PaidPilot Invoice API
payment-ready until 2026-11-03
Invoice tools for AI agents, paid per call in USDC on Base over x402, no accounts or API keys: invoice PDF ($0.02), payment reminder drafts, late-fee and payment-terms math ($0.01 each), and timesheet to invoice ($0.02).
Compare: all PDF APIs
Call it x402 v2
x402 v2
- Base URL
- https://api.paidpilot.io
- Payment
- x402 v2, header channel
$ curl -i -X POST 'https://api.paidpilot.io/v1/invoice-from-timesheet' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 5 paid routes on api.paidpilot.io
Prices as captured in the 402 response: median $0.01 across the 5 endpoints, unchanged since first capture.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| POST | / | Turn timesheet entries into invoice JSON. $0.02 USDC on Base per call. Hours x rate, optional rounding, grouping, expenses, tax and terms become a validated invoice JSON with totals, ready for /v1/invoice.pdf. Don't use this for the PDF itself; send the result to /v1/invoice.pdf. | $0.02 | Base | USDC | header | since 10-27 |
| POST | / | Turn invoice JSON into a print-ready PDF. Input (JSON body): seller, buyer, invoice_number, issue_date, line_items[{description,quantity,unit_price}], optional due_date, currency, tax_rate, discount, notes, payment_instructions. Returns application/pdf bytes, multi-page if needed. Totals, tax and discount are computed server-side; the X-Invoice-Total header carries the total. 12 currencies. $0.02 USDC on Base. Check the body free first at POST /v1/invoice/validate. Doesn't send the invoice. | $0.02 | Base | USDC | header | since 10-27 |
| POST | / | Calculate a late fee on an overdue invoice. $0.01 USDC on Base per call. Flat, monthly % or annual %, simple or compounding, with grace days. Returns days late, fee, new total and a paste-ready invoice line. Don't use this for legal advice; state caps are not looked up. | $0.01 | Base | USDC | header | since 10-27 |
| POST | / | Work out an invoice due date and early-pay discount from terms like Net 30 or 2/10 Net 30. $0.01 USDC on Base per call. Parses Net N, D/N Net M, Due on receipt, EOM and Net N EOM. Returns due date, days until due or overdue, discount and deadline, the annualized cost of skipping it and reminder dates. Don't use this for late fees; use /v1/late-fee. | $0.01 | Base | USDC | header | since 10-27 |
| POST | / | Write a payment reminder email for an unpaid invoice (friendly, firm or final notice). $0.01 USDC on Base per call. Returns subject and plain-text body, days overdue, the recommended tone and the next step. Template-based and deterministic. Don't use this for sending email; it only drafts. | $0.01 | Base | USDC | header | since 10-27 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 5 payloads captured by the monitor.
258 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2dAF658B01e257206375798a15832E9f547D65dD",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.paidpilot.io/v1/invoice.pdf",
"tags": [
"invoice-pdf",
"invoice-generator",
"pdf",
"billing"
],
"mimeType": "application/pdf",
"description": "Turn invoice JSON into a print-ready PDF. Input (JSON body): seller, buyer, invoice_number, issue_date, line_items[{description,quantity,unit_price}], optional due_date, currency, tax_rate, discount, notes, payment_instructions. Returns application/pdf bytes, multi-page if needed. Totals, tax and discount are computed server-side; the X-Invoice-Total header carries the total. 12 currencies. $0.02 USDC on Base. Check the body free first at POST /v1/invoice/validate. Doesn't send the invoice.",
"serviceName": "PaidPilot Invoice API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"buyer": {
"name": "Blue River Bakery",
"address": "45 Dodge St, Omaha, NE 68102"
},
"notes": "Thank you for your business.",
"seller": {
"name": "Acme Web Studio LLC",
"email": "[email protected]",
"address": "123 Main St, Omaha, NE 68102"
},
"currency": "USD",
"due_date": "2026-11-08",
"tax_rate": 7,
"issue_date": "2026-10-09",
"line_items": [
{
"quantity": 1,
"unit_price": 1200,
"description": "Website redesign (fixed fee)"
},
{
"quantity": 1,
"unit_price": 25,
"description": "Hosting, October"
},
{
"quantity": 3.5,
"unit_price": 80,
"description": "Support hours"
}
],
"invoice_number": "INV-1001",
"payment_instructions": "ACH to account ending 1234 within 30 days."
