Extract structured fields from i-9 documents.
Scanned 9/10/2026
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---
name: extract-i-9-data
description: Extract structured fields from i-9 documents.
---
# Extract I-9 Data
Finance teams use this recipe to extract I-9 fields into structured JSON for accounts receivable, accounts payable, tax, and ERP workflows.
## APIs Used
Document Extraction (1 credit per page)
## Prerequisites
You need an Iteration Layer API key. Get one at [platform.iterationlayer.com](https://platform.iterationlayer.com) during the 7-day trial.
For full integration guidance (SDKs, auth, MCP, error handling), see the [Iteration Layer Integration Guide](https://iterationlayer.com/SKILL.md).
## Implementation
```bash
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": "i-9.pdf",
"url": "https://example.com/documents/i-9-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "employee_last_name",
"type": "TEXT",
"description": "Employee last name"
},
{
"name": "employee_first_name",
"type": "TEXT",
"description": "Employee first name"
},
{
"name": "employee_address",
"type": "ADDRESS",
"description": "Employee address"
},
{
"name": "date_of_birth",
"type": "DATE",
"description": "Employee date of birth"
},
{
"name": "citizenship_status",
"type": "TEXT",
"description": "Selected citizenship or immigration status"
},
{
"name": "alien_registration_or_uscis_number",
"type": "TEXT",
"description": "Alien Registration Number or USCIS Number if provided"
},
{
"name": "document_title",
"type": "TEXT",
"description": "List A, B, or C document title"
},
{
"name": "document_number",
"type": "TEXT",
"description": "Document number"
},
{
"name": "document_expiration_date",
"type": "DATE",
"description": "Document expiration date"
},
{
"name": "employer_name",
"type": "TEXT",
"description": "Employer or authorized representative name"
},
{
"name": "employer_signature_date",
"type": "DATE",
"description": "Employer certification date"
}
]
}
}'
```
```typescript
import { IterationLayer } from "iterationlayer";
const client = new IterationLayer({ apiKey: "YOUR_API_KEY" });
const result = await client.extractDocument({
"files": [
{
"type": "url",
"name": "i-9.pdf",
"url": "https://example.com/documents/i-9-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "employee_last_name",
"type": "TEXT",
"description": "Employee last name"
},
{
"name": "employee_first_name",
"type": "TEXT",
"description": "Employee first name"
},
{
"name": "employee_address",
"type": "ADDRESS",
"description": "Employee address"
},
{
"name": "date_of_birth",
"type": "DATE",
"description": "Employee date of birth"
},
{
"name": "citizenship_status",
"type": "TEXT",
"description": "Selected citizenship or immigration status"
},
{
"name": "alien_registration_or_uscis_number",
"type": "TEXT",
"description": "Alien Registration Number or USCIS Number if provided"
},
{
"name": "document_title",
"type": "TEXT",
"description": "List A, B, or C document title"
},
{
"name": "document_number",
"type": "TEXT",
"description": "Document number"
},
{
"name": "document_expiration_date",
"type": "DATE",
"description": "Document expiration date"
},
{
"name": "employer_name",
"type": "TEXT",
"description": "Employer or authorized representative name"
},
{
"name": "employer_signature_date",
"type": "DATE",
"description": "Employer certification date"
}
]
}
});
```
```python
from iterationlayer import IterationLayer
client = IterationLayer(api_key="YOUR_API_KEY")
result = client.extract_document(**{
"files": [
{
"type": "url",
"name": "i-9.pdf",
"url": "https://example.com/documents/i-9-sample.pdf"
