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Agent402 UK Postcode Format Normalizer
x402
Agent402 UK Postcode Format Normalizer is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Validates and normalizes a UK postcode string into standard outward+inward format (e.g. 'SW1A 1AA'), confirming structural correctness without geo lookup.
Price / call$0.001
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 'formatted' (the postcode in canonical 'OUTWARD INWARD' spacing, e.g. 'SW1A 1AA') and 'valid_format' (boolean indicating whether the input matches a valid UK postcode structure). Does not include geographic or delivery data.
Example use cases
Sanitize postcode before address lookup
“The user entered 'ec1a1bb' as their postcode — can you format it correctly into standard UK postcode format before I pass it to the address lookup service?”
Validate postcode field in checkout form
“Before we save this order, check whether the postcode 'W1A0AX' the customer entered is a valid UK postcode format and return it properly spaced.”
Bulk clean postcode data in pipeline
“I have a postcode string 'M11AE' coming through my data pipeline — normalize it to the proper UK outward+inward format and confirm it's structurally correct.”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/validate/uk-postcodeWhen to prefer
Use this endpoint when you need lightweight, fast structural validation and normalization of a UK postcode string — before passing it to a geo lookup, storing in a database, or presenting to a user. It does not perform geographic resolution; for lat/lon or delivery zone data use GET /v1/data/uk/postcode instead. Ideal for form validation pipelines, address sanitization, and data cleaning workflows where you only need format correctness confirmed.
Side effects
- Input postcode is completely unparseable — may return valid_format: false with no formatted output
- Non-UK postal formats (e.g. US ZIP codes) will fail structural validation
- Missing or empty postcode field returns validation error
- Ambiguous alphanumeric strings that partially resemble postcodes may return false negatives
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| postcode | string | UK postcode |
Output
Schema · Response
{
"type": "json",
"example": {
"formatted": "SW1A 1AA",
"valid_format": true
}
}Tags
x402
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