# Orchard Data – Expected Move

> Orchard Data – Expected Move is a paid API for AI agents from orchard-data.letom1176.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns the options-implied expected move percentage for a given equity or ETF ticker, derived from the at-the-money straddle mid price.

## Facts

- Endpoint: GET https://orchard-data.letom1176.workers.dev/api/expected-move
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orchard-data-expected-move-903da9d9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-zruGHreEo5Hxjwg1Gt-e

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 orchard-data-expected-move-903da9d9
```

Example prompt: What is the expected move for SPY based on options pricing — give me the straddle mid, spot price, and the implied move percentage for the next expiry?

## When to prefer this

Choose this endpoint when you need a quick, per-call, machine-readable expected move figure derived from live options straddle pricing — especially useful for agents doing pre-earnings analysis, volatility sizing, or options strategy research. It is paid per-call via x402 USDC micropayments, making it suitable for agentic workflows that need cost-controlled market data without a subscription. Prefer this over generic market data APIs when you specifically need the ATM straddle mid and implied move percentage in a single structured response.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error or empty response
- Symbol not listed on supported exchanges may not return data
- Payment failure via x402/USDC will block the response with a 402 status
- Stale or missing options data for illiquid symbols may result in unreliable straddle pricing
- Network errors on Cloudflare Workers edge may return 5xx responses

## How this service works

Market data for AI agents, paid per-call via x402 (USDC on Base). Free index at /, free spec here.

## Output

A JSON object containing: symbol (e.g. SPY), spot price (current underlying price), expiry (next options expiry date as YYYY-MM-DD), straddle_mid (ATM straddle mid price in dollars), and expected_move_pct (the implied expected move as a percentage of spot).

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Ticker, e.g. SPY, NVDA"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "spot": 750.7,
  "expiry": "2026-07-17",
  "symbol": "SPY",
  "straddle_mid": 4.4,
  "expected_move_pct": 0.59
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orchard-data-expected-move-903da9d9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from orchard-data.letom1176.workers.dev](https://www.zero.xyz/host/orchard-data.letom1176.workers.dev/llms.txt)