Payment Reference Generator

Generate payment references with valid check digits: Swedish OCR, Norwegian KID, Finnish reference and ISO 11649 RF.

Pay by wallet (x402) payment-reference-generate

Example

Input

{
  "type": "ocr_se"
}

Answer

{
  "type": "ocr_se",
  "formatted": "601765530",
  "reference": "601765530",
  "check_digit": "0",
  "algorithm_used": "luhn"
}

Inputs

Field	Type	Required	What it is
`type`	string	Yes	ocr_se/ocr_no/ocr_fi/iso11649/rf
`base_number`	string	No	—

Output fields

How reliably each field appears in a successful answer.

Field	Type	Appears
`type`	string	Always (present in every successful answer)
`formatted`	string	Always (present in every successful answer)
`reference`	string	Always (present in every successful answer)
`check_digit`	string	Always (present in every successful answer)

How to call it

The same tool through each route. MCP clients reach it through Strale’s server at https://api.strale.io/mcp; the call below is what the agent sends.

# Needs an API key. max_price_cents caps what this call may cost.
curl -X POST https://api.strale.io/v1/do \
  -H "Authorization: Bearer $STRALE_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "capability_slug": "payment-reference-generate",
    "inputs": {
      "type": "ocr_se"
    },
    "max_price_cents": 2
  }'

{
  "tool": "strale_execute",
  "arguments": {
    "slug": "payment-reference-generate",
    "inputs": {
      "type": "ocr_se"
    },
    "max_price_cents": 2
  }
}

import { Strale } from "straleio";

const strale = new Strale({ apiKey: process.env.STRALE_API_KEY! });
const result = await strale.do({
  capability_slug: "payment-reference-generate",
  inputs: {
    "type": "ocr_se"
  },
  max_price_cents: 2,
});

import os
from straleio import Strale, DoRequest

strale = Strale(api_key=os.environ["STRALE_API_KEY"])
result = strale.do(DoRequest(
    capability_slug="payment-reference-generate",
    inputs={
        "type": "ocr_se",
    },
    max_price_cents=2,
))

# No account. The first request answers 402 with the price in USDC;
# an x402 client pays it from your wallet and repeats the request.
curl -i 'https://api.strale.io/x402/v2/payment-reference-generate?type=ocr_se'

Limitations

Payment references may need bank-specific validation
Generates standard OCR/reference formats — country-specific payment reference formats may have additional validation requirements
What to do instead: Validate generated references against the receiving bank's format requirements before issuing payment instructions

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