# Cluster Protocol - Liberation Engine for Internet Capital Market

> Cluster Protocol - Liberation Engine for Internet Capital Market is a paid API for AI agents from api.clusterprotocol.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

## Facts

- Endpoint: POST https://api.clusterprotocol.ai/v1/rerank
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/v1-rerank-2efb0da0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cxX6dEcIlHPxfwnZ2IKy7

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 v1-rerank-2efb0da0 -d '<json body>'
```

## How this service works

Liberation Engine for Internet Capital Market

## Request schema (JSON Schema)

```json
{
 "input": {
  "type": "object",
  "required": [
   "model",
   "query",
   "documents"
  ],
  "properties": {
   "model": {
    "type": "string",
    "description": "Reranker model slug"
   },
   "query": {
    "type": "string",
    "description": "Search query"
   },
   "top_n": {
    "type": "integer",
    "description": "Number of top results"
   },
   "documents": {
    "type": "array",
    "items": {
     "type": "string"
    },
    "description": "Documents to rerank"
   }
  }
 },
 "output": {
  "type": "object",
  "properties": {
   "results": {
    "type": "array",
    "items": {
     "type": "object",
     "properties": {
      "index": {
       "type": "integer"
      },
      "document": {
       "type": "string"
      },
      "relevance_score": {
       "type": "number"
      }
     }
    }
   }
  }
 },
 "properties": {
  "input": {
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/v1-rerank-2efb0da0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.clusterprotocol.ai](https://www.zero.xyz/host/api.clusterprotocol.ai/llms.txt)