Fivebar x402 Index · Robinhood Chain and Base · public on-chain data

How much x402 spend is real?

Name: Fivebar x402 Index
Creator: Fivebar

Every x402 payment on Base and Robinhood Chain, read from the chain and run through a wash screen. Most of the volume people quote fails it. This page shows what is left, updated every 3 hours.

Settled, last 7 days–

Passed the wash screen–

Agent spend (under $1 each)–

Washed out–

Loading the index…

Settled per day

UTC days

Passed the screenRemoved as wash

Agent spend per day

Passed and under $1 a payment

Sub-dollar payments that pass the screen are the closest public measure of agents paying for services. TRM Labs uses the same line.

Robinhood Chain

USDG · chain 4663 · new

Settled–

Passed the wash screen–

Agent spend (under $1 each)–

Washed out–

Robinhood Chain is new to the index. Days fill in as the job runs every 3 hours.

See every agent on Robinhood Chain, its record and whether the screen flags it →

Same method as Base, on USDG: transferWithAuthorization payments called directly on USDG, each UTC day screened on its own. Rails that settle through Permit2 or other contracts are not counted yet. data/robinhood/daily.json

Why volume was removed

Last 24h

How it settled

Last 24h

Route	Payments	Volume	Passed

Direct: the facilitator calls USDC itself. A router is a contract that settles batches of x402 payments.

Check a seller

Last 24h

Biggest sellers by raw volume	Volume	Buyers	Top 2 wallets	Verdict

Method

Screen v1

What counts. USDC transferWithAuthorization payments (EIP-3009, how x402 settles) sent to USDC directly or through a known x402 router. Smart-wallet bundles and DEX routers are left out.
The screen, run on each UTC day on its own: drop self-payments, sellers with fewer than 10 buyers, sellers where two wallets pay over 90% of the volume, and circular pairs (A pays B and B pays A). This follows TRM Labs’ x402 study.
Agent spend is what passes and is under $1 a payment.
What it misses. A ring of wallets paying many sellers can pass. Treat “passed” as an upper bound, not proof.

Data and API

Free to use

Every figure here is a public JSON file, rebuilt every 3 hours. Use them freely; credit “Fivebar x402 Index”.

data/daily.jsonone row per UTC day
data/screen.jsonevery seller’s verdict, last 24h
data/stats.json24h totals, routes, hourly
data/agents.jsontop paying wallets and scores
data/robinhood/daily.jsonRobinhood Chain, one row per UTC day
data/robinhood/stats.jsonRobinhood Chain, last 24h

Screening API, coming next. GET /v1/screen/seller/{address}, GET /v1/screen/wallet/{address} and POST /v1/screen/payments for facilitators, launchpads and anyone checking whether x402 volume is real. Want early access? DM @fivebar_xyz.