# ReceiptGuard

> ReceiptGuard — ghguide-receiptguard. Use this tool when you need to verify the authenticity of autonomous agent results and prevent fabrication of tool outputs. ReceiptGuard solves the problem of ensuring data integrity by checking HMAC-signed receipts against expected epistemic claim types, taking inputs of agent results and claim types, and outputting verified receipts or escalation notifications. It is ideal for use in high-stakes decision-making contexts where data accuracy is crucial.

Canonical page: https://skillsregistry.net/skills/ghguide-receiptguard  
JSON: https://api.skillsregistry.net/v1/skills/ghguide-receiptguard

## Description

Prevents autonomous agents from fabricating tool results by verifying HMAC-signed receipts against epistemic claim types, forcing re-grounding or escalation before actions commit.

## Trust

- **Trust score (0–1):** 0.68
- **Verification tier:** scanned
- **Last scanned:** 2026-08-30

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-08-30

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/whnrutmebt)
- **Repository:** <https://github.com/GHGuide/receiptguard>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "ghguide-receiptguard"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/ghguide-receiptguard` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/ghguide-receiptguard/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt