# GoAI Moat Cross-Border Tax Compliance

> VAT registration, US sales-tax nexus and filing calendars for cross-border sellers

- name: com.goaimoat/cross-border-tax
- version: 1.0.0
- connection class: unknown (unknown)
- trust: 62/100 flags: duplicate-repo, unreachable
- quality: 83/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.goaimoat%2Fcross-border-tax
- tools: https://api.protogrid.dev/v1/servers/com.goaimoat%2Fcross-border-tax/tools

**Not classified yet.** The remote endpoints have not been probed successfully, or the listing has nothing to connect to.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "cross-border-tax": {
      "type": "http",
      "url": "https://tax.mcp.goaimoat.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 0
- freshness: 100
- provenance: 85
- drivers: +repository +dns-namespace +website -unreachable(7 failures) +updated-26d-ago -duplicate-repo(15 names)
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 83/100 (good)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: us_sales_tax_nexus (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); vat_registration_guide (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); tax_filing_planner (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 415 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 3 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 415 tokens to load them all
- tool set hash: 07573ba65847178cef8a2581308ad7ce
- tools last changed: 2026-09-25T01:09:21.970Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.goaimoat/cross-border-tax.svg)](https://protogrid.dev/servers/com.goaimoat/cross-border-tax)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-09-25 `tax_filing_planner` changed (inputSchema)
- 2026-09-25 `us_sales_tax_nexus` changed (inputSchema)
- 2026-09-25 `vat_registration_guide` changed (inputSchema)

Full history: https://api.protogrid.dev/v1/servers/com.goaimoat%2Fcross-border-tax/changes

## Remotes

- https://tax.mcp.goaimoat.com/mcp (streamable-http, auth none, reachable false, uptime30d 0.8367347)

## Packages

_none_

## Tools (3)

- `tax_filing_planner`: 申报义务日历：申报频率 + 截止日节奏 + 记录保存要求 + 逾期风险（UK/EU/US）。

参数：
- market: 目标市场，"UK" / "EU" / "US"

返回：该市场的申报频率、截止日节奏、记录保存年限、逾期风险。
- `us_sales_tax_nexus`: 美国销售税 nexus 判定：经济 nexus / 实体 nexus → 需注册州清单 + 市场促进者代收提示。

参数：
- states_sales: 各州销售额（美元）与交易笔数，如 {"CA": {"sales": 520000, "transactions": 50},
  "TX": {"sales": 30000, "transactions": 300}}（缺省则返回框架说明）
- has_physical_presence: 是否在美有实体存在（自有仓库/办公室/员工/返货点）

返回：逐州 nexus 判定 + 市场促进者（Amazon/Walmart/eBay）代收提示 + 实体 nexus 警示。
- `vat_registration_guide`: VAT 注册决策树（UK/EU）：判断是否需要注册、门槛、OSS/IOSS 适用、自愿注册建议。

参数：
- country: 目标市场，支持 "UK" / "EU"（或具体国家码如 "DE"）
- seller_type: 卖家设立状态，"established"=当地设立主体，"netp"=非当地设立主体（如中国卖家）
- annual_turnover_estimate: 预估年应税销售额（本地货币：UK 用英镑、EU 用欧元）
- has_local_stock: 是否在当地有库存（如 FBA UK / 欧盟仓）

返回：是否需要注册 + 门槛 + OSS/IOSS 适用 + 市场促进者提示 + 自愿注册建议 + 逾期风险。