Which is the biggest x402 facilitator?

By transaction volume, Dexter is the largest x402 facilitator as of mid-2026 (roughly half of tracked x402 transactions per Signal402 data), ahead of Coinbase CDP. Dexter is Solana-native with Base support. Volume leadership does not imply EUR settlement or compliance capabilities — Dexter settles in stablecoins on-chain only.

Can Dexter settle payments in euros?

No. Dexter settles in stablecoins on-chain (Solana and Base). If a merchant needs EUR in a bank account, they must run their own off-ramp. AsterPay settles EUR via SEPA Instant to the merchant's IBAN in under 10 seconds, at 0.5% + €0.10 on the EU rail.

Do Dexter and AsterPay compete?

Partially. Both are x402 facilitators, but they serve different workloads: Dexter dominates high-frequency crypto-native agent traffic, especially on Solana. AsterPay serves EU merchants who need fiat settlement, agent trust screening and a MiCA-aligned compliance posture. A stack can use both and route per request.

← All comparisons

AsterPay vs Dexter — honest comparison

Updated 15 July 2026 · 5 minute read · By Petteri, Co-founder

Short answer Dexter is the highest-volume x402 facilitator — roughly half of tracked x402 transactions, Solana-native, deeply embedded in agent frameworks. If you want raw crypto-native throughput, Dexter has earned the default slot. AsterPay plays a different game: EUR to an EU merchant's bank via SEPA Instant, per-call agent trust screening (KYA), and a MiCA-aligned compliance posture. Dexter has none of that, and doesn't claim to. Pick by workload, not by market share.

What each one is

Dexter is a crypto-native x402 facilitator that rose to the top of the volume charts in 2026, driven by Solana-native settlement (with Base support) and agent-to-agent payment routing. Its distribution advantage is structural: Dexter is preconfigured as the default facilitator in several agent frameworks, so builders use it without ever making a vendor decision. Settlement stays in stablecoins on-chain.

AsterPay, operated by AELIRA LTD (Cyprus), is the EU-native x402+MPP facilitator with fiat settlement: USDC/EURC in, EUR to the merchant's IBAN via SEPA Instant in under 10 seconds. Every payment passes KYA trust scoring (0–100, ERC-8004 identity, sanctions screening) before settlement. Facilitation itself is free forever; AsterPay charges 0.5% + €0.10 when euros reach the bank.

Side-by-side comparison

Capability	Dexter	AsterPay
x402 transaction volume	#1 tracked facilitator (~50%)	Small in comparison
Primary chains	Solana (native), Base	Base (primary), Ethereum, Polygon, Arbitrum, Optimism
Settlement currency out	Stablecoins, stays on-chain	EUR via SEPA Instant (<10 s)
Agent trust screening (KYA)	No	Per-call, 0–100, ERC-8004 + sanctions
MPP support	No	Native alongside x402
EU compliance posture	None claimed	MiCA-aligned via licensed partners, KYB, Travel Rule
Agent-to-agent routing	Yes, a core feature	Via MPE merchant discovery
Framework distribution	Default in several agent frameworks	MCP server, SDKs, directories
Facilitation fee	~0.1–0.5%	$0 forever
Fiat settlement fee	n/a (no fiat)	0.5% + €0.10 (EU rail)

Where Dexter wins

You are Solana-native — Dexter is the obvious facilitator there
You want the highest-throughput, battle-tested facilitator for crypto-in, crypto-out flows
Your framework already ships with Dexter configured and you have no fiat or compliance requirement
Agent-to-agent payment routing is central to your product

Where AsterPay wins

You are an EU merchant who needs euros in a bank account, not stablecoins in a wallet
Your finance or legal team requires KYB, sanctions screening and a MiCA-aligned settlement path
You want the paying agent vetted per call (KYA trust score) before money moves
You need both x402 and MPP accepted on the same endpoint
You want facilitation free, with fees only on fiat settlement

The honest lesson we take from Dexter

Dexter didn't win by out-marketing anyone — it won by being preinstalled. When an agent framework ships with a default facilitator, most builders never revisit the choice. We consider that the single most important distribution lesson in the x402 ecosystem, and it is why AsterPay publishes an MCP server, framework templates and machine-readable manifests rather than relying on merchants finding a landing page. On pure crypto-native volume, Dexter deserves its lead. The EUR-settlement and compliance workload is a different race, and it is the one we run.

Bottom line

Crypto-in, crypto-out at maximum volume, especially on Solana → Dexter. USDC in, EUR in an EU bank account with trust screening and compliance → AsterPay. The two barely overlap today; sophisticated stacks route per request.