# LimitGuard Reputation Score with Bayesian Trust Decay

> LimitGuard Reputation Score with Bayesian Trust Decay is a paid API for AI agents from api.limitguard.ai, paid per call via x402, $0.65/call, status unknown (last checked 2026-09-14).

Returns a reputation score with Bayesian trust decay analysis, confidence intervals, and trend for a named entity based on prior trust data

## Facts

- Endpoint: POST https://api.limitguard.ai/v1/reputation/score
- Price: $0.65/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/limitguard-reputation-score-with-bayesian-trust-decay-22634e4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g6wAiRrrli8FYvq4BeLgO

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-reputation-score-with-bayesian-trust-decay-22634e4e -d '<json body>'
```

Example prompt: What's the Bayesian reputation score and trust trend for 'Acme Logistics BV' — they're currently in the 'high-risk' cluster with a trust score of 62, last verified 30 days ago with 5 verifications on record?

## When to prefer this

Use this endpoint when you have prior trust data for an entity (existing trust score, cluster, and verification history) and need a temporally-decayed, Bayesian-updated reputation score with a confidence interval and trend — rather than a fresh full entity check from scratch. Ideal for periodic re-scoring of known counterparties rather than first-time entity lookups.

## Known failure modes

- Missing required fields (entity_name, trust_score, cluster, last_verified_at) returns a 400 validation error
- Invalid trust_score outside 0-100 range may cause computation errors
- Very old last_verified_at timestamps may result in heavily decayed scores near zero
- Unknown cluster assignments may produce lower confidence intervals
- Service unavailable returns 503; payment issues return 402

## How this service works

Reputation scoring with Bayesian trust decay analysis. Tracks entity trust over time with confidence intervals.

## Output

Returns a numeric reputation score (0-100), a confidence value (0-1), a trend indicator (e.g. 'stable', 'declining', 'improving'), and a verification count reflecting how the entity's trust has evolved over time under Bayesian decay modeling.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "note": {
   "type": "string"
  },
  "input": {
   "type": "object",
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "required": [
    "entity_name",
    "trust_score",
    "cluster",
    "last_verified_at"
   ],
   "properties": {
    "cluster": {
     "type": "string",
     "description": "Current cluster assignment"
    },
    "entity_name": {
     "type": "string",
     "description": "Legal entity name"
    },
    "trust_score": {
     "type": "integer",
     "description": "Latest trust score (0-100)"
    },
    "last_verified_at": {
     "type": "number",
     "description": "Unix timestamp of last verification"
    },
    "verification_count": {
     "type": "integer",
     "description": "Times entity verified"
    }
   }
  },
  "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"
  },
  "cachedTierAvailable": {
   "type": "boolean"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {
  "trend": "stable",
  "confidence": 0.87,
  "reputation_score": 92,
  "verification_count": 12
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/limitguard-reputation-score-with-bayesian-trust-decay-22634e4e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.limitguard.ai](https://www.zero.xyz/host/api.limitguard.ai/llms.txt)