Check invoice amounts, purchase details and line items; return match, discrepanc
Check invoice amounts, purchase details and line items; return match, discrepancy or needs_review with evidence.
Not tested: has real-world effectsour last check, 2026-09-28
0 of 0checks answered this week
n/amedian answer time
$0.065listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://mcp.dropenginehq.com/api/invoice-preflight
| Category | Everything else |
|---|---|
| Provider host | mcp.dropenginehq.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"document_xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<Invoice xmlns=\"urn:oasis:names:specification:ubl:schema:xsd:Invoice-2\" xmlns:cac=\"urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2\" xmlns:cbc=\"urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2\">\n <cbc:ID>INV-8821</cbc:ID>\n <cbc:DocumentCurrencyCode>USD</cbc:DocumentCurrencyCode>\n <cac:OrderReference><cbc:ID>PO-8841</cbc:ID></cac:OrderReference>\n <cac:AccountingSupplierParty><cac:Party><cac:PartyLegalEntity><cbc:RegistrationName>Example Ltd</cbc:RegistrationName></cac:PartyLegalEntity></cac:Party></cac:AccountingSupplierParty>\n <cac:TaxTotal><cbc:TaxAmount currencyID=\"USD\">24.00</cbc:TaxAmount></cac:TaxTotal>\n <cac:LegalMonetaryTotal><cbc:TaxExclusiveAmount currencyID=\"USD\">100.00</cbc:TaxExclusiveAmount><cbc:PayableAmount currencyID=\"USD\">124.00</cbc:PayableAmount></cac:LegalMonetaryTotal>\n <cac:InvoiceLine><cbc:ID>1</cbc:ID><cbc:LineExtensionAmount currencyID=\"USD\">60.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Service A</cbc:Name></cac:Item></cac:InvoiceLine>\n <cac:InvoiceLine><cbc:ID>2</cbc:ID><cbc:LineExtensionAmount currencyID=\"USD\">40.00</cbc:LineExtensionAmount><cac:Item><cbc:Name>Service B</cbc:Name></cac:Item></cac:InvoiceLine>\n</Invoice>",
"expected": {
"currency": "USD",
"purchase_order": "PO-8841",
"supplier_name": "Example Ltd",
"total": "124.00"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"anyOf": [
{
"required": [
"document_xml"
]
},
{
"required": [
"document_url"
]
},
{
"required": [
"document_base64",
"mime_type"
]
}
],
"properties": {
"document_base64": {
"description": "Base64 encoded PDF, PNG, or JPEG (up to 10 MB, 3 pages for this tool).",
"type": "string"
},
"document_url": {
"description": "Public HTTPS URL to a PDF, PNG, or JPEG (up to 10 MB, 3 pages for this tool).",
"type": "string"
},
"document_xml": {
"description": "UBL Invoice XML document, up to 1 MB.",
"type": "string"
},
"expected": {
"additionalProperties": false,
"properties": {
"currency": {
"maxLength": 3,
"minLength": 3,
"type": "string"
},
"line_items": {
"items": {
"additionalProperties": false,
"properties": {
"amount": {
"type": "string"
},
"description": {
"maxLength": 300,
"minLength": 1,
"type": "string"
}
},
"required": [
"description",
"amount"
],
"type": "object"
},
"maxItems": 1000,
"minItems": 1,
"type": "array"
},
"purchase_order": {
"type": "string"
},
"subtotal": {
"type": "string"
},
"supplier_name": {
"type": "string"
},
"tax": {
"type": "string"
},
"total": {
"type": "string"
}
},
"type": "object"
},
"mime_type": {
"enum": [
"application/pdf",
"image/png",
"image/jpeg"
],
"type": "string"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"checks": {
"items": {
"additionalProperties": false,
"properties": {
"actual": {
"type": "string"
},
"calculated": {
"type": "string"
},
"expected": {
"type": "string"
},
"field": {
"type": "string"
},
"status": {
"enum": [
"match",
"discrepancy",
"needs_review"
],
"type": "string"
}
},
"required": [
"field",
"status"
],
"type": "object"
},
"type": "array"
},
"decision": {
"enum": [
"match",
"discrepancy",
"needs_review"
],
"type": "string"
},
"evidence": {
"items": {
"additionalProperties": false,
"properties": {
"field": {
"type": "string"
},
"source": {
"type": "string"
},
"text": {
"type": "string"
}
},
"required": [
"field",
"source",
"text"
],
"type": "object"
},
"type": "array"
},
"invoice": {
"additionalProperties": false,
"properties": {
"currency": {
"type": [
"string",
"null"
]
},
"line_items": {
"items": {
"additionalProperties": false,
"properties": {
"amount": {
"type": "string"
},
"description": {
"type": [
"string",
"null"
]