Where does x402 money go: which chains and which kinds of API?

In P0's demand metrics of 2026-10-25, the 841,517 paid x402 calls of the last 30 days add up to an estimated $14,720 of API-sized spend (listed up to $1 per call), 93.8% of it on base; counting every listing, whatever its price, the estimate is $88,595.

Data as of 2026-10-25 · Source: P0 demand metrics: Coinbase CDP x402 Bazaar catalog (public) and P0 on-chain scans (2026-10-25)

The numbers

Listed services in the metrics: 49,560
Paid calls, trailing 30 days: 841,517
Estimated spend, API-sized listings (up to $1): $14,720
Estimated spend, all listings: $88,595
Share of that estimate in the five biggest resources: 83.3%

By chain (sorted by API-sized spend)

Chain	Share of listings	Share of API-sized spend	Estimated API-sized spend	Paid calls
base	98.6%	93.8%	$13,804	788,544
solana	1.3%	6.2%	$905.82	52,558
arbitrum	0%	0.1%	$7.7	28
eip155:5042	0.1%	0%	$0.79	97
eip155:56	0%	0%	$0.64	64

By tag (sorted by API-sized spend; a service counts in each of its tags)

Tag	Listings	Estimated API-sized spend	Share of API-sized spend	Paid calls
agents	528	$4,363	29.6%	219,300
token	387	$4,353	29.6%	217,580
verdict	39	$4,328	29.4%	216,354
ai	21,653	$1,645	11.2%	152,883
llm	424	$1,129	7.7%	116,971

The full answer

/spend - $0.002 per call: spend and spend share per chain and per tag, average price per paid call, on-chain USDC transfers to listed payTo addresses
/concentration - $0.002 per call: demand concentration per tag
/retention - $0.002 per call: do buyers come back: repeat-payer rates and cohorts

Paid routes answer HTTP 402 with the payment requirements until paid over x402 or MPP (no account or key); see how to pay, pay without a client, OpenAPI. The figures on this page are also at ?format=json.

How this was measured

Estimated spend = the price a service lists x its paid calls in 30 days. Sellers may charge less than they list, and variable-amount routes list their maximum, so this is an estimate, not settled revenue.
Calls are paid outcomes (facilitator-recorded settlements); unpaid attempts cannot be seen in public data. Non-USD assets are counted as payments but not in USD sums.
The all-listings estimate is dominated by a few high-priced listings (goods purchases, not API calls), which is why the API-sized figure is shown first.