Mercuryo scores 16 points above Koywe, led by purchase cost and KYC and speed. Mercuryo ranks #7 and Koywe #13 of 16 published onramps. Every term of the gap is on the ledger below; the inputs are on the audit receipt.
MEMercuryo57
vs
Koywe41
Scores are out of 100; published scores fall within 41–99 · ranks #7 and #13 of 16
Mercuryo scores 16 points above Koywe, led by purchase cost and KYC and speed.
MEMercuryo #7 of 1657
Koywe #13 of 1641
Scores are out of 100; published scores fall within 41–99; a bar is empty at 41 and full at 99.
Why, term by termMercuryo leads on 2 of 4 published criteria; Koywe on 1. The terms sum to the gap.
TermMercuryoKoyweWeightPoints
Purchase cost5/103/108.2+4.2for Mercuryo+2.2 of 32
Quote honesty4/105/106.2−1.6for Koywe−0.8 of 32
KYC and speed5/103/104.3+2.2for Mercuryo+1.2 of 32
AvailabilityScore dimension12620+15.6for Mercuryo
Net of the terms+20.5
Criteria roundingThe criteria block is rounded to whole points before it is spread+0.1
Reproduced gap+20.5
Published gapAfter score rounding and bounds — see the note below5741+16.0
Weight is in points of the 86-point weighted total. Points are score points of the gap between the two.
A floor bound on one row means the criterion arithmetic does not reproduce the displayed gap exactly.
MercuryoScore 57Multi-entity EU-focused widget rail — EEA crypto flow on Criptan Trade S.L.'s CNMV MiCA CASP (contracting via non-regulated Moneychurros S.L.), non-EEA on a Canadian FINTRAC MSB, UK FCA EMI for the e-money leg only — with a published CAPPED fee schedule (card up to 5.5% min EUR 1, SEPA up to 3% min EUR 2, average 3.95%) but an unquantified embedded spread, a partner-set 0-2% Infrastructure Fee, and a global-ToS rate struck at the execution moment.Strength: Licence identity — 6/10Watch-out: Outside the US the confirm-button number is not contractually binding: the global ToS strikes the rate 'at the execution moment', warns the final price 'may differ from the price specified when placing an order', forbids withdrawing a submitted order, embeds an unquantified spread in the displayed price, and lets each partner surface add a 0-2% Infrastructure Fee — so the same EUR 200 purchase costs materially different amounts depending on which widget integration you met.KoyweScore 41Chilean-anchored LATAM payments and treasury API (Koywe SpA, CMF register N°196; Alerce Argentina SRL, CNV PSAV N°24) whose ONRAMP product converts local-rail fiat (PIX, SPEI, PSE, Khipu) to crypto delivered to merchant-registered external wallets — register-verified licences, but zero public end-user pricing.Strength: Licence identity — 6/10Watch-out: You cannot see a price before you onboard: Koywe is a KYB-gated B2B API, the pricing pages 404, the fee schedule lives 'informadas en la Plataforma' behind login, and the only public number is a non-binding '0.5% - 2%' typical range in the developer docs — a buyer commits to merchant onboarding before learning what the PIX-to-USDC conversion actually costs.
Quick facts
At a glance
1 of 3 rows read the same for both.
