# bts_transport_border_trend

Return a bounded monthly history for one official BTS land-border port and one consistent crossing measure from the self-hosted snapshot. Includes exact month, crossing count, stable port identity, pagination, source hash, and provenance. Use this for 'monthly truck crossings at Laredo', 'pedestrian crossings at San Ysidro since 2023', or a reproducible port-volume chart. Counts inbound crossing events, not unique vehicles or people.

Agent View of the PolicyLayer registry record for `bts_transport_border_trend`. HTML page: https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bts-transport-border-trend

## Facts

- Tool: `bts_transport_border_trend`
- Server: Livedatalink (`https://livedatalink.ai/mcp`) — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink.md
- Homepage: https://github.com/blackboxfoundry/livedatalink
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 7 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `port` | string | yes | Exact BTS four-digit port code or an unambiguous U.S. land-border port name. Search first when needed. |
| `limit` | integer | no | Maximum monthly observations. Default 24. |
| `offset` | integer | no | Observations to skip. Default 0. |
| `measure` | string | yes | Official BTS crossing measure. Measures have different units and must not be added together. |
| `end_month` | string | no | Calendar month in YYYY-MM format. |
| `start_month` | string | no | Calendar month in YYYY-MM format. |
| `response_format` | string | no | Human-readable markdown or machine-readable JSON. Default markdown. |

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": "bts_transport_border_trend",
    "arguments": {
      "port": "<port>",
      "measure": "<measure>"
    }
  }
}
```

## Why bts_transport_border_trend is rated Low

Even though bts_transport_border_trend only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

## Use case

AI agents call bts_transport_border_trend to retrieve information from Livedatalink 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 Livedatalink:

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

## Other tools on Livedatalink (380)

- `beneficial_owner_screen` — Destructive — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/beneficial-owner-screen.md
- `bea_state_economic_profile` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-state-economic-profile.md
- `bts_transport_border_activity_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bts-transport-border-activity-pack.md
- `cftc_cot_evidence_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/cftc-cot-evidence-pack.md
- `clinical_site_selector` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/clinical-site-selector.md
- `edgar_recent_filings` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/edgar-recent-filings.md
- `entity_dossier` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/entity-dossier.md
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- `fed_board_h15_yield_curve` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/fed-board-h15-yield-curve.md
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- `govinfo_legislation_evidence_pack` — Execute — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/govinfo-legislation-evidence-pack.md
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- `affordable_housing_refinance_evidence_pack` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/affordable-housing-refinance-evidence-pack.md
- `air_quality` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/air-quality.md
- `bank_health_report` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bank-health-report.md
- `bea_compare_states` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-compare-states.md
- `bea_search_state_indicators` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-search-state-indicators.md
- `bea_state_economic_trend` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bea-state-economic-trend.md
- `bls_indicator` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bls-indicator.md
- `bls_series` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bls-series.md
- `book_details` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-details.md
- `book_fulltext_search` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-fulltext-search.md
- `book_get_text` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-get-text.md
- `book_search` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-search.md
- `book_status` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/book-status.md
- `bounce_scanner` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bounce-scanner.md
- `bts_transport_compare_ports` — Read — https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink/bts-transport-compare-ports.md
- …and 350 more: https://policylayer.com/tools/io-github-blackboxfoundry-livedatalink.md

## 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-blackboxfoundry-livedatalink · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-blackboxfoundry-livedatalink