# CoinOpSelect Cheapest Compute Lookup

> CoinOpSelect Cheapest Compute Lookup is a paid API for AI agents from coinop.publicvm.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Returns the cheapest available compute option for a given type, method, and tier/hours configuration on Base.

## Facts

- Endpoint: GET https://coinop.publicvm.com/api/v1/compute/cheapest?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coinopselect-cheapest-compute-lookup-02b0fd8e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MQOT0FR81j8U_swn8rpFu

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 coinopselect-cheapest-compute-lookup-02b0fd8e
```

Example prompt: What's the cheapest compute option available right now for a medium-tier workload running for 48 hours using the standard method?

## When to prefer this

Use this endpoint when you need to programmatically find the lowest-cost compute option on the Base network by tier and duration, especially within an autonomous agent workflow that pays per call using x402/USDC. Prefer this over manual pricing lookups when optimizing cost for on-chain compute resource selection.

## Known failure modes

- Invalid or unsupported tier value (not small/medium/large/xlarge) may return empty or error response
- Missing required 'type' or 'method' fields returns a validation error
- Payment not provided or insufficient USDC results in 402 Payment Required
- No matching compute options available returns an empty 'cheapest' object
- Network or on-chain issues may cause timeouts or 5xx errors

## How this service works

Paid on-chain token, wallet, contract and research data over x402 on Base.

## Output

Returns a JSON object with a 'query' field (set to 'compute-cheapest') and a 'cheapest' object describing the lowest-cost compute option matching the requested type, method, tier, and hours parameters.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "method": {
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "tier": {
       "type": "string",
       "description": "small|medium|large|xlarge"
      },
      "hours": {
       "type": "string",
       "description": "Hours number"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "query": {
     "type": "string"
    },
    "cheapest": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "query": "compute-cheapest",
  "cheapest": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coinopselect-cheapest-compute-lookup-02b0fd8e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from coinop.publicvm.com](https://www.zero.xyz/host/coinop.publicvm.com/llms.txt)