}
],
"schema": {
"fields": [
{
"name": "employee_last_name",
"type": "TEXT",
"description": "Employee last name"
},
{
"name": "employee_first_name",
"type": "TEXT",
"description": "Employee first name"
},
{
"name": "employee_address",
"type": "ADDRESS",
"description": "Employee address"
},
{
"name": "date_of_birth",
"type": "DATE",
"description": "Employee date of birth"
},
{
"name": "citizenship_status",
"type": "TEXT",
"description": "Selected citizenship or immigration status"
},
{
"name": "alien_registration_or_uscis_number",
"type": "TEXT",
"description": "Alien Registration Number or USCIS Number if provided"
},
{
"name": "document_title",
"type": "TEXT",
"description": "List A, B, or C document title"
},
{
"name": "document_number",
"type": "TEXT",
"description": "Document number"
},
{
"name": "document_expiration_date",
"type": "DATE",
"description": "Document expiration date"
},
{
"name": "employer_name",
"type": "TEXT",
"description": "Employer or authorized representative name"
},
{
"name": "employer_signature_date",
"type": "DATE",
"description": "Employer certification date"
}
]
}
})
```
```go
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: "i-9.pdf",
Url: "https://example.com/documents/i-9-sample.pdf",
},
},
Schema: il.ExtractionSchema{
Fields: []any{
il.TextFieldConfig{
Name: "employee_last_name",
Type: "TEXT",
Description: "Employee last name",
},
il.TextFieldConfig{
Name: "employee_first_name",
Type: "TEXT",
Description: "Employee first name",
},
il.AddressFieldConfig{
Name: "employee_address",
Type: "ADDRESS",
Description: "Employee address",
},
il.DateFieldConfig{
Name: "date_of_birth",
Type: "DATE",
Description: "Employee date of birth",
},
il.TextFieldConfig{
Name: "citizenship_status",
Type: "TEXT",
Description: "Selected citizenship or immigration status",
},
il.TextFieldConfig{
Name: "alien_registration_or_uscis_number",
Type: "TEXT",
Description: "Alien Registration Number or USCIS Number if provided",
},
il.TextFieldConfig{
Name: "document_title",
Type: "TEXT",
Description: "List A, B, or C document title",
},
il.TextFieldConfig{
Name: "document_number",
Type: "TEXT",
Description: "Document number",
},
il.DateFieldConfig{
Name: "document_expiration_date",
Type: "DATE",
Description: "Document expiration date",
},
il.TextFieldConfig{
Name: "employer_name",
Type: "TEXT",
Description: "Employer or authorized representative name",
},
il.DateFieldConfig{
Name: "employer_signature_date",
Type: "DATE",
Description: "Employer certification date",
},
},
},
})
if err != nil {
panic(err)
}
_ = result
}
```
```n8n
{
"name": "Extract I-9 Data",
"nodes": [
{
"parameters": {
"content": "## Extract I-9 Data\n\nFinance teams use this recipe to extract I-9 fields into structured JSON for accounts receivable, accounts payable, tax, and ERP workflows.\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-i-9-data-overview",
"name": "Overview"
},
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
250,
300
],
"id": "extract-i-9-data-trigger",
"name": "Manual Trigger"
},
{
"parameters": {
"resource": "documentExtraction",
"schemaInputMode": "rawJson",
