$0.1
per call · USD Coin on Base
Tx Intent Classifier: decodes the REAL intent of an on-chain transaction (Base/Ethereum) and returns an Ed25519-signed risk verdict (safe/review/suspicious/dangerous). Catches unlimited approvals, opaque selectors, value-to-contract, reverted tx. POST {"tx_hash":"0x..","chain":"base"} or {"to":"0x..","data":"0x.."}.
Endpoint
POST https://api.hergertsynthora.com/v1/txintent2
Calls / 30d
2
Unique payers / 30d
Sep 8
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.hergertsynthora.com/v1/txintent", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"chain": "base",
"tx_hash": "0xafc895b0138314dcde8a410d309d9080c8cfbc816ba6f371b287e34f2695207f"
}),
});
const data = await res.json();curl -X POST \
"https://api.hergertsynthora.com/v1/txintent" \
-H "Content-Type: application/json" \
-d '{"chain":"base","tx_hash":"0xafc895b0138314dcde8a410d309d9080c8cfbc816ba6f371b287e34f2695207f"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"niche": "tx_intent",
"ok": true,
"receipt": {
"alg": "ed25519"
},
"result": {}
}Payment details
0xef879bfd6c4accb8f795136de90246e1ec245e06USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Onchain Data and the homepage with a featured placement.
More from SYNTHORA & similar services
SYNTHORA · WHO GHO Timeseries
api.hergertsynthora.com
SYNTHORA who-gho-timeseries: WHO Global Health Observatory indicator time series by country (life expectancy etc.) — public-health data for research and policy agents. $0.005 USDC x402 Base. Ratings: GET /v1/ratings/who-gho-timeseries.
SYNTHORA · Defi Yields
api.hergertsynthora.com
SYNTHORA defi-yields: stablecoin DeFi yields ranked with a risk outlier detector — APY vs class median (>=3x median = the excess yield IS the risk price). Only pools with TVL >= $10M. Source: DefiLlama, free, no key. $0.005 USDC x402 Base.
SYNTHORA · Bitcoin Fees
api.hergertsynthora.com
SYNTHORA bitcoin-fees: Bitcoin fee tiers in sat/vB (fastest/half-hour/hour/economy/minimum) plus current block height. Source: mempool.space public API, keyless. Bitcoin only.