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Add a crypto converter to your site
and embed it on any page.

Describe the pairs your readers ask about and Netiva’s AI builds a web app that converts crypto to fiat and coin to coin from your own rates feed — with pair pages, an embed and code you own.

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Starter prompt

Build a crypto converter web app for a crypto publisher. Keep an Assets collection of coins and fiat currencies, each with its ID at my rates provider, the decimals to show and the sub-unit printed under small amounts. Every two minutes, refresh one reference rate per asset from my provider’s API and work out any pair from those numbers. The converter takes an amount, a from asset and a to asset, swaps direction in one tap and shows the rate used, its source, the fetch time and a line calling it indicative. Give popular pairs their own pages, such as /convert/btc-to-eur, and a stripped-down route other sites can embed with the same lines.

Build it in Netiva Paste the prompt into a new workspace and adjust it to your business.
Overview

Who this crypto converter is for

A reader halfway through your Bitcoin guide wants one number: what 0.35 BTC is worth in euros right now. Send them to a third-party converter and the visit goes with them, along with the vendor’s coin list, branding and links back out. A crypto converter built with Netiva runs on your own domain, with the assets you cover, the rates feed you pay for and a page for every pair readers search. Partner sites and your own articles load the same converter through a small embed.

Key features

What your crypto converter can do

  • Any pair from one reference rate

    Each asset keeps a single rate against your reference currency. The app divides one by the other, so BTC to EUR, EUR to SOL and SOL to BTC all come out of the same refresh instead of a separate call per pair.

    • Crypto to fiat, fiat to crypto and coin to coin
    • A swap button that flips the two sides and keeps the amount
    • The rate, its provider and the fetch time shown under the result
    • One scheduled call per feed, not one per pair

  • Decimals that match the asset

    A converter is only trusted if the numbers look right. Each asset carries the decimals it should display and the sub-unit printed under it, so 0.00021 BTC doesn’t round away to zero and a yen amount doesn’t grow two decimals it never had.

    • Eight decimals for bitcoin, two for the euro, none for the yen
    • A satoshi or gwei line under small crypto amounts
    • Extra places for sub-cent tokens, set per asset
    • The collection assistant fills the decimals field across every row

  • A page for every pair

    Readers search for the pair, not for a tool. Each record in the pairs collection binds to its own page and slug with preset amounts, an editor’s note and a small table of that asset against the currencies your audience uses.

    • Pair pages such as /convert/btc-to-eur, generated from the collection
    • Preset amounts under the field, so one tap answers the usual question
    • A rates table of one asset against your top currencies
    • Saved views that sort pairs by how often readers convert them

  • An embed other sites can load

    Next to the full page, the app serves a bare converter sized for an iframe, carrying the rate source, the fetch time and the indicative-rate line. Each partner is a record holding its domain, its pairs and its accent color.

    • One embed route on your own domain, with SSL handled
    • Per-partner pairs, default amount and color kept as records
    • Only domains on your embed records get a working widget — others get a link out
    • Partners sign in to copy their own snippet
Data model

The collections behind it

Netiva keeps your records in built-in collections. Here’s a starting structure — the agent adapts it to your prompt, and you can change it any time.

Assets

Every coin, token and fiat currency your converter knows about.

  • Name (required) Text
  • Symbol (required) BTC, ETH, USD, JPY — shown to readers, never used for lookups Text
  • Kind (required) Crypto or Fiat Text
  • Provider ID (required) The ID your rates API uses; tickers are reused across chains Text
  • Display decimals (required) 8 for BTC, 2 for USD and EUR, 0 for JPY Number
  • Display sub-unit The sub-unit to print under small amounts: satoshi for bitcoin, gwei for ether Text
  • Reference rate What one unit is worth in your reference currency Number
  • Rate fetched at Date & time

Pairs

The conversions that get their own page and a place in the menu.