FactMercuryoKoywe
PricingSnapshotMercuryo help article "How does Mercuryo calculate the price and fees for my transaction?" (article 30404513537565, last edited 15 July 2026; the HTML page returns HTTP 403 to non-browser clients and was read through the help-centre API, HTTP 200, fetched 29 September 2026). Mercuryo fee: "the fee ranges from 0% to 5.5%, with a minimum of €1 for smaller on-ramp/buy transactions"; Buy on-ramp (cards, mobile pay, alternative payment methods) "up to 5.5%, or min of €1"; Buy on-ramp (bank transfers) "up to 3%, or min of €2"; "Our average service fee is 3.95%." Non-EUR purchases: "an extra fee of 0.25% to 1% applies, depending on the chosen fiat currency". Partner Infrastructure Fee: "Typically ranging from 0% to 2%, never exceeding 5%." Spread: "The spread is embedded in the displayed crypto-asset price during checkout", with no percentage and no named benchmark. Network fee separate, not quantified. Worked example (our arithmetic, not a Mercuryo figure): a EUR 200 card purchase carries a Mercuryo fee of up to EUR 11.00 (5.5 percent cap) plus an Infrastructure Fee of typically up to EUR 4.00 and at most EUR 10.00, before spread and network fee; by bank transfer the Mercuryo fee is up to EUR 6.00 (3 percent cap). The global Terms of Service (mercuryo.io/legal/terms-global, Version 4.7.5) still state a flat buy fee of 3.95%, which does not match this capped schedule.No end-user fee schedule is published. Koywe developer docs "Quotes and exchange rates" (https://docs.koywe.com/en/core-concepts/quotes-and-exchange-rates), fetched 29 September 2026, HTTP 200, give only an integrator-facing typical range: Processing Fee, "All transactions", "0.5% - 2%"; Network Fee "Variable (blockchain fees)"; country-specific taxes on amount and on fee. The spread is acknowledged in the docs' example ("Slightly lower than buy rate (spread)") but not quantified or benchmarked. The pricing routes www.koywe.com/en/pricing and /es/precios still return HTTP 404 (29 September 2026). The Terms ("Fecha de última actualización: 18 de mayo de 2026") put actual fees behind login or contract: "El uso de los Servicios estará sujeto al pago de las Comisiones y tipo de cambio vigentes informadas en la Plataforma o establecidas en la documentación contractual aplicable." No representative purchase can be reconstructed: the quote API needs KYB-gated credentials and there is no public widget.
Asset coverageEditorial——
Region fitSnapshoteurope, us, calatam
From the published criteria
Which should you pick?
ME
Mercuryo
57#7 of 16
Leads
Pick it when
Pick Mercuryo if purchase cost matters most — it scores 5/10 to Koywe's 3/10 there (weight 34).
Strength
Licence identity — 6/10
Tradeoff
Outside the US the confirm-button number is not contractually binding: the global ToS strikes the rate 'at the execution moment', warns the final price 'may differ from the price specified when placing an order', forbids withdrawing a submitted order, embeds an unquantified spread in the displayed price, and lets each partner surface add a 0-2% Infrastructure Fee — so the same EUR 200 purchase costs materially different amounts depending on which widget integration you met.
Koywe
41#13 of 16
Pick it when
Pick Koywe if quote honesty matters most — it scores 5/10 to Mercuryo's 4/10 there (weight 26).
Strength
Licence identity — 6/10
Tradeoff
You cannot see a price before you onboard: Koywe is a KYB-gated B2B API, the pricing pages 404, the fee schedule lives 'informadas en la Plataforma' behind login, and the only public number is a non-binding '0.5% - 2%' typical range in the developer docs — a buyer commits to merchant onboarding before learning what the PIX-to-USDC conversion actually costs.
Self-identify in 10 seconds
Which one is actually for you?
MEMercuryoLeads
Choose Mercuryo if purchase cost matters most
Purchase cost: 5/10 against 3/10 for Koywe (weight 34)
KYC and speed: 5/10 against 3/10 for Koywe (weight 18)
MercuryoScore 57Multi-entity EU-focused widget rail — EEA crypto flow on Criptan Trade S.L.'s CNMV MiCA CASP (contracting via non-regulated Moneychurros S.L.), non-EEA on a Canadian FINTRAC MSB, UK FCA EMI for the e-money leg only — with a published CAPPED fee schedule (card up to 5.5% min EUR 1, SEPA up to 3% min EUR 2, average 3.95%) but an unquantified embedded spread, a partner-set 0-2% Infrastructure Fee, and a global-ToS rate struck at the execution moment.Strength: Licence identity — 6/10Watch-out: Outside the US the confirm-button number is not contractually binding: the global ToS strikes the rate 'at the execution moment', warns the final price 'may differ from the price specified when placing an order', forbids withdrawing a submitted order, embeds an unquantified spread in the displayed price, and lets each partner surface add a 0-2% Infrastructure Fee — so the same EUR 200 purchase costs materially different amounts depending on which widget integration you met.
