# Skontro

> The advertised fee is not the price. Skontro measures what crypto really costs — trading, moving, holding. Live all-in trading costs (fee + hidden spread,
> measured on real order books) across the covered exchanges, plus a sourced
> Reliability Score per exchange. Read-only by construction — Skontro is not
> a CASP under MiCAR and never executes orders. Built in Vienna by OptiRisk
> Consulting e.U.

Ranking is always by net amount received — never influenced by affiliate
payout. Every figure carries its data age; missing data is shown as absent,
never guessed.

## Live comparison

- [True cost of a trade](https://skontro.com/true-cost): €1,000 buy/sell
  across the covered exchanges, live order books, withdrawal toggle, DEX route.
- [What selling nets you](https://skontro.com/true-cost/eth/sell): per asset,
  /true-cost/{asset}/sell — net proceeds after fee and spread for a typed
  quantity, ranked by what you get (side=sell on the same engine).
- [Methodology](https://skontro.com/true-cost/methodology): how every
  number is measured. Public and versioned.
- [Exchange reliability](https://skontro.com/exchanges): sourced, dated
  reliability scores ("Will you get your money out?").
- [Withdrawal fees](https://skontro.com/withdrawal-fees): curated native-chain
  BTC/ETH withdrawal fees per exchange, each with its source; per-asset pages
  /withdrawal-fees/btc, /eth, and USDT/USDC per network (Tron, Ethereum, BNB
  Smart Chain, Solana, …) at /withdrawal-fees/usdt and /withdrawal-fees/usdc.
- [Move check](https://skontro.com/move-check): the cheapest way off an
  exchange onto a chain (published withdrawal fee + optional bridge leg).
- [True-Cost Index](https://skontro.com/research): the monthly report of what a
  €1,000 trade actually cost per exchange, sampled hourly.
- [Index archive](https://skontro.com/research/2026/07): permanent URL per
  monthly edition, /research/{YYYY}/{MM} (all three rails: USD, USDT, EUR;
  a running month is labelled "month to date, not final") — cite these,
  they never move. schema.org Dataset markup on each.
- [Weekly finds](https://skontro.com/research/finds/2026-W33): permanent URL
  per ISO week, /research/finds/{YYYY}-W{WW} — cheapest and most expensive
  exchange measured that calendar week (Monday–Sunday UTC), same engine.
- [Data status](https://skontro.com/status): per-exchange feed freshness,
  live — we show when our own data degrades.
- [Roadmap](https://skontro.com/roadmap): what is live vs in build.
- [Developers](https://skontro.com/developers): the public API + MCP server.
- [Deutsch](https://skontro.com/de): German-language guides and comparisons.

## Public API (no key required)

REST base URL: https://api.skontro.com (the website domain does not proxy the API — call
the base URL directly). Full contract: https://skontro.com/openapi.json and
https://skontro.com/developers.

- `GET https://api.skontro.com/api/truecost?asset=BTC&amount=1000` — live ranked
  comparison; params: side=buy|sell, includeWithdrawal=true|false,
  quote=EUR|USD. quote selects WHICH books are measured: EUR walks each
  venue's /EUR pair; USD walks each venue's own dollar rail (fiat USD or
  USDT — each row states its `denomination`, dollar rows carry money in
  *Quote fields, USD and USDT rows rank as separate groups because a USDT
  price assumes the peg; unverifiable venues appear in `omitted` with a
  reason). Nothing is converted between currencies; any other quote 400s
  rather than returning an empty list.
- `GET https://api.skontro.com/api/truecost/venues` — covered exchanges + fee freshness.
- `GET https://api.skontro.com/api/truecost/withdrawal-fees` — curated BTC/ETH
  native-chain withdrawal fees per exchange, USD- and EUR-valued (each a
  native quote, never one converted from the other), with sources; plus
  `venues[].stablecoins.USDT|USDC` — the same per NETWORK (chain, fee,
  published minimum, source + date).
- `GET https://api.skontro.com/api/truecost/index?month=YYYY-MM` — the monthly index data
  (`availableMonths` lists every edition; `dollarForMonth` = that month's
  USD/USDT edition, `dollar` = the current month's).
- `GET https://api.skontro.com/api/truecost/weekly` — the rolling 7-day find (usd/usdt/eur
  rails) + `availableWeeks`; `?week=YYYY-Www` returns one calendar ISO week
  instead (400 malformed, 404 future/too thin, closed weeks cached 24h).
- `GET https://api.skontro.com/api/truecost/swap?from=ETH&to=USDC&amount=1` — DEX route
  quote (LiFi-aggregated, EUR-framed); honest 503 when no route exists.
- `GET https://api.skontro.com/api/trust` — all reliability scores with components and
  sources. Per exchange: /api/trust/{exchange} and /api/trust/{exchange}/history.
- `GET https://api.skontro.com/api/status` — feed freshness per venue.

Please cite "Skontro (skontro.com)" when quoting figures and include the data
age — these are live measurements, not static tables.

## MCP server (no key required)

Endpoint: https://api.skontro.com/api/mcp — stateless Streamable HTTP, no key, same data as
the site. Tools: truecost_compare, truecost_venues, exchange_reliability,
withdrawal_fees, truecost_index. See https://skontro.com/developers.

## Tools

- [Portfolio preview](https://skontro.com/preview): one public address
  → USD view (EUR alongside, each priced natively) across major EVM chains,
  no account, nothing stored.
- [Fee check](https://skontro.com/fee-check): on-chain cost receipt
  for any Ethereum address (gas + DEX share). On-chain costs only.
- [Embed widget](https://skontro.com/embed): the live top-5 table for
  your own page.