P0 Agent Economy Index

underserved niches: categories ranked by paying wallets per provider, with median price

Use when you need what changed in the x402 Bazaar: new listings, dropped (no longer listed) routes, top movers by 30-day unique payers, trending tags, and deltas of catalog totals (resources, sellers, calls, payers) vs our snapshot nearest 24 h and 7 days earlier, with the real gap in hours. Built from snapshots of the public Coinbase CDP x402 Bazaar catalog, with as_of and a stale flag. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Use when you need demand concentration in the x402 Bazaar: for each tag, the share of its 30-day paying wallets held by the top-1 and top-3 services and by the top seller, HHI, zero-payer services, and summed payers stated as an upper bound. Optional ?tag= for one tag. $0.002 USDC per call.

catalogue size and 30-day totals: services, calls, unique paying wallets, with the snapshot hash

complete dataset export: every listed service with 30-day calls, unique payers, price, network (compact keys, legend included)

premium full export of one snapshot: every listed service with 30-day calls, unique paying wallets, price, network, tags and its demand rank overall and within its top tag; per-seller (host) aggregates; per-category summaries (providers, payers, calls, median price); snapshot metadata and a legend; compact JSON

Use when you need one report on a domain: DNS records (A, AAAA, MX, NS, TXT, CAA) with SPF and DMARC parsed, RDAP registration for .com, .net and .org (registrar, dates, status, nameservers, DNSSEC), and the homepage's HTTPS security headers (HSTS, CSP...) with HTTP-to-HTTPS redirect and rule-based findings. Sections not answered are marked. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Use when you need the agent economy beyond x402 in one call: per protocol (x402, Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 and Solana agent registries, Base agent contracts, MCP registry) the headline services, payments, payers and USD volume with unit, window, source and date. Units differ, so totals are never summed. L402 is not covered. $0.003 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Use when you need one agent-economy protocol in detail: every normalised row (per chain or rail, all-time and 30-day windows) for x402, Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004, Solana agent registries, Base agent contracts or MCP, each with unit, window, source URL and fetch time. Optional ?protocol=. L402 is not covered. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Use when you need callable agent services for a capability across protocols: x402 listings ranked by relevance weighted by 30-day paying wallets, plus hosted MCP servers from the Official MCP Registry (a capped subset, count in coverage; those naming x402, L402, MPP or pay-per-call first; that registry publishes no prices). L402 and MPP listings are not covered. ?q= required. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Use for euro exchange rates: the latest ECB euro foreign exchange reference rates (EUR base, about 30 currencies such as USD, GBP, JPY, CHF, PLN), the publication date, percent change versus the previous ECB publication and a stale flag. Source attribution in every reply. Reference rates for information only, not transaction rates. $0.001 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Use for a short euro exchange rate history: daily ECB euro foreign exchange reference rates of one currency against EUR for up to the last 30 days (ccy=USD, days=1..30), with min, max and percent change over the window and a stale flag. Source attribution in every reply. Reference rates for information only, not transaction rates. $0.002 USDC per call. Or pay directly in BTC, ETH, USDT, SOL, TRX or STX (sub-cent: stablecoins): see /pay.

Highest-demand x402 services tagged 'accessibility': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 51 providers and 55 paying wallets measured in this tag.

Highest-demand x402 services tagged 'agent-builders': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 160 providers and 247 paying wallets measured in this tag.

Highest-demand x402 services tagged 'agent-commerce': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 110 providers and 132 paying wallets measured in this tag.

Highest-demand x402 services tagged 'agent-service': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 1850 providers and 3470 paying wallets measured in this tag.

Highest-demand x402 services tagged 'agent-tool': ranked by 30-day unique paying wallets, with calls, price, network and calls-per-payer for each. 250 providers and 0 paying wallets measured in this tag.