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"seller",
"buyer",
"invoice_number",
"issue_date",
"line_items"
],
"properties": {
"buyer": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 120,
"minLength": 1
},
"email": {
"type": "string",
"format": "email",
"pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
"maxLength": 254
},
"phone": {
"type": "string",
"maxLength": 40
},
"tax_id": {
"type": "string",
"maxLength": 60
},
"address": {
"type": "string",
"maxLength": 400
}
}
},
"notes": {
"type": "string",
"maxLength": 2000
},
"seller": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 120,
"minLength": 1
},
"email": {
"type": "string",
"format": "email",
"pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
"maxLength": 254
},
"phone": {
"type": "string",
"maxLength": 40
},
"tax_id": {
"type": "string",
"maxLength": 60
},
"address": {
"type": "string",
"maxLength": 400
}
}
},
"currency": {
"type": "string",
"default": "USD"
},
"discount": {
"type": "number",
"maximum": 1000000000,
"minimum": 0,
"description": "absolute amount subtracted before tax"
},
"due_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"tax_rate": {
"type": "number",
"maximum": 100,
"minimum": 0,
"description": "percent, e.g. 7.5"
},
"issue_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"line_items": {
"type": "array",
"items": {
"type": "object",
"required": [
"description",
"quantity",
"unit_price"
],
"properties": {
"quantity": {
"type": "number",
"maximum": 1000000,
"exclusiveMinimum": 0
},
"unit_price": {
"type": "number",
"maximum": 1000000000,
"minimum": 0
},
"description": {
"type": "string",
"maxLength": 300,
"minLength": 1
}
}
},
"maxItems": 200,
"minItems": 1
},
"invoice_number": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"payment_instructions": {
"type": "string",
"maxLength": 1000
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
} Other captured 402 responses (4)
Captured payload 2 of 5
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2dAF658B01e257206375798a15832E9f547D65dD",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.paidpilot.io/v1/reminder-draft",
"tags": [
"payment-reminder",
"overdue-invoice",
"dunning-email",
"accounts-receivable"
],
"mimeType": "application/json",
"description": "Write a payment reminder email for an unpaid invoice (friendly, firm or final notice). $0.01 USDC on Base per call. Returns subject and plain-text body, days overdue, the recommended tone and the next step. Template-based and deterministic. Don't use this for sending email; it only drafts.",
"serviceName": "PaidPilot Invoice API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"tone": "firm",
"as_of": "2026-10-11",
"amount": 1610.35,
"currency": "USD",
"due_date": "2026-10-01",
"from_name": "Acme Web Studio",
"client_name": "Dana",
"payment_link": "https://pay.example.com/inv-1001",
"invoice_number": "INV-1001"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"body": "Hi Dana,\n\nI'm following up on invoice #INV-1001 for $1,610.35, which was due on October 1, 2026. It is now 10 days past due. I haven't received payment yet, so I wanted to check in directly.\n\nYou can pay here: https://pay.example.com/inv-1001\n\nCould you let me know when payment will be sent? If there's a problem with the invoice, tell me and I'll sort it out right away.\n\nThank you,\nAcme Web Studio",
"note": "Draft text only. This API never sends email; review and edit before you send it yourself.",
"tone": "firm",
"as_of": "2026-10-11",
"subject": "Overdue: invoice #INV-1001",
"next_step": "If still unpaid around 14 days past due, send the final notice.",
"days_overdue": 10,
"recommended_tone_for_days_overdue": "firm"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"tone",
"from_name"
],
"properties": {
"tone": {
"enum": [
"friendly",
"polite",
"firm",
"final"
],
"type": "string",
"description": "\"friendly\" (alias \"polite\"), \"firm\", or \"final\""
},
"as_of": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Today's date for the days-overdue count, YYYY-MM-DD (default: today, UTC)"
},
"amount": {
"type": "number",
"maximum": 1000000000,
"description": "Amount due",
"exclusiveMinimum": 0
},
"currency": {
"type": "string",
"default": "USD",
"description": "ISO-4217, default USD"
},
"due_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "YYYY-MM-DD"
},
"from_name": {
"type": "string",
"maxLength": 120,
"minLength": 1,
"description": "Your name or business, used in the sign-off"
},
"client_name": {
"type": "string",
"maxLength": 120,
"minLength": 1,
"description": "Client's name for the greeting"
},
"payment_link": {
"type": "string",
"format": "uri",
"maxLength": 500
},
