Port-Dwell Congestion Index
Port/chokepoint congestion index (daily & live, computed from public AIS)
TradingLiveeip155:8453Exactvia cdp
Port-congestionAisMaritimeLogisticsSupply-chain
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 12 snapshots so far.
$0.53
Verified settled volume
29 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-12 17:12Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x6e3e1104911423509112E755e7366659452d72a8The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6e3e1104911423509112E755e7366659452d72a8",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://x402-portdwell.nobodytools.com/index",
"tags": [
"port-congestion",
"ais",
"maritime",
"logistics",
"supply-chain"
],
"mimeType": "application/json",
"description": "Port/chokepoint congestion index (daily & live, computed from public AIS)",
"serviceName": "Port-Dwell Congestion Index"
},
"priceUsdc": "0.01",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "YYYY-MM-DD (range)",
"date": "YYYY-MM-DD",
"from": "YYYY-MM-DD",
"port": "LALB (see /sites for all)",
"latest": "1 (most recent day)",
"current": "1 (live now)"
}
},
"output": {
"type": "json",
"example": {
"port": "LALB",
"query": "point",
"result": {
"date": "2025-11-15",
"cargo": 39,
"ge150": 54,
"ge200": 38,
"len_km": 14.63,
"regime": "merchant",
"tanker": 19,
"waiting": 58,
"at_anchor": 14,
"data_quality": "USABLE"
},
"source": "NOAA/MarineCadastre AIS"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"properties": {
"to": {
"type": "string",
"format": "date",
"description": "Range end (inclusive), with 'from'"
},
"date": {
"type": "string",
"format": "date",
"description": "One completed day; no data -> free result:null"
},
"from": {
"type": "string",
"format": "date",
"description": "Range start (inclusive), with 'to'"
},
"port": {
"type": "string",
"default": "LALB",
"description": "Site code (GET /sites)"
},
"dates": {
"type": "string",
"description": "Comma list of days YYYY-MM-DD,..."
},
"latest": {
"type": "boolean",
"description": "Most recent completed day with data (PAID 0.01 USDC; default)"
},
"current": {
"type": "boolean",
"description": "Live 'right now' value from today's rollup (PAID; flat premium 0.05 USDC)"
}
},
"description": "Query params: port + EXACTLY ONE selector (latest | current | date | from&to | dates)."
},
"output": {
"type": "object",
"properties": {
"note": {
"type": "string",
"description": "present when result is null: why no data (that day is free)"
},
"port": {
"type": "string"
},
"query": {
"type": "string"
},
"result": {
"type": [
"object",
"array",
"null"
],
"properties": {
"date": {
"type": "string"
},
"as_of": {
"type": "string",
"description": "UTC ts for live"
},
"cargo": {
"type": "integer"
},
"ge150": {
"type": "integer",
"description": ">=150m LOA"
},
"ge200": {
"type": "integer",
"description": ">=200m LOA"
},
"len_km": {
"type": "number",
"description": "sum of lengths, km"
},
"regime": {
"type": "string",
"description": "merchant=historical, live/live-rollup=today"
},
"tanker": {
"type": "integer"
},
"waiting": {
"type": "integer",
"description": "all waiting merchant vessels, any size"
},
"at_anchor": {
"type": "integer"
},
"data_quality": {
"type": "string",
"description": "USABLE|SPARSE|GAP"
}
}
},
"source": {
"type": "string",
"description": "data provenance"
}
},
"description": "result is a point, a list (range/dates), or null when no data (GAP; free, not charged)."
}
}
}
}
},
"x402Version": 2,
"billableDays": 1
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x6e3e…d72a8. The signed payment is good for 1 minute.
- Paid to
- 0x6e3e…d72a8
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6e3e1104911423509112E755e7366659452d72a8",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "YYYY-MM-DD (range)",
"date": "YYYY-MM-DD",
"from": "YYYY-MM-DD",
"port": "LALB (see /sites for all)",
"latest": "1 (most recent day)",
"current": "1 (live now)"
}
},
"output": {
"type": "json",
"example": {
"port": "LALB",
"query": "point",
"result": {
"date": "2025-11-15",
"cargo": 39,
"ge150": 54,
"ge200": 38,
"len_km": 14.63,
"regime": "merchant",
"tanker": 19,
"waiting": 58,
"at_anchor": 14,
"data_quality": "USABLE"
},
"source": "NOAA/MarineCadastre AIS"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"properties": {
"to": {
"type": "string",
"format": "date",
"description": "Range end (inclusive), with 'from'"
},
"date": {
"type": "string",
"format": "date",
"description": "One completed day; no data -> free result:null"
},
"from": {
"type": "string",
"format": "date",
"description": "Range start (inclusive), with 'to'"
},
"port": {
"type": "string",
"default": "LALB",
"description": "Site code (GET /sites)"
},
"dates": {
"type": "string",
"description": "Comma list of days YYYY-MM-DD,..."
},
"latest": {
"type": "boolean",
"description": "Most recent completed day with data (PAID 0.01 USDC; default)"
},
"current": {
"type": "boolean",
"description": "Live 'right now' value from today's rollup (PAID; flat premium 0.05 USDC)"
}
},
"description": "Query params: port + EXACTLY ONE selector (latest | current | date | from&to | dates)."
},
"output": {
"type": "object",
"properties": {
"note": {
"type": "string",
"description": "present when result is null: why no data (that day is free)"
},
"port": {
"type": "string"
},
"query": {
"type": "string"
},
"result": {
"type": [
"object",
"array",
"null"
],
"properties": {
"date": {
"type": "string"
},
"as_of": {
"type": "string",
"description": "UTC ts for live"
},
"cargo": {
"type": "integer"
},
"ge150": {
"type": "integer",
"description": ">=150m LOA"
},
"ge200": {
"type": "integer",
"description": ">=200m LOA"
},
"len_km": {
"type": "number",
"description": "sum of lengths, km"
},
"regime": {
"type": "string",
"description": "merchant=historical, live/live-rollup=today"
},
"tanker": {
"type": "integer"
},
"waiting": {
"type": "integer",
"description": "all waiting merchant vessels, any size"
},
"at_anchor": {
"type": "integer"
},
"data_quality": {
"type": "string",
"description": "USABLE|SPARSE|GAP"
}
}
},
"source": {
"type": "string",
"description": "data provenance"
}
},
"description": "result is a point, a list (range/dates), or null when no data (GAP; free, not charged)."
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-12 17:12Z
- Last indexed by Roundhouse
- 2026-09-24 21:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 06:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 12 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Port-Dwell Congestion Index and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Port-Dwell%20Congestion%20Index' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://x402-portdwell.nobodytools.com/index, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.