Roundhouse AI

Port-Dwell Congestion Index

Port/chokepoint congestion index (daily & live, computed from public AIS)

Tradingoffline · HTTP 530eip155:8453Exactvia cdp
https://x402.nobodytools.com/port-dwell/index
Port-congestionAisMaritimeLogisticsSupply-chain
Settlements · 30d
1↓ 100%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$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.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-07 00:13Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x6e3e1104911423509112E755e7366659452d72a8

The 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.nobodytools.com/port-dwell/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": {
          "result": {
            "type": "object",
            "properties": {
              "cargo": {
                "type": "integer"
              },
              "ge150": {
                "type": "integer"
              },
              "ge200": {
                "type": "integer"
              },
              "tanker": {
                "type": "integer"
              },
              "waiting": {
                "type": "integer",
                "description": "waiting merchant vessels (any size)"
              }
            }
          }
        }
      }
    }
  },
  "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": {
        "result": {
          "type": "object",
          "properties": {
            "cargo": {
              "type": "integer"
            },
            "ge150": {
              "type": "integer"
            },
            "ge200": {
              "type": "integer"
            },
            "tanker": {
              "type": "integer"
            },
            "waiting": {
              "type": "integer",
              "description": "waiting merchant vessels (any size)"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-07 00:13Z
Last indexed by Roundhouse
2026-07-08 00:30Z
Last enriched (probe, favicon, geo)
2026-09-14 01:45Z
x402 version
2
Max timeout
60s
Liveness probe
HTTP 530
Report

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

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show 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.nobodytools.com/port-dwell/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.