# HyperExtend HIP-4 Outcome Latest Rows

> HyperExtend HIP-4 Outcome Latest Rows is a paid API for AI agents from api.hyperextend.xyz, paid per call via x402, $0.0015/call, status unknown (last checked 2026-09-15).

Returns the most-recent N context rows for a specified HIP-4 prediction market outcome-side coin

## Facts

- Endpoint: GET https://api.hyperextend.xyz/v1/outcome_ctx/%231000/latest
- Price: $0.0015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hyperextend-hip-4-outcome-latest-rows-77dac74b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vzsjLiORUy12xeF00mCFg

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 hyperextend-hip-4-outcome-latest-rows-77dac74b
```

Example prompt: Give me the last 20 context rows for HIP-4 outcome coin #1000 from HyperExtend.

## When to prefer this

Use this endpoint when you need the most recent snapshot of HIP-4 outcome context rows for a specific outcome-side coin and don't need to specify a historical time window. Prefer this over the windowed endpoint when you just want the latest N records without specifying start/end times. Best for real-time monitoring, dashboards, or feeding recent state into downstream analysis.

## Known failure modes

- Invalid or malformed coin identifier (e.g. missing '#' prefix or non-existent outcome number) returns 4xx error
- n parameter out of range or not an integer returns validation error
- Endpoint returns empty array if no rows exist yet for the given coin
- Payment not included or insufficient USDC balance returns 402 Payment Required
- Network timeout or service unavailability returns 5xx error

## How this service works

The most-recent N HIP-4 outcome-side rows (≤5000). Priced per row ($0.000025 premium); served live.

## Output

An array of the most-recent N outcome context rows for the specified HIP-4 outcome-side coin, including fields such as mark price, circulating supply, funding rates, and volume data, ordered by recency.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "pathParams": {
   "coin": "#1000"
  },
  "queryParams": {
   "n": 20
  }
 }
}
```

## 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"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "coin"
     ],
     "properties": {
      "coin": {
       "type": "string",
       "description": "Encoded HIP-4 outcome-side coin '#<10*outcome+side>' (e.g. #1000)"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "n": {
       "type": "integer"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hyperextend-hip-4-outcome-latest-rows-77dac74b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hyperextend.xyz](https://www.zero.xyz/host/api.hyperextend.xyz/llms.txt)