# claude-code-invoice-guard

> claude-code-invoice-guard — mikko-lab-claude-code-invoice-guard. Use this tool when you need to ensure accuracy and compliance in VAT-critical invoice workflows, as it provides a deterministic guardrail that refuses uncertain inputs rather than guessing. This tool solves problems related to invoice processing errors and non-compliance with VAT regulations. It integrates with LLM agents, taking in invoice data and outputting validated and compliant invoices, making it ideal for use cases where precision and adherence to tax laws are crucial.

Canonical page: https://skillsregistry.net/skills/mikko-lab-claude-code-invoice-guard  
JSON: https://api.skillsregistry.net/v1/skills/mikko-lab-claude-code-invoice-guard

## Description

Deterministic guardrail (refuse, don't guess) for an LLM agent on a VAT-critical invoice workflow: skill + subagent + MCP server + PreToolUse hook. Portfolio/demo plugin.

## Trust

- **Trust score (0–1):** 0.98
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/mikko-lab/claude-code-invoice-guard)

## 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": "mikko-lab-claude-code-invoice-guard"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/mikko-lab-claude-code-invoice-guard` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/mikko-lab-claude-code-invoice-guard/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