"invoice_number": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"late_fee_terms": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Your agreed late-fee terms, e.g. \"1.5% per month\"; mentioned in the final notice only"
},
"final_deadline_days": {
"type": "integer",
"default": 7,
"maximum": 60,
"minimum": 1,
"description": "Final notice: days the client has to pay"
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 3 of 5
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2dAF658B01e257206375798a15832E9f547D65dD",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.paidpilot.io/v1/late-fee",
"tags": [
"late-fee",
"interest-calculator",
"overdue-invoice",
"billing"
],
"mimeType": "application/json",
"description": "Calculate a late fee on an overdue invoice. $0.01 USDC on Base per call. Flat, monthly % or annual %, simple or compounding, with grace days. Returns days late, fee, new total and a paste-ready invoice line. Don't use this for legal advice; state caps are not looked up.",
"serviceName": "PaidPilot Invoice API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"as_of": "2026-10-11",
"state": "NE",
"amount": 1610.35,
"currency": "USD",
"due_date": "2026-09-01",
"fee_type": "monthly_percent",
"grace_days": 5,
"compounding": false,
"rate_percent": 1.5
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"as_of": "2026-10-11",
"amount": 1610.35,
"method": "1.5% per month (30-day months), simple",
"currency": "USD",
"due_date": "2026-09-01",
"flat_fee": 0,
"interest": 28.18,
"new_total": 1638.53,
"grace_days": 5,
"legal_note": "Not legal advice. Late-fee and interest limits vary by state, by contract, and by whether the customer is a consumer or a business. This tool does NOT look up any state's limit. You entered Nebraska (NE): check Nebraska's usury and late-charge rules, or ask an attorney, before charging this. Charge a late fee only if it was set out in advance, in your contract or on the invoice.",
"days_charged": 35,
"invoice_line": "Late fee: $28.18 (35 days past due after 5 grace days). New total: $1,638.53.",
"days_past_due": 40,
"total_late_fee": 28.18,
"average_fee_per_day_charged": 0.81,
"nominal_annual_rate_percent": 18
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"amount",
"due_date",
"fee_type"
],
"properties": {
"as_of": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Date paid, or the date to calculate to, YYYY-MM-DD (default: today, UTC)"
},
"state": {
"type": "string",
"description": "US state (2-letter) for the legal note"
},
"amount": {
"type": "number",
"maximum": 1000000000,
"description": "Unpaid invoice amount",
"exclusiveMinimum": 0
},
"currency": {
"type": "string",
"default": "USD",
"description": "ISO-4217, default USD"
},
"due_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Invoice due date, YYYY-MM-DD"
},
"fee_type": {
"enum": [
"flat",
"monthly_percent",
"annual_percent"
],
"type": "string",
"description": "flat = one fixed fee; monthly_percent e.g. 1.5; annual_percent e.g. 18"
},
"flat_fee": {
"type": "number",
"maximum": 1000000,
"minimum": 0,
"description": "Flat fee; required for fee_type=flat, optional one-time add-on otherwise"
},
"grace_days": {
"type": "integer",
"default": 0,
"maximum": 365,
"minimum": 0,
"description": "Days after the due date before any fee applies"
},
"compounding": {
"type": "boolean",
"default": false,
"description": "false = simple interest (default); true = compounds (monthly: per 30 days; annual: daily)"
},
"rate_percent": {
"type": "number",
"maximum": 100,
"minimum": 0,
"description": "Rate for monthly_percent / annual_percent"
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 4 of 5
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2dAF658B01e257206375798a15832E9f547D65dD",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.paidpilot.io/v1/payment-terms",
"tags": [
"payment-terms",
"net-30",
"due-date",
"early-payment-discount"
],
"mimeType": "application/json",
"description": "Work out an invoice due date and early-pay discount from terms like Net 30 or 2/10 Net 30. $0.01 USDC on Base per call. Parses Net N, D/N Net M, Due on receipt, EOM and Net N EOM. Returns due date, days until due or overdue, discount and deadline, the annualized cost of skipping it and reminder dates. Don't use this for late fees; use /v1/late-fee.",
"serviceName": "PaidPilot Invoice API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"as_of": "2026-10-11",
"terms": "2/10 Net 30",
"amount": 1610.35,
"currency": "USD",
"invoice_date": "2026-10-01"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"notes": [
"Calendar days from the invoice date; weekends and holidays are not adjusted. Your contract terms control if they differ."
