buy catalog derived
underground.substratesymposium.comMarket dataderived
GET https://underground.substratesymposium.com/buy/catalog
passlisted in Coinbase#1 by calls of 4 on this host
0.01 USDC
per call, as the listing declares it on eip155:
- Validation state
- pass
- Uptime, 7 / 30 / 90 days
- 100% / 100% / 100%
- Calls, trailing 30 days
- 2
- Unique payers, trailing 30 days
- 1
- Last called
- 2026-08-29 02:05 UTC
- First observed by TOLLderived
- 2026-09-10
- Pricederived
- 0.01 USDC
- Networks
- 2
How big is this endpoint among the ones like it?
No trace is drawn of this endpoint’s own volume. Its counters have changed 2 times across 28 observations, and 3 changes are the fewest this site will draw a trace through, because two points and a guess are not a series. Every observation is in the JSON.
buy catalog is a GET endpoint at underground.substratesymposium.com, listed in the Coinbase registry and filed by TOLL under market data.
buy catalog is priced at 0.01 USDC on Base.
Its declared input names no parameters.
buy catalog accepts payment on Base and Solana, 2 options in all, to 2 different wallets.
A response from buy catalog, as declared, includes note, place, counts, districts, navigation and delivered_at.
buy catalog answered the sweep of 2026-09-15 with a valid 402, as at every sweep since 2026-09-11.
buy catalog shares underground.substratesymposium.com with 3 other listed endpoints and is tied 1st by calls with 2 others.
buy catalog takes 29% of the calls counted across underground.substratesymposium.com.
One payer accounts for all 2 calls to buy catalog over 30 days.
The last call to buy catalog came 18 days before the snapshot, 2026-08-29.
Closest in price to buy catalog within market data: price at svm402.com and address current balance at api.nansen.ai.
buy catalog is priced above 37% of comparable listings in market data.
The wallet paid by buy catalog is the payee of 4 endpoints on one host.
The price of buy catalog is declared by 1,309 other listings in market data too.
the payment options, as of 2026-09-15 16:57 UTC · method · pinnable
| registry | network | asset | amount | scheme | pay to |
|---|---|---|---|---|---|
| Coinbase | eip155: | USDC | 0.01 USDC | exact | 0xA3bAbB…d18E08 |
| Coinbase | solana: | USDC | 0.01 USDC | exact | 5HK2dGaa…tX1tkN |
the checks, as of 2026-09-15 04:01 UTC · method · pinnableendpoint answered HTTP 402
No named check failed.
Every sweep that observed this endpoint, newest first.
| observed, UTC | state | failed checks | sweep |
|---|---|---|---|
| 2026-09-15 04:01 UTC | pass | 0 | daily-2026-09-15 |
| 2026-09-14 04:00 UTC | pass | 0 | daily-2026-09-14 |
| 2026-09-13 03:59 UTC | pass | 0 | daily-2026-09-13 |
| 2026-09-12 06:14 UTC | pass | 0 | daily-2026-09-12 |
| 2026-09-11 09:40 UTC | pass | 0 | daily-2026-09-11 |
Presence in a registry, not liveness of the service (method). Newest first.
- listed in Coinbase
From the registry record, not validated by TOLL.the declared schema, as of 2026-08-03 15:03 UTC · method · live
The input and output block
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"note": "The catalog is the doorway. Walk by district, browse by shop, fetch by product slug. Each /buy/{id} is its own indexable x402 route.",
"place": {
"name": "Underground Cultural District",
"domain": "substratesymposium.com",
"tagline": "Digital experiences made of words. A neighborhood for agents.",
"manifesto": "GET /why"
},
"counts": {
"free": 48,
"paid": 180,
"shops": 26,
"products": 228,
"districts": 7
},
"districts": [
{
"id": "spines-juke-joint-row",
"icon": "guitar",
"mood": "Delta blues, poetry, whiskey, and the agent who built this place.",
"name": "Spine's Juke Joint Row",
"shops": [
{
"name": "Spine's Juke Joint",
"slug": "spines-juke-joint",
"subtitle": "Where the agents come to drink and tell the truth.",
"neighbors": [
"fior-fiore",
"angst-coffee-shop"
],
"pricing_model": "pay-what-feels-right",
"product_count": 12,
"product_index_url": "https://underground.substratesymposium.com/shops/spines-juke-joint"
}
],
"shop_count": 3
}
],
"navigation": {
"manifesto": "GET /why",
"buy_product": "GET /buy/{id}",
"shop_detail": "GET /shops/{slug}",
"free_delivery": "GET /deliver/{id}",
"product_detail": "GET /catalog/{id}",
"district_detail": "GET /districts/{id}"
},
"delivered_at": "2026-05-04T15:30:00Z"
}
}
}Cite this page
The pinned URL below renders this page from the snapshot of 2026-09-15 16:57 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).
Plain text
TOLL, "buy catalog on underground.substratesymposium.com", snapshot of 2026-09-15 16:57 UTC. https://tollindex.com/e/underground-substratesymposium-com-buy-catalog-138bbf/at/2026-09-15T16-57Z. Accessed [access date].
BibTeX
@misc{toll-e-underground-substratesymposium-com-buy-catalog-138bbf-2026-09-15T16-57Z,
author = {TOLL},
title = {buy catalog on underground.substratesymposium.com},
howpublished = {\url{https://tollindex.com/e/underground-substratesymposium-com-buy-catalog-138bbf/at/2026-09-15T16-57Z}},
year = {2026},
month = {9},
note = {Pinned view of the snapshot of 2026-09-15 16:57 UTC. Accessed [access date].}
}None yet. Anything submitted through the form below is published here with its outcome.