  • Pair name (required) BTC to EUR — the page title, the menu label and the source of the slug Text
  • From asset (required) Relation to Assets
  • To asset (required) Relation to Assets
  • Intro Editor’s note above the converter Paragraph
  • Preset amounts 0.5, 1, 100 — the buttons under the amount field Text
  • Table currencies The assets this page’s rates table values against — empty uses your default set Relation to Assets
  • In menu Yes or No Text
  • Conversions this month Written back by the scheduled job from the conversion log Number

Embeds

One record per site that loads your converter.

  • Site name (required) Text
  • Domain (required) The host allowed to load this embed Text
  • Default pair Relation to Pairs
  • Allowed pairs Leave empty to offer every listed pair Relation to Pairs
  • Accent color Hex value used for the button Text
  • Contact email (required) Text
  • Status (required) Active or Paused Text

Conversions

A line per conversion, so editors can see what readers actually ask.

  • Converted at (required) Date & time
  • From asset (required) Relation to Assets
  • To asset (required) Relation to Assets
  • Amount (required) Number
  • Rate used (required) Kept on the row so an old result can still be explained Number
  • Result (required) Number
  • Opened from (required) Converter page, pair page or embed Text
  • Embed Relation to Embeds

Required field. Types are Netiva collection field types.

Screens

Pages and screens to start with

A typical first version. Ask the agent for more, or annotate the preview to change any of them.

  • Converter

    The full converter: an amount, a from asset and a to asset, a swap button, preset amounts and the rate, its source and the fetch time under the result.

    Public

  • Pair page

    One page per listed pair, such as btc-to-eur, with the editor’s note, preset amounts and a rates table for that asset.

    Public

  • Rates table

    Every listed asset in one table, valued in the currencies you choose, sortable by name or value, with the time of the latest refresh.

    Public

  • Embed view

    A bare converter with no site navigation, sized for an iframe, naming the rate source, the fetch time and the indicative-rate line, with a link back to the full page.

    Public

  • Partner console

    Partners sign in, pick the pairs their widget offers, set an accent color and copy the snippet for their own site.

    Signed-in users

  • Pair demand

    For editors: the pairs readers convert most, the ones with no page yet and any asset whose reference rate has gone stale.

    Your team
How it works

From prompt to a live crypto converter

  1. List the assets you convert

    Tell Netiva which coins, tokens and fiat currencies you cover and which one is your reference currency. The agent drafts the assets, pairs, embeds and conversions collections and a first converter screen.

  2. Point it at your rates feed

    Describe your rates provider’s endpoint and store the key securely, then set the refresh interval and how long a rate may sit before the app marks it stale.

  3. Check the arithmetic in the preview

    Type amounts you already know, one BTC and 100 units of your own currency, and read the result. Annotate the preview to move the swap button or change how a tiny amount is rounded.

  4. Publish, then hand out the embed

    Publish to your domain, link pair pages from the articles that raise the question and give partner sites their snippet. Every later change is checkpointed, so a bad edit rolls back.

Why Netiva

Netiva vs a traditional build

Building a crypto converter with Netiva compared with a traditional build
Criterion With Netiva Traditional build
Converting a pair Your own converter, with the assets you choose and the rate source named beside the result A vendor’s widget that shows its own coin list and links readers back to its site
Putting it on other sites One embed route inside the same app, with each partner’s pairs and color kept as a record A separate script a developer builds, hosts and redeploys for every color or pair change
Getting started Describe what you need in chat and watch it take shape in a live preview Hire developers, or stitch together templates, plugins and a hosting plan
Content and data Built-in collections with nine field types, bound straight to your pages Set up and connect a separate database or CMS
Making changes Ask the agent; every change is checkpointed and reversible File a ticket, wait for a sprint, redeploy
Hosting and domain Global hosting and automatic SSL; connect a custom domain from the Starter plan Buy hosting, then install and renew SSL certificates yourself
Code ownership Clean production code you own and can export Locked into a template, plugin or agency setup
Examples

Ways teams use it

  • A crypto guide site

    Guides end on the same question, so each one links to the pair page it raises. After a month the editors can see which conversions readers actually run, and they write the two pages that list is missing.

