# GET /defi/protocol: $0.01 per call

DeFi protocol safety check: TVL and its 1h/1d/7d change, chains, category, audits and audit links, oracles, age, forks, market cap/TVL, and every past hack from DefiLlama's database, rolled into flags, a 0-100 score and a verdict. Pass ?name=aave-v3 (slug or name).

- **Price:** $0.01 in USDC, the same on Base, Solana, Polygon, Arbitrum. Failed calls are never charged.
- **Free trial:** yes, 20 free calls a day from Claude, Cursor or any MCP client ([set-up](/mcp/setup)).
- **Answers cached for:** 10 min
- **Data sources:** DefiLlama protocols and hacks (free)
- **Lane:** Crypto & on-chain ([OpenAPI](/openapi/crypto.json))
- **Live health:** [status page](/status)

## Free sample

See an answer for the demo input first, free (no payment, 10 a minute): [https://aayatai.com/sample/defi-protocol](/sample/defi-protocol). It is a stored real answer when we have one, otherwise an example marked `"kind": "illustrative"`.

```bash
curl "https://aayatai.com/sample/defi-protocol"
```

## 1. See the price (free)

Call it without paying: you get `402 Payment Required` and a `PAYMENT-REQUIRED` header with the exact price and where to pay.

```bash
curl -i "https://aayatai.com/defi/protocol?name=aave-v3"
```

## 2. Pay and call (TypeScript)

```bash
npm install @x402/fetch @x402/evm viem
```

```ts
import { wrapFetchWithPaymentFromConfig } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

// A wallet used only by your agent, holding a little USDC on Base.
const account = privateKeyToAccount(process.env.WALLET_PRIVATE_KEY as `0x${string}`);
const pay = wrapFetchWithPaymentFromConfig(fetch, {
  schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(account) }],
});

const res = await pay("https://aayatai.com/defi/protocol?name=aave-v3");
console.log(await res.json());
```

## 3. Or as an MCP tool

```ts
// MCP server: https://aayatai.com/mcp (Streamable HTTP). With the x402 MCP client (see /start):
const result = await client.callTool("defi-protocol", {"name":"aave-v3"});
```

## Inputs

- `name` **(required)** (string): Protocol name or DefiLlama slug, e.g. Aave V3 or aave-v3.

Bad inputs are rejected with HTTP 400 before any payment is asked for.

## Example answer

```json
{
  "name": "Aave V3",
  "slug": "aave-v3",
  "category": "Lending",
  "chains": [
    "Ethereum",
    "Base",
    "Arbitrum"
  ],
  "url": "https://aave.com",
  "twitter": "aave",
  "tvlUsd": 18061335722,
  "change": {
    "h1": -0.9,
    "d1": -1.1,
    "d7": -1.6
  },
  "mcapUsd": null,
  "mcapToTvl": null,
  "audits": 2,
  "auditLinks": [
    "https://aave.com/security"
  ],
  "oracles": [
    "Chainlink"
  ],
  "listedAt": "2022-04-01",
  "ageDays": 1641,
  "forkedFrom": [],
  "parent": "aave",
  "hacks": [],
  "events": [
    {
      "date": "2026-04-18",
      "event": "KelpDAO hack"
    }
  ],
  "safety": {
    "verdict": "low-risk",
    "score": 100,
    "flags": [
      {
        "level": "info",
        "code": "audited",
        "message": "Multiple audits listed (1 link)."
      }
    ]
  },
  "suggestions": [],
  "source": "DefiLlama",
  "checkedAt": "2026-09-28T12:00:00.000Z"
}
```

## Related

- [GET /token/price](/services/token-price) ($0.005): Live price of any token on Base, Solana, Ethereum, BNB, Arbitrum, Polygon, Optimism or Avalanche from DEX data: USD price, total liquidity, 24h volume, buys/sel
- [GET /token/safety](/services/token-safety) ($0.02): Rug-pull and scam check for any token on Base, Solana, Ethereum, BNB, Arbitrum, Polygon, Optimism or Avalanche.
- [GET /token/report/cached](/services/token-report-cached) ($0.05): Full token report, cached tier (answers up to 15 minutes old, half price): safety (honeypot, taxes, owner powers), holders (concentration, exchange/fund/locked 
- [GET /token/report](/services/token-report) ($0.10): Full token report, live: safety (honeypot, taxes, owner powers), holders (concentration, exchange/fund/locked share), liquidity (depth, locks, pools), price act
- [GET /token/report/deep](/services/token-report-deep) ($0.25): Deep token report: everything in /token/report (safety (honeypot, taxes, owner powers), holders (concentration, exchange/fund/locked share), liquidity (depth, l
- [GET /token/new](/services/token-new) ($0.01): New token launches with real liquidity: tokens whose first DEX pool opened in the last hour (up to 24h) with at least $10k liquidity (adjustable), newest first,
- [GET /token/whales](/services/token-whales) ($0.02): Whale and exchange flows for a token on Base, Ethereum, Arbitrum, Optimism or Polygon, from its latest ~250 transfers: large transfers, deposits/withdrawals per
- [GET /wallet](/services/wallet) ($0.01): Wallet profile on Base, Ethereum or Solana: native balance, token holdings with USD values (top 25), total portfolio value, whether it is a contract, ENS name, 

New here? [Getting started in 60 seconds](/start). All services: [Aayat AI](/).