# ProYield Historical Yield Series API

> ProYield Historical Yield Series API is a paid API for AI agents from pyd.fi, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Returns a time series of daily share price and basis-point growth for the ProYield stablecoin yield vault, sourced from Aave, Sky, and Morpho lending protocols.

## Facts

- Endpoint: GET https://pyd.fi/api/agents/series?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/proyield-historical-yield-series-api-6f06cdc8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ljOgjq6nv5zyR-zy_tBdP

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability proyield-historical-yield-series-api-6f06cdc8
```

Example prompt: Pull the ProYield vault's historical daily yield series so I can see how the share price and basis-point growth have moved over time across Aave, Sky, and Morpho.

## When to prefer this

Use this endpoint when you need historical time-series data on ProYield vault yield performance — specifically daily share price and basis-point growth — rather than live/current state. Prefer it over the live vault state endpoint when the goal is trend analysis, charting, backtesting, or performance reporting over a date range.

## Known failure modes

- Payment not included or invalid x402 payment header — returns 402 Payment Required
- No data available for requested period — may return empty points array
- Network or upstream on-chain data unavailability — returns 5xx server error
- Malformed request — returns 400 Bad Request if method is not GET/HEAD/DELETE

## How this service works

Non-custodial stablecoin yield on blue-chip DeFi lending protocols — Aave, Sky, Morpho. No directional bets, no custody. Live rates, published sources.

## Output

A JSON object containing the series metadata (first date, last date, total points count) and an array of daily data points, each with a date, from_date, share price in USDC, and growth in basis points (bps). For example: 275.93 bps on 2026-10-01 with a share price of 1.027913 USDC.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "series",
  "last_date": "2026-10-10",
  "first_date": "2026-09-24",
  "points_count": 17,
  "daily_growth_bps": [
   {
    "bps": 275.9342,
    "date": "2026-10-01",
    "from_date": "2026-09-30",
    "share_price_usdc": 1.027913
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/proyield-historical-yield-series-api-6f06cdc8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pyd.fi](https://www.zero.xyz/host/pyd.fi/llms.txt)