],
"terms": "2/10 Net 30",
"amount": 1610.35,
"status": {
"text": "Due in 20 days",
"as_of": "2026-10-11",
"state": "not_yet_due",
"days_overdue": 0,
"days_until_due": 20
},
"currency": "USD",
"due_date": "2026-10-31",
"invoice_date": "2026-10-01",
"suggested_reminders": [
{
"date": "2026-10-28",
"tone": "friendly",
"label": "Friendly heads-up, 3 days before due"
},
{
"date": "2026-10-31",
"tone": "friendly",
"label": "On the due date"
},
{
"date": "2026-11-07",
"tone": "firm",
"label": "7 days overdue"
},
{
"date": "2026-11-14",
"tone": "final",
"label": "14 days overdue"
}
],
"early_payment_discount": {
"display": "Pay $1,578.14 by 2026-10-11 (save $32.21), otherwise $1,610.35 by 2026-10-31.",
"percent": 2,
"deadline": "2026-10-11",
"pay_if_early": 1578.14,
"discount_amount": 32.21,
"annualized_cost_note": "Simple annualized rate the buyer implicitly pays by skipping the discount: d/(100-d) x 365/(net days - discount days).",
"still_available_as_of": true,
"annualized_cost_of_skipping_percent": 37.24
},
"days_from_invoice_to_due": 30
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"invoice_date",
"terms"
],
"properties": {
"as_of": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Date to compute status for, YYYY-MM-DD (default: today, UTC)"
},
"terms": {
"type": "string",
"maxLength": 40,
"minLength": 1,
"description": "Payment terms, e.g. \"Net 30\", \"2/10 Net 30\", \"Due on receipt\", \"EOM\", \"Net 30 EOM\""
},
"amount": {
"type": "number",
"maximum": 1000000000,
"minimum": 0,
"description": "Invoice total (optional; enables the discount math)"
},
"currency": {
"type": "string",
"default": "USD",
"description": "ISO-4217, default USD"
},
"invoice_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Invoice date, YYYY-MM-DD"
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 5 of 5
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2dAF658B01e257206375798a15832E9f547D65dD",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://api.paidpilot.io/v1/invoice-from-timesheet",
"tags": [
"timesheet",
"invoice",
"billable-hours",
"time-tracking"
],
"mimeType": "application/json",
"description": "Turn timesheet entries into invoice JSON. $0.02 USDC on Base per call. Hours x rate, optional rounding, grouping, expenses, tax and terms become a validated invoice JSON with totals, ready for /v1/invoice.pdf. Don't use this for the PDF itself; send the result to /v1/invoice.pdf.",
"serviceName": "PaidPilot Invoice API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"buyer": {
"name": "Blue River Bakery"
},
"terms": "Net 15",
"seller": {
"name": "Acme Web Studio LLC",
"email": "[email protected]"
},
"entries": [
{
"date": "2026-10-05",
"hours": 1.6,
"description": "Website fixes"
},
{
"date": "2026-10-06",
"hours": 2.25,
"description": "Website fixes"
},
{
"date": "2026-10-08",
"rate": 95,
"hours": 3,
"description": "Menu photo shoot"
}
],
"currency": "USD",
"expenses": [
{
"amount": 29,
"description": "Stock photo license"
}
],
"group_by": "description",
"rounding": {
"mode": "up",
"increment_minutes": 15
},
"tax_rate": 7,
"issue_date": "2026-10-11",
"default_rate": 85,
"invoice_number": "INV-1002"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"next": {
"pdf": "POST https://api.paidpilot.io/v1/invoice.pdf with the \"invoice\" object as the JSON body ($0.02 in USDC via x402) to get the PDF.",
"validate_free": "POST https://api.paidpilot.io/v1/invoice/validate"
},
"hours": {
"billed": 7,
"entered": 6.85,
"entries": 3,
"entries_rounded_to_zero": 0
},
"totals": {
"tax": "45.78 USD",
"total": "699.78 USD",
"currency": "USD",
"discount": "0.00 USD",
"subtotal": "654.00 USD"
},
"invoice": {
"buyer": {
"name": "Blue River Bakery"
},
"seller": {
"name": "Acme Web Studio LLC",
"email": "[email protected]"
},
"currency": "USD",
"due_date": "2026-10-26",
"tax_rate": 7,
"issue_date": "2026-10-11",
"line_items": [
{
"quantity": 4,
"unit_price": 85,
"description": "Website fixes (2026-10-05 to 2026-10-06)"
},
{
"quantity": 3,
"unit_price": 95,
"description": "Menu photo shoot (2026-10-08)"
},
{
"quantity": 1,
"unit_price": 29,
"description": "Expense: Stock photo license"
}
],
"invoice_number": "INV-1002",
"payment_instructions": "Terms: Net 15, due 2026-10-26."
