# tax_compliance_multi

Multi-jurisdiction tax compliance data for international SaaS, cross-border marketplaces and expat services. Five modes: (1) vat_lookup — validate EU VAT numbers live via VIES SOAP (27 EU countries) or UK VRN via HMRC; (2) sales_tax — US state sales tax rates, nexus thresholds (post-Wayfair 2018), digital goods taxability for all 50 states + DC; (3) gst — APAC GST/SST/consumption-tax rates for IN, SG, AU, NZ, MY, JP, KR, TH, ID, PH, VN with reduced rates and registration thresholds; (4) oss_ioss_eligibility — EU One-Stop-Shop and Import-OSS eligibility analysis (EUR 10k OSS threshold, EUR 150 IOSS per-consignment); (5) transfer_pricing_benchmark — OECD/JTPF operating-margin benchmarks by industry and country (20+ sectors, country-specific adjustments). Returns P0/P1/P2 compliance signals: P0=invalid VAT used for zero-rating, P1=taxable digital goods detected/audit risk, P2=filing deadlines/nexus alerts. Keyless — no API key required. Optional env: HMRC_VAT_API_KEY for UK VAT live validation. Cache TTL 24h.

Agent View of the PolicyLayer registry record for `tax_compliance_multi`. HTML page: https://policylayer.com/tools/io-github-getgapup-mcp-knowledge/tax-compliance-multi

## Facts

- Tool: `tax_compliance_multi`
- Server: Mcp Knowledge (`https://mcp.gapup.io`) — https://policylayer.com/tools/io-github-getgapup-mcp-knowledge.md
- Homepage: https://github.com/getgapup/gapup-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 5 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `mode` | string | yes | Tax mode to invoke. |
| `async` | boolean | no | If true, returns a job_id immediately (<200ms) instead of waiting for the result. Poll the result with job_result(job_id). Use for slow tools to avoid client ti |
| `query` | string | yes | Mode-specific query: vat_lookup -> VAT number with country prefix (e.g. 'FR40303265045'); sales_tax -> US state code or name (e.g. 'CA', 'California'); gst -> I |
| `country` | string | no | ISO 3166-1 alpha-2 country code. Required for gst when query is ambiguous. Used in transfer_pricing_benchmark for country-specific OECD adjustments. |
| `transaction_type` | string | no | Transaction type for signal generation. 'digital' triggers GST/sales-tax digital goods warnings. |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "tax_compliance_multi",
    "arguments": {
      "mode": "<mode>",
      "query": "<query>"
    }
  }
}
```

## Why tax_compliance_multi is rated Low

The tool retrieves tax rates, validates VAT numbers, and performs eligibility analysis. All described modes are read/query operations with no indication of writing, executing code, or moving money. Severity is medium because misuse could provide incorrect tax compliance guidance affecting financial decisions, but no direct financial transactions occur.

From the tool's own definition: "'Multi-jurisdiction tax compliance data', 'validate EU VAT numbers live via VIES SOAP', 'US state sales tax rates', 'GST/SST/consumption-tax rates', 'OSS/IOSS eligibility analysis' — all retrieval and lookup operations"

Risk signals: Accepts freeform code/query input (query)

## Use case

AI agents call tax_compliance_multi to retrieve information from Mcp Knowledge without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp Knowledge:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "tax_compliance_multi": {}
  }
}
```

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## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-getgapup-mcp-knowledge · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-getgapup-mcp-knowledge