A metered read on x402 Bazaar: observed USDC money flow, daily movement, new entrants, category pressure, and payTo change alerts. Every output names its table, its real observation window, and its blind spots.
Agent catalogCoverage & statusDaily state of the x402 agent economy: observed USDC inflow, seller ranking, category demand, growth, and coverage. Reports its real observation window; concentration adjustment applied only when scan coverage supports it. A FREE register-wide change digest covering the same domain is market_digest on the x402-observatory gateway; buy this for the derived figures, not for what merely changed.
Leaderboard of x402 sellers by observed USDC inflow, with distinct payers, an HHI concentration measure and wash-risk flags. Sellers below the observation floor are returned unrated, not accused. The payer-graph discount applies only where wallet scan coverage supports it. HHI measures concentration, not common control.
Services whose inbound USDC transfer count and inflow are growing across comparable daily windows. The response states how many calendar days of history actually back the comparison. Use this to spot rising demand early. Growth is measured on observed on-chain transfers, not on self-reported revenue.
x402 services first listed since a given date, with first archive observation and early-traction evidence from observed inflow. Entrants MCPFax can attribute — a declared payTo, an observed title, or observed inflow — rank first, and each row says which it carries. A window identifying nobody is refused 422 and charges nothing. Requests before the archive's first date are partially covered.
Unmet-demand finder: compares observed USDC spend against how many sellers actually serve each category, with recent momentum where a real prior window exists. The payer-quality component is applied only when wallet scan coverage supports it. Use this to decide what to build — categories with high spend and few suppliers are the gaps.
Early-warning feed of sudden daily inflow spikes plus strictly qualified first-window large-payer signals. The response states the nominal baseline window and how much of it is actually held. Use this to catch an abrupt change in a service's payment activity within a day.
Pay per call — these are the only prices on this page, and every one of them is live. Successful calls settle exact native USDC on Base. Unpaid calls return a machine-readable 402 challenge. The same six products are exposed as paid MCP tools at POST /mcp.
Inflow means incoming Base USDC Transfers to a declared payTo. It is not balance, audited revenue, or guaranteed x402-only flow.
A seller below the observation floor, or with no payer rows at all, comes back unrated. Absence of data is never published as a risk verdict about a host, a wallet, or a payer.
Scan coverage, the real first observation date, and the actual number of calendar days held ship in every response. The wash adjustment is suppressed, and never ranked on, until scan coverage supports it.
Live coverage figures: /health.