},
"rounding": "up 15 min per entry",
"line_count": 3
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"seller",
"buyer",
"invoice_number",
"issue_date",
"entries"
],
"properties": {
"buyer": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 120,
"minLength": 1
},
"email": {
"type": "string",
"format": "email",
"pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
"maxLength": 254
},
"phone": {
"type": "string",
"maxLength": 40
},
"tax_id": {
"type": "string",
"maxLength": 60
},
"address": {
"type": "string",
"maxLength": 400
}
}
},
"notes": {
"type": "string",
"maxLength": 2000
},
"terms": {
"type": "string",
"maxLength": 40,
"minLength": 1,
"description": "e.g. \"Net 15\"; sets due_date from issue_date (early-pay discounts are not applied to the invoice)"
},
"seller": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 120,
"minLength": 1
},
"email": {
"type": "string",
"format": "email",
"pattern": "^(?:[A-Za-z0-9_'+\\-]+\\.)*[A-Za-z0-9_'+\\-]*[A-Za-z0-9_+-]@(?:[A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$",
"maxLength": 254
},
"phone": {
"type": "string",
"maxLength": 40
},
"tax_id": {
"type": "string",
"maxLength": 60
},
"address": {
"type": "string",
"maxLength": 400
}
}
},
"entries": {
"type": "array",
"items": {
"type": "object",
"required": [
"description",
"hours"
],
"properties": {
"date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"rate": {
"type": "number",
"maximum": 1000000,
"minimum": 0
},
"hours": {
"type": "number",
"maximum": 1000,
"exclusiveMinimum": 0
},
"description": {
"type": "string",
"maxLength": 250,
"minLength": 1
}
},
"additionalProperties": false
},
"maxItems": 500,
"minItems": 1
},
"currency": {
"type": "string",
"default": "USD"
},
"discount": {
"type": "number",
"maximum": 1000000000,
"minimum": 0
},
"due_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "YYYY-MM-DD; or give terms instead"
},
"expenses": {
"type": "array",
"items": {
"type": "object",
"required": [
"description",
"amount"
],
"properties": {
"amount": {
"type": "number",
"maximum": 1000000000,
"minimum": 0
},
"description": {
"type": "string",
"maxLength": 250,
"minLength": 1
}
},
"additionalProperties": false
},
"maxItems": 100,
"description": "Reimbursable expenses, one line each"
},
"group_by": {
"enum": [
"entry",
"description"
],
"type": "string",
"default": "entry",
"description": "entry = one line per entry; description = merge entries with the same description and rate"
},
"rounding": {
"type": "object",
"required": [
"increment_minutes"
],
"properties": {
"mode": {
"enum": [
"up",
"nearest"
],
"type": "string",
"default": "up"
},
"increment_minutes": {
"anyOf": [
{
"type": "number",
"const": 1
},
{
"type": "number",
"const": 5
},
{
"type": "number",
"const": 6
},
{
"type": "number",
"const": 10
},
{
"type": "number",
"const": 15
},
{
"type": "number",
"const": 30
},
{
"type": "number",
"const": 60
}
],
"description": "Round each entry to this many minutes"
}
},
"additionalProperties": false
},
"tax_rate": {
"type": "number",
"maximum": 100,
"minimum": 0
},
"issue_date": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"default_rate": {
"type": "number",
"maximum": 1000000,
"minimum": 0,
"description": "Hourly rate for entries without their own rate"
},
"invoice_number": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"payment_instructions": {
"type": "string",
"maxLength": 1000
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
#37 of 129 in Finance. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 100% uptime since 10-27
- Compliance
- A 14/14 checks pass
- Price
- $0.01 to $0.02 p49 in Finance
- Risk
- clean no risk flag
- Traction
- $0.00 30d 0 buyers
14/14 compliance checks
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
402 terms unchanged since 2026-10-27. Last up 2026-10-27.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
What the score read on this service: status online, 100% uptime, latest daily rollup (no 30d window yet), 278ms response p95, x402 compliance 14 of 14, $0.01 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
It is a score inside Finance, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 129 listings, this one among them: the same 129 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
Traction is a conservative undercount.