"schemaJson": "{\n \"fields\": [\n {\n \"name\": \"employee_last_name\",\n \"type\": \"TEXT\",\n \"description\": \"Employee last name\"\n },\n {\n \"name\": \"employee_first_name\",\n \"type\": \"TEXT\",\n \"description\": \"Employee first name\"\n },\n {\n \"name\": \"employee_address\",\n \"type\": \"ADDRESS\",\n \"description\": \"Employee address\"\n },\n {\n \"name\": \"date_of_birth\",\n \"type\": \"DATE\",\n \"description\": \"Employee date of birth\"\n },\n {\n \"name\": \"citizenship_status\",\n \"type\": \"TEXT\",\n \"description\": \"Selected citizenship or immigration status\"\n },\n {\n \"name\": \"alien_registration_or_uscis_number\",\n \"type\": \"TEXT\",\n \"description\": \"Alien Registration Number or USCIS Number if provided\"\n },\n {\n \"name\": \"document_title\",\n \"type\": \"TEXT\",\n \"description\": \"List A, B, or C document title\"\n },\n {\n \"name\": \"document_number\",\n \"type\": \"TEXT\",\n \"description\": \"Document number\"\n },\n {\n \"name\": \"document_expiration_date\",\n \"type\": \"DATE\",\n \"description\": \"Document expiration date\"\n },\n {\n \"name\": \"employer_name\",\n \"type\": \"TEXT\",\n \"description\": \"Employer or authorized representative name\"\n },\n {\n \"name\": \"employer_signature_date\",\n \"type\": \"DATE\",\n \"description\": \"Employer certification date\"\n }\n ]\n}",
"files": {
"fileValues": [
{
"fileInputMode": "url",
"fileName": "i-9.pdf",
"fileUrl": "https://example.com/documents/i-9-sample.pdf"
}
]
}
},
"type": "n8n-nodes-iterationlayer.iterationLayer",
"typeVersion": 1,
"position": [
500,
300
],
"id": "extract-i-9-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"
}
}
```
```prompt
Extract i-9 data from the file at [file URL]. Use the extract_document tool with these fields:
- employee_last_name (TEXT): Employee last name
- employee_first_name (TEXT): Employee first name
- employee_address (ADDRESS): Employee address
- date_of_birth (DATE): Employee date of birth
- citizenship_status (TEXT): Selected citizenship or immigration status
- alien_registration_or_uscis_number (TEXT): Alien Registration Number or USCIS Number if provided
- document_title (TEXT): List A, B, or C document title
- document_number (TEXT): Document number
- document_expiration_date (DATE): Document expiration date
- employer_name (TEXT): Employer or authorized representative name
- employer_signature_date (DATE): Employer certification date
```
### Response
```json
{
"success": true,
"data": {
"employee_last_name": {
"value": "Employee Last Name",
"confidence": 0.97,
"citations": [
"EMPLOYEE LAST NAME"
]
},
"employee_first_name": {
"value": "Employee First Name",
"confidence": 0.97,
"citations": [
"EMPLOYEE FIRST NAME"
]
},
"employee_address": {
"value": {
"street": "100 Market Street",
"city": "Berlin",
"postal_code": "10115",
"country": "DE"
},
"confidence": 0.97,
"citations": [
"EMPLOYEE ADDRESS"
]
},
"date_of_birth": {
"value": "2026-04-15",
"confidence": 0.97,
"citations": [
"15 Apr 2026"
]
},
"citizenship_status": {
"value": "Citizenship Status",
"confidence": 0.97,
"citations": [
"CITIZENSHIP STATUS"
]
},
"alien_registration_or_uscis_number": {
"value": "Alien Registration Or Uscis Number",
"confidence": 0.97,
"citations": [
"ALIEN REGISTRATION OR USCIS NUMBER"
]
},
"document_title": {
"value": "Document Title",
"confidence": 0.97,
"citations": [
"DOCUMENT TITLE"
]
},
"document_number": {
"value": "BL-2026-00418",
"confidence": 0.97,
"citations": [
"DOCUMENT NUMBER"
]
},
"document_expiration_date": {
"value": "2026-04-15",
"confidence": 0.97,
"citations": [
"15 Apr 2026"
]
},
"employer_name": {
"value": "Employer Name",
"confidence": 0.97,
"citations": [
"EMPLOYER NAME"
]
},
"employer_signature_date": {
"value": "2026-04-15",
"confidence": 0.97,
"citations": [
"15 Apr 2026"
]
}
}
}
```
## Links
- [Integration guide](https://iterationlayer.com/SKILL.md)
- [Full documentation](https://iterationlayer.com/docs)
- [OpenAPI spec](https://api.iterationlayer.com/openapi.json)
- [Browse all recipes](https://iterationlayer.com/recipes)
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