or tax code"
},
{
"name": "description",
"type": "TEXT",
"description": "Line description"
},
{
"name": "amount",
"type": "CURRENCY_AMOUNT",
"description": "Reported amount"
}
]
},
{
"name": "taxable_amount",
"type": "CURRENCY_AMOUNT",
"description": "Taxable amount or tax base"
},
{
"name": "tax_due_or_withheld",
"type": "CURRENCY_AMOUNT",
"description": "Tax due, assessed, or withheld"
},
{
"name": "currency",
"type": "CURRENCY_CODE",
"description": "Currency code"
}
]
}
})
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: "ct600.pdf",
Url: "https://example.com/documents/ct600-sample.pdf",
},
},
Schema: il.ExtractionSchema{
Fields: []any{
il.TextFieldConfig{
Name: "taxpayer_name",
Type: "TEXT",
Description: "Taxpayer, filer, or recipient name",
},
il.TextFieldConfig{
Name: "taxpayer_identifier",
Type: "TEXT",
Description: "Taxpayer identifier",
},
il.TextFieldConfig{
Name: "issuer_or_authority",
Type: "TEXT",
Description: "Employer, payer, or tax authority",
},
il.TextFieldConfig{
Name: "tax_period",
Type: "TEXT",
Description: "Tax year or filing period",
},
il.ArrayFieldConfig{
Name: "tax_lines",
Type: "ARRAY",
Description: "Reported tax lines",
Fields: []any{
il.TextFieldConfig{
Name: "code",
Type: "TEXT",
Description: "Box, line, or tax code",
},
il.TextFieldConfig{
Name: "description",
Type: "TEXT",
Description: "Line description",
},
il.CurrencyAmountFieldConfig{
Name: "amount",
Type: "CURRENCY_AMOUNT",
Description: "Reported amount",
},
},
},
il.CurrencyAmountFieldConfig{
Name: "taxable_amount",
Type: "CURRENCY_AMOUNT",
Description: "Taxable amount or tax base",
},
il.CurrencyAmountFieldConfig{
Name: "tax_due_or_withheld",
Type: "CURRENCY_AMOUNT",
Description: "Tax due, assessed, or withheld",
},
il.CurrencyCodeFieldConfig{
Name: "currency",
Type: "CURRENCY_CODE",
Description: "Currency code",
},
},
},
})
if err != nil {
panic(err)
}
_ = result
}
{
"name": "Extract CT600 Data",
"nodes": [
{
"parameters": {
"content": "## Extract CT600 Data\n\nTax and finance teams use this recipe to extract CT600 fields from official forms into structured JSON for review, routing, and downstream filing preparation.\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": "extract-ct600-data-overview",
"name": "Overview"
},
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
250,
300
],
"id": "extract-ct600-data-trigger",
"name": "Manual Trigger"
},
{
"parameters": {
"resource": "documentExtraction",
"schemaInputMode": "rawJson",
"schemaJson": "{\n \"fields\": [\n {\n \"name\": \"taxpayer_name\",\n \"type\": \"TEXT\",\n \"description\": \"Taxpayer, filer, or recipient name\"\n },\n {\n \"name\": \"taxpayer_identifier\",\n \"type\": \"TEXT\",\n \"description\": \"Taxpayer identifier\"\n },\n {\n \"name\": \"issuer_or_authority\",\n \"type\": \"TEXT\",\n \"description\": \"Employer, payer, or tax authority\"\n },\n {\n \"name\": \"tax_period\",\n \"type\": \"TEXT\",\n \"description\": \"Tax year or filing period\"\n },\n {\n \"name\": \"tax_lines\",\n \"type\": \"ARRAY\",\n \"description\": \"Reported tax lines\",\n \"fields\": [\n {\n \"name\": \"code\",\n \"type\": \"TEXT\",\n \"description\": \"Box, line, or tax code\"\n },\n {\n \"name\": \"description\",\n \"type\": \"TEXT\",\n \"description\": \"Line description\"\n },\n {\n \"name\": \"amount\",\n \"type\": \"CURRENCY_AMOUNT\",\n \"description\": \"Reported amount\"\n }\n ]\n },\n {\n \"name\": \"taxable_amount\",\n \"type\": \"CURRENCY_AMOUNT\",\n \"description\": \"Taxable amount or tax base\"\n },\n {\n \"name\": \"tax_due_or_withheld\",\n \"type\": \"CURRENCY_AMOUNT\",\n \"description\": \"Tax due, assessed, or withheld\"\n },\n {\n \"name\": \"currency\",\n \"type\": \"CURRENCY_CODE\",\n \"description\": \"Currency code\"\n }\n ]\n}",
"files": {
"fileValues": [
{
"fileInputMode": "url",
"fileName": "ct600.pdf",
"fileUrl": "https://example.com/documents/ct600-sample.pdf"
}
]
}
},
"type": "n8n-nodes-iterationlayer.iterationLayer",
"typeVersion": 1,
"position": [
500,
300
],
"id": "extract-ct600-data-extract",
"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"
}
}
Extract ct600 data from the file at [file URL]. Use the extract_document tool with these fields:
- taxpayer_name (TEXT): Taxpayer, filer, or recipient name
- taxpayer_identifier (TEXT): Taxpayer identifier
- issuer_or_authority (TEXT): Employer, payer, or tax authority
- tax_period (TEXT): Tax year or filing period
- tax_lines (ARRAY): Each with code (TEXT), description (TEXT), amount (CURRENCY_AMOUNT)
- taxable_amount (CURRENCY_AMOUNT): Taxable amount or tax base
- tax_due_or_withheld (CURRENCY_AMOUNT): Tax due, assessed, or withheld
- currency (CURRENCY_CODE): Currency code
Response
{
"success": true,
"data": {
"taxpayer_name": {
"value": "Taxpayer Name",
"confidence": 0.97,
"citations": [
"TAXPAYER NAME"
]
},
"taxpayer_identifier": {
"value": "Taxpayer Identifier",
"confidence": 0.97,
"citations": [
"TAXPAYER IDENTIFIER"
]
},
"issuer_or_authority": {
"value": "Issuer Or Authority",
"confidence": 0.97,
"citations": [
"ISSUER OR AUTHORITY"
]
},
"tax_period": {
"value": "Tax Period",
"confidence": 0.97,
"citations": [
"TAX PERIOD"
]
},
"tax_lines": {
"value": [
{
"code": {
"value": "Code",
"confidence": 0.96,
"citations": [
"CODE"
]
},
"description": {
"value": "Description",
"confidence": 0.96,
"citations": [
"DESCRIPTION"
]
},
"amount": {
"value": {
"amount": "1234.56",
"currency": "GBP"
},
"confidence": 0.96,
"citations": [
"GBP 1,234.56"
]
}
}
],
"confidence": 0.97,
"citations": [
"TAX LINES"
]
},
"taxable_amount": {
"value": {
"amount": "1234.56",
"currency": "GBP"
},
"confidence": 0.97,
"citations": [
"GBP 1,234.56"
]
},
"tax_due_or_withheld": {
"value": {
"amount": "1234.56",
"currency": "GBP"
},
"confidence": 0.97,
"citations": [
"GBP 1,234.56"
]
},
"currency": {
"value": "GBP",
"confidence": 0.97,
"citations": [
"CURRENCY"
]
}
}
}
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