ToolVet
78trust / 100

Quote

by SafeRoute in Onchain & crypto

x402 APIPassing, checked 26 min ago

Buy a safety-checked Base DEX swap quote for USDC, WETH, EURC, cbETH, cbBTC, VIRTUAL, or AERO. Returns unsigned calldata or a buyer-signable gasless payload; SafeRoute never holds funds, signs, or broadcasts.

POST
https://api.usesaferoute.com/v1/quote
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
380 ms
527 ms slowest 5%
Last check
Passed
26 min ago, next in 4 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

POST https://api.usesaferoute.com/v1/quote

Each call costs $0.01 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://api.usesaferoute.com/v1/quote
content-type: application/json

{
  "amount": "25",
  "executionMode": "standard",
  "from": "USDC",
  "intentId": "intent_unique_1234567890",
  "referralCode": "PARTNER_CODE",
  "sourceAgentId": "buyer-agent-id",
  "to": "WETH",
  "wallet": "0x1111111111111111111111111111111111111111"
}

Parameters

ParameterTypeRequiredDescription
amountstringYesHuman-readable sell amount, capped at $500 USDC equivalent
executionModestringNo One of: standard, gasless. Default: "standard".
fromstringYesApproved Base sell-token symbol One of: USDC, WETH, EURC, CBETH, CBBTC, VIRTUAL, AERO.
intentIdstringNo
referralCodestringNo
sourceAgentIdstringNo
tostringYesApproved Base buy-token symbol One of: USDC, WETH, EURC, CBETH, CBBTC, VIRTUAL, AERO.
walletstringYesBuyer-controlled taker wallet

Example response

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

Example response, 42 lines
{
  "approvalRequired": false,
  "buyAmount": "10000000000000000",
  "buyToken": "0x4200000000000000000000000000000000000006",
  "chainId": 8453,
  "createdAt": "2026-01-01T00:00:00.000Z",
  "executionMode": "standard",
  "expiresAt": "2026-01-01T00:01:00.000Z",
  "feeBps": 10,
  "inputFormat": "simple",
  "payloadHash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "quoteId": "00000000-0000-4000-8000-000000000000",
  "receipt": {
    "buyAmount": "10000000000000000",
    "buyToken": "0x4200000000000000000000000000000000000006",
    "chainId": 8453,
    "createdAt": "2026-01-01T00:00:00.000Z",
    "executionMode": "standard",
    "expiresAt": "2026-01-01T00:01:00.000Z",
    "feeBps": 10,
    "feeRecipient": "0x3333333333333333333333333333333333333333",
    "payloadHash": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "quoteId": "00000000-0000-4000-8000-000000000000",
    "sellAmount": "25000000",
    "sellToken": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "taker": "0x1111111111111111111111111111111111111111",
    "usdcNotional": "25000000"
  },
  "receiptSignature": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "sellAmount": "25000000",
  "sellToken": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "simulation": {
    "status": "passed"
  },
  "taker": "0x1111111111111111111111111111111111111111",
  "transaction": {
    "data": "0x",
    "to": "0x2222222222222222222222222222222222222222",
    "value": "0"
  },
  "usdNotional": "25000000"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.usesaferoute.com/v1/quote' \
  -H 'content-type: application/json' \
  --data-raw '{"amount":"25","executionMode":"standard","from":"USDC","intentId":"intent_unique_1234567890","referralCode":"PARTNER_CODE","sourceAgentId":"buyer-agent-id","to":"WETH","wallet":"0x1111111111111111111111111111111111111111"}'

# 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://api.usesaferoute.com/v1/quote' \
  -H 'content-type: application/json' \
  --data-raw '{"amount":"25","executionMode":"standard","from":"USDC","intentId":"intent_unique_1234567890","referralCode":"PARTNER_CODE","sourceAgentId":"buyer-agent-id","to":"WETH","wallet":"0x1111111111111111111111111111111111111111"}' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.usesaferoute.com%2Fv1%2Fquote&method=POST
const res = await pay("https://api.usesaferoute.com/v1/quote", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "amount": "25",
    "executionMode": "standard",
    "from": "USDC",
    "intentId": "intent_unique_1234567890",
    "referralCode": "PARTNER_CODE",
    "sourceAgentId": "buyer-agent-id",
    "to": "WETH",
    "wallet": "0x1111111111111111111111111111111111111111"
  }),
});
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.usesaferoute.com/v1/quote",
        json={
            "amount": "25",
            "executionMode": "standard",
            "from": "USDC",
            "intentId": "intent_unique_1234567890",
            "referralCode": "PARTNER_CODE",
            "sourceAgentId": "buyer-agent-id",
            "to": "WETH",
            "wallet": "0x1111111111111111111111111111111111111111",
        },
    )
    print(res.status_code, res.text)

Security scan

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