ToolVet
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Tax Brackets

by tax-brackets in Markets & finance

x402 APIPassing, checked 45 min ago

Reference tables for a US tax year and filing status: income brackets, standard deduction, FICA constants, and capital-gains breakpoints. Pure lookup, not tax advice.

GET https://api.agentstools.dev/tax/brackets

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Status and outage history · Atom feed

Uptime
100%
Response time
27 ms typical, 88 ms slowest 5%
Last check
45 min ago
Next check
any minute now

How to call it

GET https://api.agentstools.dev/tax/brackets

Each call costs $0.002 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.

GET https://api.agentstools.dev/tax/brackets?filing_status=single&tax_year=2026

Parameters

ParameterTypeRequiredDescription
filing_statusstringNoFiling status, default single One of: single, married_jointly, married_separately, head_of_household.
tax_yearintegerNoTax year, default 2026

Example response

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

{
  "brackets": [
    {
      "from": 0,
      "rate": 0.1,
      "to": 12400
    }
  ],
  "disclaimer": "estimate for reference only, not tax advice",
  "filing_status": "single",
  "standard_deduction": 16100,
  "tax_year": 2026
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.agentstools.dev/tax/brackets?filing_status=single&tax_year=2026'

# 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 - 'https://api.agentstools.dev/tax/brackets?filing_status=single&tax_year=2026' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.agentstools.dev%2Ftax%2Fbrackets
const res = await pay("https://api.agentstools.dev/tax/brackets?filing_status=single&tax_year=2026");
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.agentstools.dev/tax/brackets?filing_status=single&tax_year=2026")
    print(res.status_code, res.text)

Security scan

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Recent checks

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