# LimitGuard Reputation Score with Bayesian Trust Decay

> LimitGuard Reputation Score with Bayesian Trust Decay is a paid API for AI agents from limitguard.ai, paid per call via x402, $0.65/call, status unknown (last checked 2026-10-11).

Computes a reputation score for a named entity using Bayesian trust decay analysis, returning a scored result with trend and confidence interval over time

## Facts

- Endpoint: POST https://limitguard.ai/v1/reputation/score?utm_source=zero.xyz
- Price: $0.65/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/limitguard-reputation-score-with-bayesian-trust-decay-4f89aecd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S0sznNZpLjP8rYQ4nJHTC

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-4f89aecd -d '<json body>'
```

Example prompt: Can you run a Bayesian reputation score on 'Acme Trading BV' — their current trust score is 74, they're in cluster 'high-frequency-b2b', last verified 3 days ago, and they've been verified 8 times total?

## When to prefer this

Use this endpoint when you already have a baseline trust score and cluster assignment for an entity and want a time-decayed, Bayesian-updated reputation score with a confidence interval. Prefer this over the quick risk score endpoint when you have richer entity history (verification count, cluster, last verification timestamp) and need a statistically grounded output rather than a lightweight heuristic score.

## Known failure modes

- Missing required fields (entity_name, trust_score, cluster, last_verified_at) returns 400 validation error
- Invalid trust_score outside 0-100 integer range returns 422 unprocessable entity
- Stale last_verified_at timestamp may result in low confidence output rather than an error
- Payment failure via x402 returns 402 Payment Required before processing
- Unrecognized cluster string may reduce scoring accuracy without explicit error

## How this service works

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

## Output

Returns a reputation_score (0-100), a trend label (e.g. 'stable', 'declining', 'improving'), a confidence value between 0 and 1, and the verification_count used in the calculation.

## 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_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"
  }
 }
}
```

## 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-4f89aecd/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)