DeFi yield pool history

Daily APY and TVL history for one DeFi yield pool (DefiLlama pool id from defi-yields): per-day total/base/reward APY and TVL, most recent `limit` days (default 90, max 3650), plus a summary (latest, min, max, mean APY and TVL change over the window). Send POST /api/defi-yield-history with the required field pool and pay $0.002 per call over x402 or MPP (there is no free tier). It returns a JSON object with source, fetchedAt, pool, totalPoints, count and 2 more.

Unknown pool ids answer 422. Keyless public data.

Category: Crypto & onchain data · Tags: crypto defi yield apy history tvl defillama timeseries

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Parameters

Example request

curl -i -X POST https://agent402.tools/api/defi-yield-history \
  -H "Content-Type: application/json" \
  -d '{"pool":"54e9b138-3146-4c1f-8dce-1cb948f5ef96","limit":7}'

Without payment this returns HTTP 402 Payment Required with the exact price for defi-yield-history; any x402 v2 or MPP client pays it and retries.

Example response

{
  "source": "defillama-yields",
  "fetchedAt": "2026-08-22T12:00:00.000Z",
  "pool": "54e9b138-3146-4c1f-8dce-1cb948f5ef96",
  "totalPoints": 170,
  "count": 2,
  "summary": {
    "apy": {
      "latest": 3.51,
      "first": 3.9,
      "min": 3.2,
      "max": 3.9,
      "mean": 3.6,
      "changePct": -10
    },
    "tvlUsd": {
      "latest": 546610322,
      "first": 579045934,
      "min": 540000000,
      "max": 580000000,
      "mean": 560000000,
      "changePct": -5.6
    }
  },
  "points": [
    {
      "date": "2026-08-21",
      "tvlUsd": 548000000,
      "apy": 3.6,
      "apyBase": null,
      "apyReward": 3.6
    },
    {
      "date": "2026-08-22",
      "tvlUsd": 546610322,
      "apy": 3.51,
      "apyBase": null,
      "apyReward": 3.51
    }
  ]
}

From an MCP client

catalog.call {
  "slug": "defi-yield-history",
  "params": {
    "pool": "54e9b138-3146-4c1f-8dce-1cb948f5ef96",
    "limit": 7
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for defi-yield-history; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• pool is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key (Authorization: Bearer a402_...) also pays it.
• A GET or HEAD to /api/defi-yield-history returns the same 402 quote, so the price can be read without a body.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/defi-yield-history", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "pool": "54e9b138-3146-4c1f-8dce-1cb948f5ef96",
    "limit": 7
  }),
});

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