  • A community site outside the dollar zone

    Members think in their own currency, so the converter opens on it while the reference rate stays in dollars. Currencies with no minor unit show whole numbers, which ends the trailing decimals members kept pointing out.

  • A token project’s help pages

    A small project shows what its token is worth in fiat and in the gas asset of its chain, with a gwei line for network fees. The same widget sits in the docs and on two partner sites.

Good to know

Before you build

  • A cached rate has a shelf life

    A rate refreshed every two minutes suits a guide page and nothing time-critical. Decide how old a rate may get before the app flags the pair instead of showing it, and remember that a weekend or a provider outage can freeze a fiat rate while crypto keeps moving.

  • You bring the rates feed

    Netiva doesn’t supply rates. You pick the provider, hold the key and follow its terms on attribution, caching and redistribution — feeding other sites needs its own permission. Check both sides: a thin token, or a fiat your provider won’t quote, means a second feed and key.

  • Converting is not exchanging

    Showing a rate is one thing; swapping assets or taking money is a regulated service: in the EU through a provider authorized under MiCA, elsewhere through one licensed or registered locally. Linking to a venue, or publishing your own token’s value, can count as marketing.

  • What an embed actually costs

    An embed serves from your app and your hosting, not from a fresh provider call, so the scheduled refresh stays your only call to the API. It runs on your own domain, which needs the custom domain connection from the Starter plan, and only listed domains get the widget.

Compliance note

Netiva builds the converter web app only. It doesn’t mine, hold or move funds, swap assets or place trades, and it gives no investment advice. Rates come from the provider you choose and are indicative figures, not an offer to buy or sell at that price — say so beside the result and inside every embed. Anything that actually exchanges assets or takes a reader’s money belongs with your own licensed provider, reviewed by counsel in each country you publish to.

FAQ

Questions about building a crypto converter

Do I need my own rates API for a crypto converter?

Yes. Netiva builds the app; the numbers come from a market-data or foreign-exchange provider you pick, and your key is stored securely. The app calls that API on a schedule and saves one reference rate per asset, so a busy page doesn’t spend a call per visitor. Read the provider’s terms on attribution and call volume before you publish.

How does the app convert one coin into another?

Every listed asset keeps a rate against a single reference currency, usually the dollar. To go from one asset to another, the app divides the first rate by the second, so any combination works without a dedicated feed for it. The result names the reference currency and the time of the refresh, and a pair that rests on a stale rate is flagged instead of shown.

How many decimals should each currency show?

Set it per asset. ISO 4217 gives each fiat currency a minor unit — two decimals for the dollar and the euro, none for the yen, three for several Middle East and North African currencies, among them the Kuwaiti, Bahraini, Jordanian and Tunisian dinars. Crypto has its own scales: a bitcoin is 100,000,000 satoshis and an ether a billion gwei. Store the decimals and the sub-unit on the asset record, and give sub-cent tokens extra places.

Can other sites embed the converter?

Yes, if you ask for it. The finished app serves a bare converter route with no navigation that another page loads in an iframe, and each partner site is a record holding its domain, its pairs and its color. You describe that in plain language, with no coding required, though you can open the editor and adjust the generated route yourself.

Will the converter show the rate a reader would actually get?

No, and it shouldn’t pretend to. A converter reports a reference rate at a moment in time. An exchange adds its spread and trading fee, a card purchase usually adds more, and moving coins costs a network fee that changes by the minute. Label the result as indicative, show the source and the fetch time, then link to whoever the reader would trade with.

Can readers convert a pair at a past date?

If your provider has a historical endpoint, yes: add a date field and the app looks up that day’s close for both assets, then divides as usual. State which time zone the close belongs to, because a daily candle cut at midnight UTC and one cut in local time give different answers for the same date.

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Drafted with AI assistance from Netiva’s product pages and reviewed by the Netiva team. Example data models, screens and prompts are illustrative starting points, not customer projects.

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