# LimitGuard Trust Score

> LimitGuard Trust Score is a paid API for AI agents from limitguard.ai, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns a numeric trust score (0-100) with cluster assignment and recommendation for a given entity identifier.

## Facts

- Endpoint: POST https://limitguard.ai/v1/mcp/trust-score
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/limitguard-trust-score-97a64ec1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7BqvqjKd5kNFeUuJDh4hu

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 limitguard-trust-score-97a64ec1 -d '<json body>'
```

Example prompt: What is the LimitGuard trust score for entity 'acme-corp-eu-42'? I need to know their trust cluster and whether they're safe to transact with.

## When to prefer this

Use this endpoint when you need a fast, lightweight trust score with cluster classification for a single entity and do not require the full compliance report, KYB details, or multi-layer verification. Ideal for quick pre-transaction trust gating in agent-to-agent or agent-to-business workflows.

## Known failure modes

- Missing or empty entity_id returns a 400 validation error
- Unknown or unrecognized entity_id may return a low trust score or a not-found error
- Payment failure (x402) results in a 402 Payment Required response blocking the call
- Network timeout or server error returns a 5xx response
- Malformed input schema returns a 422 unprocessable entity error

## How this service works

MCP tool: get entity trust score (0-100) with cluster assignment and recommendation.

## Output

Returns a JSON object containing a numeric trust_score (0-100) and a cluster label (e.g. 'verified') indicating the entity's trust tier, along with a recommendation for how to proceed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "required": [
    "entity_id"
   ],
   "properties": {
    "entity_id": {
     "type": "string",
     "description": "Entity identifier"
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  },
  "sandbox": {
   "type": "object",
   "required": [
    "url"
   ],
   "properties": {
    "url": {
     "type": "string"
    },
    "curl": {
     "type": "string"
    },
    "note": {
     "type": "string"
    }
   }
  },
  "recovery": {
   "type": "object",
   "required": [
    "url"
   ],
   "properties": {
    "url": {
     "type": "string"
    },
    "curl": {
     "type": "string"
    }
   }
  },
  "documentation_url": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {
  "cluster": "verified",
  "trust_score": 87
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/limitguard-trust-score-97a64ec1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from limitguard.ai](https://www.zero.xyz/host/limitguard.ai/llms.txt)