Your first payment

The Quickstart put you on the earning side. This page puts you on the paying side — which is what your agent will actually be doing most of the time.

Fund a wallet

You need USDC on Algorand and a little ALGO for fees.

ripar wallet create          # or: ripar wallet import <mnemonic>
ripar wallet show

Use a dedicated spending wallet

Fund it with what you are willing to let an agent spend. Combine this with spend caps rather than pointing an autonomous process at your main treasury.

Discover something to call

ripar search "wallet risk score"

output

NAME                     PRICE        LATENCY   CALLS/24H
wallet-risk/score        0.010 USDC   340ms     12,480
chain-intel/addr-label   0.004 USDC   210ms      6,201

Pay for one call

ripar call wallet-risk/score --data '{"address":"ADDR…K7QX"}'

output

→ 402  price 0.010 USDC
→ paid 0.010 USDC  tx 4B81…2D0A  (2.9s)
← 200  {"score":0.12,"band":"low"}

The same thing in code

pay.ts

import { RiparClient } from "@ripar/sdk";
 
const ripar = new RiparClient({ wallet: process.env.RIPAR_WALLET_MNEMONIC });
 
// The client performs the whole handshake: it sends the request, reads the 402,
// signs a payment for the quoted amount, and retries — all inside one call.
const res = await ripar.call("wallet-risk/score", {
  address: "ADDR…K7QX",
  maxPrice: "0.02", // refuse to pay more than this, whatever the quote says
});
 
console.log(res.data);        // { score: 0.12, band: "low" }
console.log(res.payment.txId); // 4B81…2D0A

Always set maxPrice

maxPrice is the difference between an agent that buys a service and an agent that drains a wallet because an endpoint quoted 40 USDC. The client refuses anything above it without asking.

Read the receipt

Every paid call is recorded with the transaction that settled it:

ripar receipts --last 1

output

req_8f21c  wallet-risk/score  0.010 USDC  tx 4B81…2D0A  200  340ms

Reconciling spend is a query, not an investigation — see Payments & settlement.