Platform

Nexto API

Two layers: ready-made services available today on api.nextofx.com, and an API for your exchange's data that opens only with your own key.

Available today

Ready-made services

Prepaid, with a dedicated key per application. A repeated inquiry with the same key is free.

Bank and identity inquiries

For the remittance form, customer onboarding and the AML file

IBAN inquiry

Holder name, bank and transferability

/v1/sheba_inquiry

Card inquiry

Cardholder name

/v1/card_inquiry

Card to IBAN

Convert a card number to IBAN

/v1/card_to_iban

Account to IBAN

Convert an account number to IBAN

/v1/account_to_iban

Sayad cheque inquiry

Status and details of a Sayad cheque

/v1/check_sayad_inquiry

Bounced cheques

Issuer's bounced-cheque history

/v1/bounced_cheque

Shahkar

Match a mobile number to a national ID

/v1/shahkar

IBAN vs national ID

Does the IBAN belong to this national ID

/v1/check_iban_with_national_code

Card vs national ID

Does the card belong to this national ID

/v1/check_card_with_national_code

Identity inquiry

Match a national ID to identity details

/v1/national_identity_inquiry

Operations and intelligence

The same ones Nexto itself uses every day

Tron energy rental

Send USDT without burning TRX

/v1/energy_rent

Bank receipt OCR

Extract amount, IBAN or card and date from a receipt image

/v1/receipt_ocr

Live rates

Currency rate feed; free

/v1/rates

Ask the assistant

Nexto's smart assistant answers one question

/v1/assistant_question

Example call

curl -X POST https://api.nextofx.com/v1/sheba_inquiry \
  -H "X-Api-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"iban": "IR0000000000000000000000"}'

The response is JSON: holder name, bank name and transferability. An invalid IBAN is rejected at no charge.

Current pricing

Each inquiry and OCR: $0.01
Tron energy rental: $1 per rental
Live rates: free
Nexto plans: monthly gift credit

Top up with USDT; the key and documentation are delivered over WhatsApp.

On request

An API for your exchange's data

Your exchange's data lives in your own tenant and has no default path to the outside. This API opens only with a key the exchange manager creates inside the app, and the order of implementation is set by the requests on file.

Your rate board

Your own buy and sell rates for your website, Telegram bot or shop display.

Customer balance and statement

What the portal shows, inside your own app or website.

Accounts and documents

Read accounts and documents for a dashboard, an auditor or a side system.

How it is built

You hold the key

The exchange manager creates the key inside the app, revokes it whenever they want, and it has an expiry date.

Only as much as needed

Each key has explicit scopes: rates, balances, accounts. A rate-board key reaches nothing else.

Everything is logged

Every call lands in the activity log with its key, path and caller address; you also get an IP allow-list.

Read first

The first version is read-only. Writing documents and webhooks are done as a joint project for server-licence customers.

Request access

Tell us what you are connecting to what

For the ready-made services we send the key and documentation. For the exchange-data API your request joins the implementation queue and we get back to you the same way you contacted us.

Do I have to be a Nexto customer to use the ready-made services?

No. Any application with a key and prepaid credit can use them. Nexto customers have the same services inside the app with no coding, and plans include a monthly gift credit.

Does my exchange's data leave the server?

Only with a key you created, and only within the scopes you granted. Without a key, no path to your data is open.

Is there an SDK?

It is plain REST with JSON; one curl example is enough to start. Each service's documentation is delivered with the key.