PlateQuery MCP — US License Plate & Vehicle Information

com.platequery由 platequery.com 發布官方發布者v1.0.0更新於 Oct 24, 2026

License plate lookup for AI agents: plate messages and ALPR history via PlateQuery. OAuth 2.1.

已驗證Streamable HTTP可網頁執行位置與生活

概覽

AI 產生的概覽

遠端 MCP 端點，讓助理透過 PlateQuery 查詢美國車牌與車輛資訊，包括車牌留言與 ALPR 歷史紀錄。

可以做什麼
  • 查詢美國車牌及與其相關的車輛資訊。
  • 透過 PlateQuery 取得車牌留言與 ALPR（自動車牌辨識）歷史紀錄。
  • 清單中未列出具體工具，因此此處不說明確切的作業項目。
適用情境
適用於助理需要在調查、查核或研究流程中把美國車牌解析為車輛資訊，或檢視 ALPR 歷史紀錄的情境。
執行需求
使用位於 api.platequery.com 的遠端 streamable HTTP 端點，不需要本機套件或執行環境。需要 OAuth 驗證（描述中為 OAuth 2.1），因此需要在該服務商擁有帳號。未宣告任何環境變數或請求標頭。
安裝前請注意
存取由 OAuth 控管，需以 PlateQuery 帳號登入並授權助理存取。車牌與 ALPR 資料屬於個人及位置相關資訊，查詢前請考量隱私、合法性依據與資料保留問題。服務商可能依用量計費，但輸入中未說明價格。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 PlateQuery MCP — US License Plate & Vehicle Information，將其新增到工作區。
  2. 連接 所需的 憑證。它們會被私密儲存，絕不會在公開頁面上展示。
  3. 為需要使用其工具的對話啟用該服務。

Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。

交給代理程式安裝

把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式，或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南，先向你展示發布者、端點和登入方式，經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。

閱讀 https://sourceweft.com/mcp/com.platequery%2Fplate-api/install.md，並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前，先告訴我它的發布者、端點和登入方式，等我確認。不要把 API 金鑰寫進命令或我會提交的檔案；問我金鑰應從哪裡取得。

檢視代理程式所依據的安裝指南

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。 客戶端會在首次連接時完成 OAuth 登入。

{
  "mcpServers": {
    "platequery-us-license-plate-vehicle-info": {
      "type": "http",
      "url": "https://api.platequery.com/mcp"
    }
  }
}

README

PlateQuery MCP — US License Plate & Vehicle Information

License plate lookup for AI agents, built on PlateQuery — the license plate lookup site people use to notify vehicle owners, report bad driving, or flag illegal parking. This Model Context Protocol server lets an agent read those same messages for any U.S. license plate, plus public ALPR (automated license plate reader) sighting history from the Flock Safety camera network, by state or region.

This repository holds public documentation for the server. The implementation lives in PlateQuery's main application repository, which is closed-source.

Tools

ToolCostDescription
check_creditsFreeCheck your account's remaining credit balance. Doesn't count against the rate limit.
lookup_plate1 creditQuick summary for one plate: privacy status, the latest 3 messages (plus a total count), and a count of ALPR mentions, if any are public.
list_plate_messages1 creditFull, paginated list of messages posted about a plate.
list_plate_alpr_mentions1 creditFull, paginated ALPR search history for a plate, including the searching agency and source.
post_plate_messageFreePost a new message about a plate -- e.g. "reported for speeding" -- optionally with vehicle make/model/year/color and an approximate location. Requires the write scope. See Posting messages below.

A plate marked private by its owner returns zeroed messages/mentions to everyone except that owner. Free plan grants a starting credit balance on signup; additional credits are purchased in bulk packages — see api-settings for current pricing. Paid tools are rate-limited per account; call check_credits as often as you like to check balance without spending a credit.

Posting messages

post_plate_message is free but deliberately conservative, since it's the only tool that writes anything:

  • Requires a PlateQuery account with a confirmed email.
  • Rate-limited: 2 posts/minute, 10 posts/day, 3 posts/day about the same plate.
  • Not published immediately. Every post goes into the same moderation queue a website submission does -- it's invisible (and the plate's followers aren't notified) until a human moderator approves it.
  • vehicle_make/vehicle_model/vehicle_year/vehicle_color and location are all optional free text -- location should be an approximate description (e.g. "Hwy 37 near Los Altos, CA" or a cross-street), never precise GPS coordinates.

Authentication

The server is OAuth 2.1 only — no manual API keys. It supports PKCE and dynamic client registration (DCR), so a compliant MCP client (Claude, or any client following the MCP authorization spec) can connect by:

  1. Pointing at https://api.platequery.com/mcp.
  2. Following the WWW-Authenticate challenge to discover https://platequery.com as the authorization server (RFC 9728 protected resource metadata).
  3. Registering itself dynamically (RFC 7591) and running the standard Authorization Code + PKCE flow.
  4. Signing in with (or creating) a PlateQuery account when prompted.

No client secret or pre-issued API key is needed — sign-in happens in the browser the first time an agent connects.

Two scopes exist: read (the default -- covers every tool except post_plate_message) and write (required for post_plate_message, opt-in only). A client must explicitly request write at connect time to be able to post; an existing read-only connection can't post without reconnecting.

Adding it to an MCP client

Most MCP clients (including Claude) let you add a remote server by URL. Add https://api.platequery.com/mcp as a Streamable HTTP connector and follow the sign-in prompt on first use.

Support

Questions or issues: https://platequery.com/contact/

來源：README.md，提交 16d6af4

工具

0
該伺服器需要登入，因此 SourceWeft 無法在沒有帳號的情況下讀取其工具，也未收錄。已連接帳號所能看到的內容可能因帳號及其權限而異。

版本歷史

1
  1. v1.0.0最新Sep 16, 2026

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