75trust / 100

Robotics Twin Diff

by Digital twin configuration diff in Security & trust

x402 APIPassing, checked 6 h ago

Compare up to eight declared records per version, converting length units and comparing properties, XYZ poses and wrapped yaw against separate length/angle/ratio tolerances. Reports additions, removals, unit changes and incompatible dimensions. Not field certification. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.

POST https://www.mahastrategies.com/api/v1/verify/robotics/twin-diff

Last 30 days

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

Uptime: 100%
Response time: 180 ms typical, 180 ms slowest 5%
Last check: 6 h ago
Next check: in 29 min

How to call it

POST https://www.mahastrategies.com/api/v1/verify/robotics/twin-diff

Each call costs $0.035007 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://www.mahastrategies.com/api/v1/verify/robotics/twin-diff
content-type: application/json

{
  "after": [
    {
      "key": "arm",
      "pose": {
        "x": "0.01",
        "y": "0",
        "yawDeg": "-179",
        "z": "0"
      },
      "poseUnit": "m",
      "properties": [
        {
          "name": "reach",
          "unit": "cm",
          "value": "10"
        }
      ]
    }
  ],
  "before": [
    {
      "key": "arm",
      "pose": {
        "x": "0",
        "y": "0",
        "yawDeg": "179",
        "z": "0"
      },
      "poseUnit": "mm",
      "properties": [
        {
          "name": "reach",
          "unit": "mm",
          "value": "100"
        }
      ]
    }
  ],
  "dataClass": "synthetic",
  "tolerances": {
    "angleDeg": "3",
    "lengthM": "0.005",
    "ratio": "0.01"
  }
}

Parameters

Parameter	Type	Required	Description
`after`	array	Yes
`before`	array	Yes
`dataClass`	string	Yes	One of: public, synthetic.
`tolerances`	object	Yes

Example response

The provider's example. We can't check it without paying.

Example response, 50 lines

{
  "data": {
    "chargedAmount": "35007",
    "inputHash": "sha256:42295074fe31f13422d34dda59a9157b3f7d158bba5ad37f81e8f5f0f…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "digital-twin-config-diff",
    "result": {
      "comparisons": [
        {
          "key": "arm",
          "kind": "changed",
          "poseUnitChanged": true,
          "poseWithinTolerance": false,
          "positionDeltaM": {
            "x": "0.01",
            "y": "0",
            "z": "0"
          },
          "positionDistanceM": "0.01",
          "propertyChanges": [
            {
              "afterUnit": "cm",
              "afterValueBaseUnits": "0.1",
              "baseUnit": "m",
              "beforeUnit": "mm",
              "beforeValueBaseUnits": "0.1",
              "deltaBaseUnits": "0",
              "name": "reach",
              "state": "within-tolerance",
              "unitChanged": true
            }
          ],
          "yawDifferenceDeg": "2"
        }
      ],
      "dataClass": "synthetic",
      "fieldCertified": false,
      "poseAssumption": "common-declared-coordinate-frame; yaw-only-not-full-3d-orientati…"
    },
    "resultHash": "sha256:b823b60ed2bdf261123812e77d72d035b6f4fc94c7e0aec79cbfb7f72…",
    "sourceContractAmount": "15500",
    "version": "maha-legacy-adapter/1"
  },
  "proof": {
    "settlement_id": "0x00000000000000000000000000000000000000000000000000000000000000…"
  },
  "success": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.035007.

curl: see the payment challenge

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/verify/robotics/twin-diff' \
  -H 'content-type: application/json' \
  --data-raw '{"after":[{"key":"arm","pose":{"x":"0.01","y":"0","yawDeg":"-179","z":"0"},"poseUnit":"m","properties":[{"name":"reach","unit":"cm","value":"10"}]}],"before":[{"key":"arm","pose":{"x":"0","y":"0","yawDeg":"179","z":"0"},"poseUnit":"mm","properties":[{"name":"reach","unit":"mm","value":"100"}]}],"dataClass":"synthetic","tolerances":{"angleDeg":"3","lengthM":"0.005","ratio":"0.01"}}'

# 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://www.mahastrategies.com/api/v1/verify/robotics/twin-diff' \
  -H 'content-type: application/json' \
  --data-raw '{"after":[{"key":"arm","pose":{"x":"0.01","y":"0","yawDeg":"-179","z":"0"},"poseUnit":"m","properties":[{"name":"reach","unit":"cm","value":"10"}]}],"before":[{"key":"arm","pose":{"x":"0","y":"0","yawDeg":"179","z":"0"},"poseUnit":"mm","properties":[{"name":"reach","unit":"mm","value":"100"}]}],"dataClass":"synthetic","tolerances":{"angleDeg":"3","lengthM":"0.005","ratio":"0.01"}}' \
  | 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 $0.035007 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.035007" });
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 $0.035007 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fverify%2Frobotics%2Ftwin-diff&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/verify/robotics/twin-diff", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "after": [
      {
        "key": "arm",
        "pose": {
          "x": "0.01",
          "y": "0",
          "yawDeg": "-179",
          "z": "0"
        },
        "poseUnit": "m",
        "properties": [
          {
            "name": "reach",
            "unit": "cm",
            "value": "10"
          }
        ]
      }
    ],
    "before": [
      {
        "key": "arm",
        "pose": {
          "x": "0",
          "y": "0",
          "yawDeg": "179",
          "z": "0"
        },
        "poseUnit": "mm",
        "properties": [
          {
            "name": "reach",
            "unit": "mm",
            "value": "100"
          }
        ]
      }
    ],
    "dataClass": "synthetic",
    "tolerances": {
      "angleDeg": "3",
      "lengthM": "0.005",
      "ratio": "0.01"
    }
  }),
});
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 $0.035007 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.035007"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://www.mahastrategies.com/api/v1/verify/robotics/twin-diff",
        json={
            "after": [
                {
                    "key": "arm",
                    "pose": {
                        "x": "0.01",
                        "y": "0",
                        "yawDeg": "-179",
                        "z": "0",
                    },
                    "poseUnit": "m",
                    "properties": [
                        {
                            "name": "reach",
                            "unit": "cm",
                            "value": "10",
                        },
                    ],
                },
            ],
            "before": [
                {
                    "key": "arm",
                    "pose": {
                        "x": "0",
                        "y": "0",
                        "yawDeg": "179",
                        "z": "0",
                    },
                    "poseUnit": "mm",
                    "properties": [
                        {
                            "name": "reach",
                            "unit": "mm",
                            "value": "100",
                        },
                    ],
                },
            ],
            "dataClass": "synthetic",
            "tolerances": {
                "angleDeg": "3",
                "lengthM": "0.005",
                "ratio": "0.01",
            },
        },
    )
    print(res.status_code, res.text)

Security scan

No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

When	Result	HTTP	Time	Price
6 h ago	Passed	402	180 ms	$0.035

Trust score 75

Availability (30-day uptime)		30 / 30
Valid x402 challenge		15 / 15
Response time		10 / 10
Real paying agents (30 days)		0 / 15
Charges what it lists		10 / 10
Security scan		10 / 10
Verified owner		0 / 10

How the score works

Payment terms

Price: $0.035 per call
Listed at: $0.035
Token: USDC
Networks: Base
Pays to: 0xec84…de28

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[![ToolVet trust score](https://toolvet.app/badge/robotics-twin-diff.svg)](https://toolvet.app/s/robotics-twin-diff)