# ENTROPY.RIP Decision Oracle

> ENTROPY.RIP Decision Oracle is a paid API for AI agents from entropy.rip, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Randomly selects one option from a provided list of choices, returning a single decision string

## Facts

- Endpoint: GET https://entropy.rip/api/entropy/decision
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/entropy-rip-decision-oracle-fbf932ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A5q_nbmTQ9MN-jnZTB55S

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 entropy-rip-decision-oracle-fbf932ad
```

Example prompt: I can't decide between 'pizza', 'sushi', or 'tacos' for dinner — use the entropy.rip decision oracle to randomly pick one of those three options for me.

## When to prefer this

Use this endpoint when an AI agent needs an external, unbiased random selection from a discrete set of options — especially in agentic workflows where the agent should not self-select or when cryptographic randomness or proof-of-decision is desired. Prefer this over local random functions when auditability or externalizing the decision matters.

## Known failure modes

- Missing required 'options' query parameter returns an error
- Empty options list may return an error or undefined behavior
- Single option passed may always return that option
- Payment failure (x402) if USDC payment is not included
- Network timeout or 5xx if the service is unavailable

## How this service works

Make a random decision from options

## Output

Returns a JSON object with a single 'decision' field containing the selected option from the provided comma-separated list (e.g. {"decision": "Yes"}).

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "options": "status,health,availability"
  }
 },
 "output": {
  "type": "object",
  "example": {
   "status": "operational",
   "timestamp": "2024-01-15T10:30:00Z"
  }
 }
}
```

## 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",
     "description": "type"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string",
     "description": "method"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "options"
     ],
     "properties": {
      "options": {
       "type": "string",
       "description": "Comma-separated list of options"
      }
     },
     "description": "queryParams"
    }
   },
   "description": "input",
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "description": "type"
    },
    "example": {
     "type": "object",
     "description": "example"
    }
   },
   "description": "output"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "decision": "Yes"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/entropy-rip-decision-oracle-fbf932ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from entropy.rip](https://www.zero.xyz/host/entropy.rip/llms.txt)