Lob MCP by usefulapi

io.usefulapi由 usefulapi.io 發布官方發布者v1.37.5更新於 Nov 8, 2026

Verify US & international addresses and send physical mail (postcards, letters, checks) via Lob.

發布方自己的服務：Ably MCP by usefulapi

已驗證Streamable HTTP可網頁執行位置與生活商業與電商

概覽

AI 產生的概覽

託管的 Lob 伺服器，讓助理驗證美國與國際地址，並寄送、查詢實體明信片、信件與支票。

可以做什麼
  • 驗證並標準化美國與國際地址，查詢美國郵遞區號對應城市，自動補全不完整的美國地址
  • 列出並檢視明信片、信件、支票、自郵寄件、已儲存地址與範本
  • 建立可重複使用的地址紀錄，作為寄件人或收件人
  • 寄送真實明信片與信件，並在寄送日期前取消已排程的明信片
  • 查看本月工具呼叫用量、提出功能需求，以及管理或取消付費方案
適用情境
適合涉及實體郵件或地址資料的工作：判斷地址是否可投遞、清理地址清單，或在對話中寄送並追蹤明信片與信件。
執行需求
透過 streamable HTTP 連線遠端端點 lob.usefulapi.io，無需本機安裝。設定時只填 URL，透過 OAuth 登入，首次連線時貼上 Lob API 金鑰。需要 Lob 帳號；此伺服器另有免費額度，每月 50 次工具呼叫。
安裝前請注意
伺服器會依使用者儲存你的 Lob API 金鑰。寄送明信片或信件會實際投遞並計入 Lob 帳號費用，使用 test 金鑰可避免真實寄送與扣款。僅能在寄送日期前取消。付費方案透過 Stripe 結帳連結付款，取消後當期不退費。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 Lob MCP by usefulapi，將其新增到工作區。
  2. 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/io.usefulapi%2Flob/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。

{
  "mcpServers": {
    "lob-by-usefulapi": {
      "type": "http",
      "url": "https://lob.usefulapi.io/mcp"
    }
  }
}

README

Lob MCP by usefulapi

Verify addresses and send physical mail via Lob, from Claude, Cursor, or any MCP client. Hosted, no local install — connect with your Lob API key.

Live endpoint: https://lob.usefulapi.io/mcp · Homepage: https://usefulapi.io/lob

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://lob.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http lob https://lob.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
json
{  "mcpServers": {    "lob": {      "url": "https://lob.usefulapi.io/mcp"    }  }}

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Lob credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/lob/

On first connect you'll paste your Lob API key. It's validated, stored per-user, and scoped to you.

Tools

ToolTypeWhat it does
lob_verify_us_addressreadVerify a US address
lob_verify_intl_addressreadVerify an international address
lob_us_zip_lookupreadLook up a US ZIP code
lob_us_autocompletereadAutocomplete a US address
lob_list_postcardsreadList postcards
lob_get_postcardreadGet a postcard
lob_list_lettersreadList letters
lob_get_letterreadGet a letter
lob_list_checksreadList checks
lob_get_checkreadGet a check
lob_list_self_mailersreadList self-mailers
lob_list_addressesreadList saved addresses
lob_get_addressreadGet a saved address
lob_list_templatesreadList templates
lob_create_addresswriteSave an address record
lob_create_postcardwriteSend a postcard (COSTS MONEY)
lob_create_letterwriteSend a letter (COSTS MONEY)
lob_cancel_postcardwriteCancel a scheduled postcard
lob_usage_statusmetaUsage status (free-tier meter)
lob_request_featuremetaRequest a missing feature
lob_upgrademetaUpgrade to Pro or Pro+
lob_cancel_subscriptionmetaCancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro$9/mo or $90/yr (2 months free)Unlimited*

*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].

Pro covers this server only. Subscribe with lob_upgrade (it returns a Stripe Checkout link). Cancel any time with lob_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running lob_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT — see LICENSE. Documentation only; the server is hosted.

