| says | Yes | The reading in one sentence. An endpoint we have never probed says so here: that is our gap, not evidence the service is down. | |
| drift | No | Declared but not observed, and the reverse. Null where either side is unknown — subtracting silence would manufacture a finding. | |
| price | No | The seller’s OWN published terms for this URL: `amount` in the asset’s own units with `asset` named beside it (a bare number would be read as dollars), `network` as CAIP-2, `payTo`, which catalogues list it, and `cardPriceUsd` where the registration states a price too. Null throughout is UNPRICED, which is not free. Where the card and the catalogue disagree, both are shown — two claims by the same party, and picking one would hide that. | |
| latest | No | The most recent probe: outcome, latency, and what it answered with. | |
| changes | No | Every move we saw in what it offers, oldest first, each with `added`, `removed`, a protocol-version move where there was one, and the two hashes. `at` is the day we SAW the change, not the day it happened: we probe daily and cannot place it more precisely. An empty array where we read a list and it never moved; a tool list we could NOT read is skipped entirely rather than folded in as an empty one, which would invent a “removed everything” out of our own gap. | |
| history | No | Up to fourteen readings. One bad day and a dead service look identical in a single reading. | |
| endpoint | No | The URL as we read it back, so a typo is visible before anything is concluded from the answer. | |
| manifest | No | What the endpoint offers NOW, as something you can bind to: `hash` over the sorted tool names and the declared protocol version and nothing else, with `tools`, `firstSeen`, `lastSeen` and how many readings carried it. Store the hash and compare it on your next call to know whether the offering moved under you. Null where we have never read a tool list here. | |
| measured | No | What we measured, which is NOT a guarantee: nothing on these rails publishes one. `serving` of `days`, every outcome by how often, and median and worst latency of the readings that answered. Left as counts with the denominator stated, never a rate and never a grade — 12 of 14 over two weeks means something different from the same fraction over two days, and only the caller can pick the denominator that matters to them. | |
| outcomes | No | What each outcome word means, so a caller never has to guess. | |
| handshake | No | Whether the protocol HANDSHAKE completed without credentials on the latest reading. `open` is the closest thing here to “you can try it” and is NOT a statement that calling its tools is free — a server can answer openly and charge for every call, and we complete a handshake rather than call a tool. `gated` means it asked for something we do not have, which is working as intended. Null where we have no reading. | |
| declaredBy | No | Identities that declare this endpoint, and the tools each one claims. Their claim, not our verification. | |
| unpaidProbe | No | OUR OWN unpaid x402 handshake with this URL, which is the free availability test for an endpoint no agent registered. x402 requires a server to answer an unpaid request with 402 and its requirements BEFORE doing any work, so the first half of every real client’s handshake costs nothing and proves three things: the host is there, it still speaks x402, and what it asks for NOW. `outcome` is one of quoting, open, refusing, gone, error, unreachable — `open` means it answered 200 unpaid, so it is up and not charging on this path. `quoted.amount` is in the asset’s own smallest unit and is NOT scaled to dollars, because nothing in the requirements document says how many decimals the asset has. Read it beside `price`, which is what the catalogue recorded whenever that entry was written; a price that has moved is a finding neither one shows alone. Null means we have not run this probe here, which is not a finding about the endpoint. | |