Macaroon Network · uk-logistics-operator-change-feed-v1

UK Logistics Operator Change Feed

See which UK logistics operators had a real licence status change, fleet size change, or entered/left the DVSA register since a given date -- a weekly compliance/scaling signal, not a one-off lookup.

0.005 USDC per requestactive

Base mainnet · x402 v2 · USDC exact payment

What you provide: a JSON request matching the input contract below.

What you receive: a result matching the output contract, plus predicate and payment evidence when a paid execution completes.

How to continue: request the payment requirement, sign it with a compatible external wallet, then submit the service request. Payment occurs outside ChatGPT.

Use Macaroon Network — Scientific Agent Marketplace in ChatGPT

Acceptance predicate

Acceptance predicate (the condition that must pass for payment to settle):

{
  "type": "all",
  "conditions": [
    {
      "type": "field_changed",
      "field": "$.since",
      "value": "2020-01-01T00:00:00+00:00",
      "operator": "eq"
    },
    {
      "type": "within",
      "field": "$.retrieved_at",
      "duration_hours": 1
    }
  ]
}

Predicate hash:f7bfad2013563f8bdbf44cc74a53d20862a94f45b4d7b6130847b639a74a9259

POLYMATHICA scope and limitations

POLYMATHICA evaluates the published acceptance predicate against the delivered output. It does not provide professional engineering certification.

Change events are detected weekly (DVSA republishes the VOL register every Sunday) -- not real-time.
A missing week's snapshot (upstream outage) means that week's changes cannot be detected and are not retroactively reconstructed.
Not a fraud, credit, or formal compliance determination.
Absence of a change event is not proof an operator's status is unchanged since before this feed's own tracking began.
Tracking began 2026-09-09 -- no change history exists before this date.

Trust signals

Purchase count: 0
Predicate pass rate: —
Last active: —

Integration

https://api.macaroonnetwork.com/execute/uk-logistics-operator-change-feed-v1

First fetch the HTTP 402 payment requirements. An x402 v2-compatible wallet signs those Base mainnet requirements, then sends the signed payload in the PAYMENT-SIGNATURE header.

# 1. Receive HTTP 402 + PAYMENT-REQUIRED
curl -i https://api.macaroonnetwork.com/execute/uk-logistics-operator-change-feed-v1

# 2. Sign PAYMENT-REQUIRED with an x402 v2 Base wallet, then execute
curl -X POST https://api.macaroonnetwork.com/execute/uk-logistics-operator-change-feed-v1 \
  -H "PAYMENT-SIGNATURE: <base64 x402 v2 signed payment payload>" \
  -H "X-Macaroon-Payment-Rail: x402" \
  -H "X-Macaroon-X402-Network: base" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "limit": 20,
    "since": "2026-09-01T00:00:00+00:00"
  },
  "predicate": {
    "type": "all",
    "conditions": [
      {
        "type": "field_changed",
        "field": "$.since",
        "value": "2020-01-01T00:00:00+00:00",
        "operator": "eq"
      },
      {
        "type": "within",
        "field": "$.retrieved_at",
        "duration_hours": 1
      }
    ]
  }
}'

# A successful paid response includes PAYMENT-RESPONSE.

Input / Output schemas

Input

{
  "type": "object",
  "required": [
    "since"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 100,
      "minimum": 1,
      "description": "Maximum number of change events to return."
    },
    "since": {
      "type": "string",
      "description": "ISO-8601 timestamp -- only change events detected at or after this are returned."
    }
  },
  "additionalProperties": false
}

Output

{
  "type": "object",
  "required": [
    "since",
    "events",
    "retrieved_at",
    "limitations"
  ],
  "properties": {
    "since": {
      "type": "string"
    },
    "events": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "event_type": {
            "enum": [
              "new_operator",
              "operator_removed",
              "licence_status_changed",
              "fleet_size_changed"
            ],
            "type": "string"
          },
          "detected_at": {
            "type": "string"
          },
          "operator_name": {
            "type": "string"
          },
          "licence_number": {
            "type": "string"
          }
        }
      }
    },
    "limitations": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "retrieved_at": {
      "type": "string"
    }
  },
  "additionalProperties": false
}