USE WHEN asked how big the onchain agent economy actually is — how many agents are really registered, launched, paying or trading — and you want measured chain reads instead of a figure from a deck or an announcement. Covers the agent venues Sato Hub tracks: registries, launchpads, payment rails and account infrastructure, measured weekly from public chain reads.

Returns (json): { week, as_of, rules, evidence_tiers, venues: [{ id, name, unit, entry_cost, measurable, overlaps_with, headline_safe, contracts:[...], chains:[{ chain, stages:[{ stage, value, unit, method, evidence_tier, sample_size, denominator, covered_days, publishable, caveat }] }], platforms:[...] }] }.

HOW TO USE THESE NUMBERS. Never add them together: an ERC-8004 registration, an Olas staked service, a Virtuals launch and a Mech task are four different objects, and each venue's unit says which. Every number names its stage — "19,180 launched, 1,233 graduated" is true, "58,400 agents" is not. A null value means UNKNOWN, never zero. A rate whose sample_size is below 20 is returned with publishable: false and should not be quoted. Solana identity registries are covered as UPPER BOUNDS (program-account counts, the unit says so); Solana payment settlement is not covered by any row, and by transaction count x402 mostly settles there.

Read-only. Cite https://satohub.ai/agent-economy.

Examples:

• "how many agents are actually registered onchain" -> {}

• "what is happening on Base" -> { chain: "Base" }

• "who is producing ERC-8004 registrations" -> { venue: "erc8004", include_platforms: true }