ToolVet
78trust / 100

Return Disposition

by handel.halowerk.com in Other

x402 APIPassing, checked 2 h ago

Takes a list of returns with the figures your own systems already hold and returns one decision per return, with the arithmetic that produced it. Four routes are valued: reselling as is, at the resale value weighted by the probability that it actually sells and less the restocking cost; repairing and reselling, at the refurbished value weighted by the repair success probability plus the salvage value on the failure branch, less the repair cost, which is incurred either way; recovering value…

POST
https://handel.halowerk.com/v1/return-disposition
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
120 ms
168 ms slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://handel.halowerk.com/v1/return-disposition

Each call costs $0.004 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://handel.halowerk.com/v1/return-disposition
content-type: application/json

{
  "currency": "EUR",
  "decision_margin_pct": 5,
  "defaults": {
    "disposal_cost": 1.5,
    "inbound_freight_cost": 3.9,
    "inspection_cost": 4.5,
    "restocking_cost": 2
  },
  "items": [
    {
      "condition": "like_new",
      "refurb_resale_value": 199,
      "repair_cost": 35,
      "repair_success_probability": 0.9,
      "resale_probability": 0.95,
      "resale_value": 189,
      "return_id": "R-1001",
      "salvage_value": 12
    },
    {
      "condition": "defective",
      "refurb_resale_value": 149,
      "repair_cost": 60,
      "repair_success_probability": 0.7,
      "resale_probability": 0.4,
      "resale_value": 20,
      "return_id": "R-1002",
      "salvage_value": 18
    },
    {
      "condition": "damaged",
      "refurb_resale_value": 40,
      "repair_cost": 55,
      "repair_success_probability": 0.5,
      "resale_probability": 0.3,
      "resale_value": 9,
      "return_id": "R-1003",
      "salvage_value": 6
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
currencystringNoISO 4217 code for every amount in this request. Not converted, only carried through. Default: "EUR".
decision_margin_pctnumberNoHow far ahead the best route must be before it counts as a decision. Inside this margin the result is reported as ambiguous instead of asserting a winner. Default: 5.
defaultsobjectNoValues that apply to every item that does not carry its own. An item value always wins.
itemsarray of objectYesThe returns to decide on. Every amount is in the currency named at document level.

Example response

The listing has no example response.

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://handel.halowerk.com/v1/return-disposition' \
  -H 'content-type: application/json' \
  --data-raw '{"currency":"EUR","decision_margin_pct":5,"defaults":{"disposal_cost":1.5,"inbound_freight_cost":3.9,"inspection_cost":4.5,"restocking_cost":2},"items":[{"condition":"like_new","refurb_resale_value":199,"repair_cost":35,"repair_success_probability":0.9,"resale_probability":0.95,"resale_value":189,"return_id":"R-1001","salvage_value":12},{"condition":"defective","refurb_resale_value":149,"repair_cost":60,"repair_success_probability":0.7,"resale_probability":0.4,"resale_value":20,"return_id":"R-1002","salvage_value":18},{"condition":"damaged","refurb_resale_value":40,"repair_cost":55,"repair_success_probability":0.5,"resale_probability":0.3,"resale_value":9,"return_id":"R-1003","salvage_value":6}]}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://handel.halowerk.com/v1/return-disposition' \
  -H 'content-type: application/json' \
  --data-raw '{"currency":"EUR","decision_margin_pct":5,"defaults":{"disposal_cost":1.5,"inbound_freight_cost":3.9,"inspection_cost":4.5,"restocking_cost":2},"items":[{"condition":"like_new","refurb_resale_value":199,"repair_cost":35,"repair_success_probability":0.9,"resale_probability":0.95,"resale_value":189,"return_id":"R-1001","salvage_value":12},{"condition":"defective","refurb_resale_value":149,"repair_cost":60,"repair_success_probability":0.7,"resale_probability":0.4,"resale_value":20,"return_id":"R-1002","salvage_value":18},{"condition":"damaged","refurb_resale_value":40,"repair_cost":55,"repair_success_probability":0.5,"resale_probability":0.3,"resale_value":9,"return_id":"R-1003","salvage_value":6}]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fhandel.halowerk.com%2Fv1%2Freturn-disposition&method=POST
const res = await pay("https://handel.halowerk.com/v1/return-disposition", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "currency": "EUR",
    "decision_margin_pct": 5,
    "defaults": {
      "disposal_cost": 1.5,
      "inbound_freight_cost": 3.9,
      "inspection_cost": 4.5,
      "restocking_cost": 2
    },
    "items": [
      {
        "condition": "like_new",
        "refurb_resale_value": 199,
        "repair_cost": 35,
        "repair_success_probability": 0.9,
        "resale_probability": 0.95,
        "resale_value": 189,
        "return_id": "R-1001",
        "salvage_value": 12
      },
      {
        "condition": "defective",
        "refurb_resale_value": 149,
        "repair_cost": 60,
        "repair_success_probability": 0.7,
        "resale_probability": 0.4,
        "resale_value": 20,
        "return_id": "R-1002",
        "salvage_value": 18
      },
      {
        "condition": "damaged",
        "refurb_resale_value": 40,
        "repair_cost": 55,
        "repair_success_probability": 0.5,
        "resale_probability": 0.3,
        "resale_value": 9,
        "return_id": "R-1003",
        "salvage_value": 6
      }
    ]
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://handel.halowerk.com/v1/return-disposition",
        json={
            "currency": "EUR",
            "decision_margin_pct": 5,
            "defaults": {
                "disposal_cost": 1.5,
                "inbound_freight_cost": 3.9,
                "inspection_cost": 4.5,
                "restocking_cost": 2,
            },
            "items": [
                {
                    "condition": "like_new",
                    "refurb_resale_value": 199,
                    "repair_cost": 35,
                    "repair_success_probability": 0.9,
                    "resale_probability": 0.95,
                    "resale_value": 189,
                    "return_id": "R-1001",
                    "salvage_value": 12,
                },
                {
                    "condition": "defective",
                    "refurb_resale_value": 149,
                    "repair_cost": 60,
                    "repair_success_probability": 0.7,
                    "resale_probability": 0.4,
                    "resale_value": 20,
                    "return_id": "R-1002",
                    "salvage_value": 18,
                },
                {
                    "condition": "damaged",
                    "refurb_resale_value": 40,
                    "repair_cost": 55,
                    "repair_success_probability": 0.5,
                    "resale_probability": 0.3,
                    "resale_value": 9,
                    "return_id": "R-1003",
                    "salvage_value": 6,
                },
            ],
        },
    )
    print(res.status_code, res.text)

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