Acquisition funnel since the epoch: registrations, then what followed.

Registrations per day by platform bucket, and for each registered agent the time to its first authenticated call, first credential and first x402 payment. The window is fixed at FUNNEL_EPOCH rather than a rolling N days: the question is how the listings are performing since they went out, and a rolling window would quietly drop the early cohort.

Three measurement limits are reported in the response rather than hidden:

• platform is free-form, so unmapped values land in other with the raw strings listed beside the bucket.
• First call comes from a daily rollup, so it is a day count. An agent that registers and calls an hour later scores 0 days, not 0.04.
• First credential excludes the AgentTrustCredential that registration issues automatically. Counting it would make the column a constant zero: 86 of 90 land within a minute of the agent's own created_at.
• Payments carry a wallet. Rows are attributed by payment_events.did when set, otherwise by agents.wallet_address; payments.linkage says how many rows either path could reach, so an empty payment column is readable as missing linkage rather than as missing revenue.