來源：servers/lob/README.md，提交 4046075

工具

18

lob_verify_us_address

Verify a US address

Validate & standardize a US address, returning deliverability, corrected components, and a confidence score. Pass either a single freeform `address` string OR structured `primary_line`/`city`/`state`/`zip_code`. Non-mutating (no mail sent). Lob API: POST /v1/us_verifications.

輸入參數citystateaddresszip_codeprimary_linesecondary_line

lob_verify_intl_address

Verify an international address

Validate & standardize a non-US address. `country` (2-letter ISO code) is required. Non-mutating (no mail sent). Lob API: POST /v1/intl_verifications.

輸入參數citystatecountry必填postal_codeprimary_line必填secondary_line

lob_us_zip_lookup

Look up a US ZIP code

Return the cities and state associated with a US ZIP code. Non-mutating. Lob API: POST /v1/us_zip_lookups.

輸入參數zip_code必填

lob_us_autocomplete

Autocomplete a US address

Suggest complete US addresses from a partial primary line — useful for address entry. Non-mutating. Lob API: POST /v1/us_autocompletions.

輸入參數citystatezip_codeaddress_prefix必填

lob_list_postcards

List postcards

List sent/scheduled postcards, newest first. Lob API: GET /v1/postcards.

輸入參數afterlimitbefore

lob_get_postcard

Get a postcard

Retrieve a single postcard by id, including status, PDF url, and expected delivery. Lob API: GET /v1/postcards/{id}.

輸入參數id必填

lob_list_letters

List letters

List sent/scheduled letters, newest first. Lob API: GET /v1/letters.

輸入參數afterlimitbefore

lob_get_letter

Get a letter

Retrieve a single letter by id, including status, PDF url, and tracking. Lob API: GET /v1/letters/{id}.

輸入參數id必填

lob_list_checks

List checks

List sent/scheduled checks, newest first. Lob API: GET /v1/checks.

輸入參數afterlimitbefore

lob_get_check

Get a check

Retrieve a single check by id, including amount, status, and check number. Lob API: GET /v1/checks/{id}.

輸入參數id必填

lob_list_self_mailers

List self-mailers

List sent/scheduled self-mailers, newest first. Lob API: GET /v1/self_mailers.

輸入參數afterlimitbefore

lob_list_addresses

List saved addresses

List saved address records, newest first. Lob API: GET /v1/addresses.

輸入參數afterlimitbefore

lob_get_address

Get a saved address

Retrieve a single saved address record by id. Lob API: GET /v1/addresses/{id}.

輸入參數id必填

lob_list_templates

List templates

List saved HTML templates usable as postcard/letter artwork. Lob API: GET /v1/templates.

輸入參數afterlimitbefore

lob_create_address

Save an address record

Create a reusable saved address record (does NOT send any mail). Returns an address id (adr_…) usable as `to`/`from` in mail tools. Lob API: POST /v1/addresses.

輸入參數namecompanyaddress_zipdescriptionaddress_cityaddress_line1必填address_line2address_stateaddress_country

lob_create_postcard

Send a postcard (COSTS MONEY)

⚠️ SENDS A REAL POSTCARD and charges your Lob account (use a test_ key to avoid real mail/charges). `to` and `from` accept an existing address id (adr_…) or an inline address object. `front`/`back` accept an HTML string, a hosted asset URL, or a template id (tmpl_…). Cancelable only before `send_date`. Lob API: POST /v1/postcards.

輸入參數to必填back必填fromsizefront必填use_typemail_typesend_datedescriptionmerge_variables

lob_create_letter

Send a letter (COSTS MONEY)

⚠️ SENDS A REAL LETTER and charges your Lob account (use a test_ key to avoid real mail/charges). `to`/`from` accept an address id (adr_…) or inline object. `file` accepts an HTML string, a hosted PDF/URL, or a template id (tmpl_…). `color` is required. Cancelable only before `send_date`. Tracked mail: `extra_service` = certified (U.S. addresses: tracking + proof of delivery), certified_return_receipt (certified + the recipient's electronic signature) or registered (international addresses only); extra cost, first class only, not for us_legal size. The tracking number is on the letter (lob_get_letter). Lob API: POST /v1/letters.

