Agent402 UK Pre-Action Validation Kit

x402

Agent402 UK Pre-Action Validation Kit is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.003/call, status down (last checked 2026-09-15).

Validates email, IBAN, phone, UK VAT, UK company number, Vocalink bank modulus (sort code + account number), and currency/country codes in a single batch call before payout or CRM entry

Price / call$0.003

Seller volume →—

Success—

StatusDown

How this service works

Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.

Output

Returns a JSON object with a kit identifier ('pre-action-validate'), an all_ok boolean, and a summary object containing total fields checked, number passed, and number failed — allowing the agent to gate downstream actions on a single boolean.

Example use cases

Supplier onboarding gate for finance agent

“Before we add this new supplier to our system, run a full pre-action check on their details — email is suppliers@globalparts.co.uk, IBAN is GB29NWBK60161331926819, UK VAT is GB987654321, company number is 09876543, sort code 20-00-00, and account number 18764391.”

Pre-payout recipient validation in payroll

“We're about to run payroll — can you validate this employee's bank details before we send money? Sort code is 30-94-11, account number is 12345678, and their email is tom.harris@email.com.”

CRM entry validation before customer record creation

“Before creating this new customer record, check that all their details are valid: email j.smith@company.com, phone +447700900123, UK VAT number GB234567890, and IBAN GB94BARC10201530093459.”

Technical details

Endpoint

POSThttps://agent402.co.uk/v1/validate/pre-action

When to prefer

Use this endpoint when an agent needs to validate multiple payment and identity fields in a single atomic call before initiating a payout, writing to a CRM, or onboarding a supplier — especially in UK-centric workflows requiring Vocalink modulus checks, UK VAT, or Companies House number validation. Prefer this over calling separate validation services for each field, as it reduces latency and cost to a single $0.003 call.

Side effects

Invalid IBAN checksum — field marked as failed in summary
Vocalink modulus check fails for sort code / account number combination
Malformed email syntax — validation fails without sending any message
UK VAT number does not pass format check
Missing both sort_code and account_number when modulus check is intended — partial input may be skipped or error
Network timeout from upstream service — retry recommended
Payment required (402) if USDC balance is insufficient

Input

Schema · Request body

Field	Type	Description
iban	string	IBAN
email	string	Email syntax
phone	string	Phone
uk_vat	string	UK VAT
sort_code	string	With account_number for modulus
account_number	string	With sort_code for modulus
company_number	string	UK company number

Output

Schema · Response

{
  "type": "json",
  "example": {
    "kit": "pre-action-validate",
    "all_ok": true,
    "summary": {
      "total": 3,
      "failed": 0,
      "passed": 3
    }
  }
}

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How this service works

Output

Example use cases

Supplier onboarding gate for finance agent

Pre-payout recipient validation in payroll

“We're about to run payroll — can you validate this employee's bank details before we send money? Sort code is 30-94-11, account number is 12345678, and their email is tom.harris@email.com.”

CRM entry validation before customer record creation

“Before creating this new customer record, check that all their details are valid: email j.smith@company.com, phone +447700900123, UK VAT number GB234567890, and IBAN GB94BARC10201530093459.”

Technical details

Endpoint

POSThttps://agent402.co.uk/v1/validate/pre-action

When to prefer

Side effects

Invalid IBAN checksum — field marked as failed in summary
Vocalink modulus check fails for sort code / account number combination
Malformed email syntax — validation fails without sending any message
UK VAT number does not pass format check
Missing both sort_code and account_number when modulus check is intended — partial input may be skipped or error
Network timeout from upstream service — retry recommended
Payment required (402) if USDC balance is insufficient

Input

Schema · Request body

Field	Type	Description
iban	string	IBAN
email	string	Email syntax
phone	string	Phone
uk_vat	string	UK VAT
sort_code	string	With account_number for modulus
account_number	string	With sort_code for modulus
company_number	string	UK company number

Output

Schema · Response

{
  "type": "json",
  "example": {
    "kit": "pre-action-validate",
    "all_ok": true,
    "summary": {
      "total": 3,
      "failed": 0,
      "passed": 3
    }
  }
}