x402scan
An independent, public analytics explorer for the x402 payment protocol — the primary source for tracking on-chain machine-payment volume, transaction counts, and active agents.
Rail: Payment · Updated: 2026-07-09
What It Is
x402scan is a public, on-chain analytics service and explorer for activity on the x402 payment protocol. It indexes x402 settlement transactions and publishes ecosystem-level statistics — total on-chain settlement volume (denominated in USDC), cumulative transaction counts, counts of unique active buyers and sellers, and per-facilitator and per-resource breakdowns. It primarily indexes activity on the Base and Solana blockchains, where sub-cent fees and fast finality make machine micropayments viable; Base has historically accounted for the large majority of tracked traffic.
x402scan is operated by Merit Systems, Inc., independently of Coinbase (which originally created the x402 protocol before it moved to Linux Foundation governance). It is designed with a machine-first architecture — offering programmatic access through REST, agent-to-agent, and Model Context Protocol endpoints so that autonomous agents can discover services and verify that a payment settled, without logins or API keys.
Because x402scan derives its figures from public on-chain data rather than proprietary or self-reported sources, the values it reports can be independently reproduced from the underlying blockchains.
Why It Matters for the Machine Economy
x402scan is a primary data source for measuring on-chain machine-payment activity — it makes x402 settlement volume, transaction counts, and active-agent counts auditable directly from public ledger data. An independent, reproducible analytics source is precisely what makes machine-payment volume measurable at all: without a public accounting of on-chain settlement, the size of the on-chain payment layer would be a matter of claims rather than verification.
One caveat has to be stated honestly. x402scan's native figures are gross on-chain volume — they are not filtered for wash trading or bot activity, and independent analysts have found that a large share of raw x402 volume in peak periods was inorganic (self-transactions and cyclical routing that inflate leaderboards). Gross and quality-adjusted figures can differ by more than an order of magnitude. MachineEconomy.ai therefore treats x402scan's gross volume as a verifiable, same-basis input and discloses wash concentration as a risk, rather than presenting gross volume as if it were all organic commerce.
Real-World Example
To measure a period's on-chain machine-payment activity, one reads x402scan's trailing-30-day settlement volume and transaction count for the x402 protocol — figures anyone can recompute from the underlying Base and Solana transaction data, since x402scan is reporting public on-chain settlements rather than private records.
Current Status
As of mid-2026, x402scan tracks millions of cumulative x402 transactions and settlement volume denominated in USDC, with the majority of indexed activity concentrated on Base. Reported figures are dynamic and reflect a mix of organic and inorganic activity.
Related Terms
- x402 Protocol — the payment protocol x402scan tracks
- Base — the network hosting most indexed x402 activity
- USDC — the settlement asset x402 volume is denominated in
- Quality-Adjusted Transaction Volume — why the platform discloses wash risk rather than treating gross volume as organic