ToolVet
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Decide Binding Node

by Business Frameworks in Markets & finance

x402 APIPassing, checked 3 h ago

Business Frameworks · business-frameworks/market/decide/[email protected], applied — POST a chain from end demand to the upstream limit with each node's tightness and each edge's weight and lag; get effective tightness along the path, the binding node, the dominant transmission and the lag to each seat. Deterministic (the node's rule, no model): figures, verdict, action and check with the 256-token node text — schema free at GET /apply/market/decide/binding-node.

POST
https://business-frameworks.matryoshka-paradigms.workers.dev/apply/market/decide/binding-node
Price
$0.05
per call in USDC
Uptime
100%
last 30 days
Response time
692 ms
1.5 s slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

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Status and outage history · Atom feed

How to call it

POST https://business-frameworks.matryoshka-paradigms.workers.dev/apply/market/decide/binding-node

Each call costs $0.05 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://business-frameworks.matryoshka-paradigms.workers.dev/apply/market/decide/binding-node
content-type: application/json

{
  "chain": [
    {
      "id": "end",
      "pull": 10,
      "tightness": 0
    },
    {
      "id": "A",
      "tightness": 3
    },
    {
      "id": "B",
      "tightness": 5
    },
    {
      "id": "C",
      "tightness": 8
    }
  ],
  "edges": [
    {
      "lag_months": 0,
      "w": 1
    },
    {
      "lag_months": 6,
      "w": 0.5
    },
    {
      "lag_months": 12,
      "w": 0.9
    }
  ]
}

Parameters

ParameterTypeRequiredDescription
chainarray of objectYesThe path in order from end demand (first) to the upstream limit (last).
edgesarray of objectYesOne edge between each adjacent pair, in the same order as the chain: edges[i] joins chain[i+1] (upstream) to chain[i] (downstream). One fewer than the nodes.

Example response

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

{
  "applied": {
    "action": [
      "<what to do first>"
    ],
    "basis": [
      "<where the node ends and the arithmetic begins>"
    ],
    "check": "<when to re-run>",
    "figures": "<the computed figures>",
    "verdict": "<the decision, worked for these inputs>"
  },
  "cite_as": "McHenry, J. (2026). Business Frameworks, version 1.2, business-frameworks/market/decide/[email protected].",
  "handle": "business-frameworks/market/decide/[email protected]",
  "node": {
    "cites": [],
    "text": "<the node text>"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.05.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://business-frameworks.matryoshka-paradigms.workers.dev/apply/market/decide/binding-node' \
  -H 'content-type: application/json' \
  --data-raw '{"chain":[{"id":"end","pull":10,"tightness":0},{"id":"A","tightness":3},{"id":"B","tightness":5},{"id":"C","tightness":8}],"edges":[{"lag_months":0,"w":1},{"lag_months":6,"w":0.5},{"lag_months":12,"w":0.9}]}'

# 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://business-frameworks.matryoshka-paradigms.workers.dev/apply/market/decide/binding-node' \
  -H 'content-type: application/json' \
  --data-raw '{"chain":[{"id":"end","pull":10,"tightness":0},{"id":"A","tightness":3},{"id":"B","tightness":5},{"id":"C","tightness":8}],"edges":[{"lag_months":0,"w":1},{"lag_months":6,"w":0.5},{"lag_months":12,"w":0.9}]}' \
  | 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 $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
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 $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbusiness-frameworks.matryoshka-paradigms.workers.dev%2Fapply%2Fmarket%2Fdecide%2Fbinding-node&method=POST
const res = await pay("https://business-frameworks.matryoshka-paradigms.workers.dev/apply/market/decide/binding-node", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "chain": [
      {
        "id": "end",
        "pull": 10,
        "tightness": 0
      },
      {
        "id": "A",
        "tightness": 3
      },
      {
        "id": "B",
        "tightness": 5
      },
      {
        "id": "C",
        "tightness": 8
      }
    ],
    "edges": [
      {
        "lag_months": 0,
        "w": 1
      },
      {
        "lag_months": 6,
        "w": 0.5
      },
      {
        "lag_months": 12,
        "w": 0.9
      }
    ]
  }),
});
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 $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://business-frameworks.matryoshka-paradigms.workers.dev/apply/market/decide/binding-node",
        json={
            "chain": [
                {
                    "id": "end",
                    "pull": 10,
                    "tightness": 0,
                },
                {
                    "id": "A",
                    "tightness": 3,
                },
                {
                    "id": "B",
                    "tightness": 5,
                },
                {
                    "id": "C",
                    "tightness": 8,
                },
            ],
            "edges": [
                {
                    "lag_months": 0,
                    "w": 1,
                },
                {
                    "lag_months": 6,
                    "w": 0.5,
                },
                {
                    "lag_months": 12,
                    "w": 0.9,
                },
            ],
        },
    )
    print(res.status_code, res.text)

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