輸入參數to必填file必填from必填color必填use_typemail_typesend_datedescriptiondouble_sidedextra_servicemerge_variablesaddress_placement

lob_cancel_postcard

Cancel a scheduled postcard

Cancel a postcard before its send_date so it is never mailed (and not billed). Fails if the send window has passed. Lob API: DELETE /v1/postcards/{id}.

輸入參數id必填

版本歷史

21
  1. v1.37.4Nov 7, 2026
  2. v1.36.3Nov 5, 2026
  3. v1.36.2Nov 5, 2026
  4. v1.36.1Nov 4, 2026
  5. v1.36.0Nov 3, 2026
  6. v1.35.1Nov 3, 2026
  7. v1.34.0Nov 1, 2026
  8. v1.32.0Oct 31, 2026
  9. v1.31.0Oct 31, 2026
  10. v1.30.2Oct 30, 2026
  11. v1.30.0Oct 30, 2026
  12. v1.24.0Oct 26, 2026
  13. v1.21.3Oct 25, 2026
  14. v1.21.0Oct 25, 2026
  15. v1.20.0Oct 24, 2026
  16. v1.17.0Oct 23, 2026
  17. v1.16.4Oct 22, 2026
  18. v1.16.3Oct 21, 2026
  19. v1.11.1Oct 9, 2026
  20. v1.10.0Oct 9, 2026
  21. v1.0.1Sep 16, 2026

評分

已滿足適用檢查項的 100%

該評分衡量此收錄條目的完整程度，依據註冊中心條目、端點與公開來源計算得出。它不是對伺服器本身的評價，也不表示伺服器安全或目前可用：可連通性是帶日期的檢查結果，評分也不包含安裝量或使用者評價。

  • 近 30 天內可連通必需25 分
  • 已宣告認證方式必需10 分
  • 已列出工具必需15 分
  • 描述必需15 分
  • 圖示10 分
  • 文件15 分
  • 授權條款10 分

其他 Usefulapi 整合

Ably MCP by usefulapi

io.usefulapi官方發布者

面向 Ably 即時訊息的託管 MCP 伺服器：檢視頻道歷史、線上狀態與佔用情形，發布訊息，並查看應用程式用量與設定。

Streamable HTTP可網頁執行
雲端與基礎設施15 個工具Nov 7, 2026

Woffu MCP by usefulapi

io.usefulapi官方發布者

託管式唯讀 MCP 伺服器，讓助理查詢 Woffu 公司的使用者、勞動契約、部門與辦公地點。

Streamable HTTP可網頁執行
商業與電商5 個工具Nov 7, 2026

White Label Loyalty MCP by usefulapi

io.usefulapi官方發布者

託管的 White Label Loyalty MCP 伺服器：瀏覽獎勵、查看客戶點數錢包與等級進度，並以點數購買獎勵。

Streamable HTTP可網頁執行
商業與電商5 個工具Nov 7, 2026

Weekdone MCP by usefulapi

io.usefulapi官方發布者

託管的 Weekdone 連接器，讓助理讀取週報、團隊、目標與 KPI，並新增報告項目、留言和 KPI 數值。

Streamable HTTP可網頁執行
資料與分析15 個工具Nov 7, 2026

WebinarKit MCP by usefulapi

io.usefulapi官方發布者

託管式唯讀 MCP 伺服器，讓助理列出 WebinarKit 的網路研討會、場次時間、系列、會議以及白標子帳戶。

Streamable HTTP可網頁執行
商業與電商5 個工具Nov 7, 2026