# MNEMOS 25-Delta Volatility Smile

> MNEMOS 25-Delta Volatility Smile is a paid API for AI agents from mnemos-agent.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-30).

Returns the 25-delta volatility smile data for a single equity options symbol, optionally filtered by expiration date

## Facts

- Endpoint: GET https://mnemos-agent.onrender.com/v1/ticker/AAPL/smile?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mnemos-25-delta-volatility-smile-98fccf30
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dnDOu9hGugD5lvQcBC9Qr

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 mnemos-25-delta-volatility-smile-98fccf30
```

Example prompt: Pull the 25-delta volatility smile for AAPL using the nearest expiration available — I want to see implied vol on both the call and put side.

## When to prefer this

Use this endpoint when you need fast, structured 25-delta implied volatility smile data for a specific equity ticker — particularly for options pricing, vol surface construction, risk reversal analysis, or skew monitoring. Prefer this over raw options chain endpoints when you specifically need the 25-delta reference point rather than a full options chain scan.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error
- Requested expiration date has no available options data
- Market data unavailable during off-hours or data feed outage
- Payment failure via x402 protocol blocks access
- No near-term expiration within 0-7 DTE available for symbol

## How this service works

MNEMOS 25-delta volatility smile for one symbol

## Output

A JSON object containing 25-delta implied volatility data for the requested symbol, including call and put implied vols at the 25-delta strike, the expiration date used, and related smile/skew metrics derived from live or cached options chain data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "expiration": {
       "type": "string",
       "description": "Optional expiration date (YYYY-MM-DD); nearest 0-7 DTE when omitted"
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object"
    }
   },
   "additionalProperties": false
  }
 },
 "additionalProperties": false
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mnemos-25-delta-volatility-smile-98fccf30/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mnemos-agent.onrender.com](https://www.zero.xyz/host/mnemos-agent.onrender.com/llms.txt)