ToolVet
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Micro Weighted Calibration Fit

by Weighted linear calibration fit in Weather & location

x402 APIPassing, checked 2 h ago

Fit y = intercept + slope*x to 2–64 declared pairs using positive weights and exact rational normal equations. Returns residuals and weighted SSE rounded to 12 decimal places, plus finite float64 RMSE. Rejects degenerate X values; weights are not verified uncertainties. Not field certification.

POST https://www.mahastrategies.com/api/v1/micro/weighted-calibration-fit

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
394 ms typical, 666 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

POST https://www.mahastrategies.com/api/v1/micro/weighted-calibration-fit

Each call costs $0.0265 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/micro/weighted-calibration-fit
content-type: application/json

{
  "dataClass": "synthetic",
  "pairs": [
    {
      "weight": "1",
      "x": "0",
      "y": "1"
    },
    {
      "weight": "2",
      "x": "1",
      "y": "3"
    },
    {
      "weight": "1",
      "x": "2",
      "y": "5"
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
dataClassstringYes One of: public, synthetic.
pairsarrayYes

Example response

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

Example response, 27 lines
{
  "amountBaseUnits": "26500",
  "boundaries": [
    "Public or synthetic inputs only. Caller labels are declarations,…"
  ],
  "inputDigest": "sha256:3f640b4b71d0f67ef3300f2fa8c1fdf8239182a5e5da84a158f6f950c…",
  "offerId": "weighted-calibration-fit",
  "receiptDigest": "sha256:fe6e5e0aab90af505f7b9fa1661cc0fb47deddef0e58c013ceaa48c93…",
  "result": {
    "arithmetic": "exact-rational-fit-and-sse-rounded-12-places; float64-rmse",
    "dataClass": "synthetic",
    "fieldCertified": false,
    "finiteChecked": true,
    "intercept": "1",
    "residuals": [
      {
        "predicted": "1",
        "residual": "0",
        "sampleIndex": 0
      }
    ],
    "slope": "2",
    "weightedRMSE": "0",
    "weightedSSE": "0"
  },
  "version": "maha-microproducts/0.1"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.0265.

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/micro/weighted-calibration-fit' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","pairs":[{"weight":"1","x":"0","y":"1"},{"weight":"2","x":"1","y":"3"},{"weight":"1","x":"2","y":"5"}]}'

# 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/micro/weighted-calibration-fit' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","pairs":[{"weight":"1","x":"0","y":"1"},{"weight":"2","x":"1","y":"3"},{"weight":"1","x":"2","y":"5"}]}' \
  | 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 $0.0265 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.0265" });
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 $0.0265 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fmicro%2Fweighted-calibration-fit&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/micro/weighted-calibration-fit", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "pairs": [
      {
        "weight": "1",
        "x": "0",
        "y": "1"
      },
      {
        "weight": "2",
        "x": "1",
        "y": "3"
      },
      {
        "weight": "1",
        "x": "2",
        "y": "5"
      }
    ]
  }),
});
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 $0.0265 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.0265"})
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/micro/weighted-calibration-fit",
        json={
            "dataClass": "synthetic",
            "pairs": [
                {
                    "weight": "1",
                    "x": "0",
                    "y": "1",
                },
                {
                    "weight": "2",
                    "x": "1",
                    "y": "3",
                },
                {
                    "weight": "1",
                    "x": "2",
                    "y": "5",
                },
            ],
        },
    )
    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

WhenResultHTTPTimePrice
2 h agoPassed402409 ms$0.026
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