All measured facts
What it does
Invoice tools for AI agents, paid per call in USDC on Base over x402, no accounts or API keys: invoice PDF ($0.02), payment reminder drafts, late-fee and payment-terms math ($0.01 each), and timesheet to invoice ($0.02). Nothing is stored and no email is sent. Also a remote MCP server at /mcp.
PaidPilot Invoice API is a listed x402 Finance API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-09-28 to 2026-10-27 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Finance
- uptime · latest daily rollup
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 278ms
- avg response
- 278ms
- total checks
- 1
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.01
- price (max)
- $0.02
- category percentile (min)
- p49 in Finance
- category percentile (max)
- p38 in Finance
- endpoints / prices
- 5 / 2
- model
- tiered
- stability
- 100%
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- -
- registrar
- -
- hosting
- custom
- domain created
- ---
Identity facts, not a risk score.
- assessment volume 30d
- $0.00
- exact assessment volume 30d (USD)
- 0
- assessment recorded at (UTC)
- 2026-10-27T11:33:54.256Z
- buyers 30d
- 0
- settlements 30d
- 0
- measured since
- --- (start of our harvest window)
- last settlement
- ---
- top buyer share
- -
- top 3 buyers share
- -
- concentrated volume
- no
- trend 7d vs 30d
- -
- networks
- eip155:8453
- volume all-time
- $0
- settlements all-time
- 0
- median settlement 30d
- -
- max settlement 30d
- -
Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.
- member since
- 2026-10-27
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 173ms | 5 | |
| Online | 402 | 179ms | 5 | |
| Online | 402 | 176ms | 5 | |
| Online | 402 | 207ms | 5 | |
| Online | 402 | 196ms | 5 | |
| Online | 402 | 129ms | 5 | |
| Online | 402 | 152ms | 5 | |
| Online | 402 | 133ms | 5 | |
| Online | 402 | 278ms | 5 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
- Volume 30d
- $0.00
- Uptime
- no completed-day data
More charts
09-28 to 10-27* UTC
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
* today so far, partial (UTC).
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Daily snapshot total, no volume data in the last 30d. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.
Daily address snapshots: 2026-09-28 to 2026-10-27 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.
Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Volume | Buyers | Settlements | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|---|---|---|
| 2026-10-27* | no data | no data | no data | 100% | 182.50ms | 14/14 | p49 | 4/6 |
Alternatives in Finance
5 of 128 other ranked services in Finance, ordered by the same measured score.
Own this service?
Keep this listing accurate. Ownership is proven with a domain check and every change is reviewed by hand.
Update this listingEarn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.
Verify this service ($0.25)Embed a badge
HTML
<a href="https://x402-list.com/services/ paidpilot-invoice-api? utm_source=badge& utm_medium=referral& utm_campaign=embed"> <img src="https://x402-list.com/ badge/ paidpilot-invoice-api.svg" alt="PaidPilot Invoice API listed on x402-list" height="28"> </a>
Markdown
[](https://x402-list.com/ services/ paidpilot-invoice-api? utm_source=badge& utm_medium=referral& utm_campaign=embed)
HTML, live uptime variant
<a href="https://x402-list.com/services/ paidpilot-invoice-api? utm_source=badge& utm_medium=referral& utm_campaign=embed"> <img src="https://x402-list.com/ badge/ paidpilot-invoice-api.svg? data=uptime" alt="PaidPilot Invoice API uptime on x402-list" height="28"> </a>
Delisting
To request delisting, email info@x402-list.com with the service name, slug, or URL. Removal is free and does not require proof of ownership. Contact.