Koywe
Choose Koywe if quote honesty matters most
Quote honesty: 5/10 against 4/10 for Mercuryo (weight 26)
KoyweScore 41Chilean-anchored LATAM payments and treasury API (Koywe SpA, CMF register N°196; Alerce Argentina SRL, CNV PSAV N°24) whose ONRAMP product converts local-rail fiat (PIX, SPEI, PSE, Khipu) to crypto delivered to merchant-registered external wallets — register-verified licences, but zero public end-user pricing.Strength: Licence identity — 6/10Watch-out: You cannot see a price before you onboard: Koywe is a KYB-gated B2B API, the pricing pages 404, the fee schedule lives 'informadas en la Plataforma' behind login, and the only public number is a non-binding '0.5% - 2%' typical range in the developer docs — a buyer commits to merchant onboarding before learning what the PIX-to-USDC conversion actually costs.
Criterion by criterion
Scorecard
Published criteria · weight in points of 868 of 8 cells scored. Strength is read from the evidence file; the weight is the published one. Methodology
Purchase cost
by 2 of 10weight 8.2 of 86Mercuryo leads
Mercuryo5/10 out of 10
Koywe3/10 out of 10
Quote honesty
by 1 of 10weight 6.2 of 86Koywe leads
Mercuryo4/10 out of 10
Koywe5/10 out of 10
Named licence
weight 5.3 of 86Tie
Mercuryo6/10 out of 10
Koywe6/10 out of 10
KYC and speed
by 2 of 10weight 4.3 of 86Mercuryo leads
Mercuryo5/10 out of 10
Koywe3/10 out of 10
Score dimensions
weights sum to 86
The published score is five dimensions, each weighted for the category. "Published criteria" is the criteria block above; the other four are the engine's own terms — availability, friction, trust record, measured data. Each bar is one side's points out of that dimension's maximum; the weight beside the name is its points of the 86-point weighted total. The published criteria above can fill 24 of the block’s 30. A weight marked “constant here” belongs to a dimension every ranked product in the category holds at the same value: it still counts in the total, and it orders nothing here.
Availabilityweight 20 of 86
Mercuryo12/20Koywe6/20
Mercuryo leads
Published criteriaweight 30 of 86
Mercuryo11.9/30Koywe10/30
Mercuryo leads
Frictionweight 10 of 86 · constant here
Mercuryo2.7/10Koywe2.7/10
Tie
Trust recordweight 8 of 86 · constant here
Mercuryo3.2/8Koywe3.2/8
Tie
Measured dataweight 18 of 86
Mercuryo8.3/18Koywe8.3/18
Tie
Decision rulePublished order
Choose Mercuryo unless the term Koywe leads on is the one you are buying.
Pick Koywe if quote honesty matters most — it scores 5/10 to Mercuryo's 4/10 there (weight 26).
The published order weighs every criterion the same way for everyone. To weigh them your way, run .
From the published order
Next best action
If this isn't your case
Other matchups worth comparing
How you can lose money here, and what the ranking scores
Regulatory failure: no licence where you are, or a forced market exit.
Scored by Whose money-transmission licence is my money riding — and is that entity my counterparty? · 22% (Mercuryo 6/10, Koywe 6/10)
Execution failure: you get a worse price, later, or nothing.
Scored by Is the number on the widget the number that settles? · 26% (Mercuryo 4/10, Koywe 5/10)
Information failure: the number is wrong or bought, or your data leaks.
Scored by How much identity do I surrender before the coins land in my wallet, and how long does that take? · 18% (Mercuryo 5/10, Koywe 3/10)
Not assessed by this ranking: Control failure, Liveness failure, Custody failure, Insolvency failure, Exit failure. A high place says nothing about these; the Methodology tab says what each means.
Also scored, as cost, quality or a summary of several families: What does a €200 purchase actually cost me — by card and by bank, all-in? (34%).
Questions
Frequently asked questions
Mercuryo scores 16 points above Koywe, led by purchase cost and KYC and speed. Published scores, out of 100: Mercuryo 57 (rank 7 of 16 onramps), Koywe 41 (rank 13 of 16).
Reviewed means both products compared here was read against its sources on or after that date; every ranked category is re-read at least every 45 days. Models research, extract and parse. A deterministic engine ranks. Every quote passes an adversarial refute pass.
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