INDIVIDUAL MCP TOOL

lob_create_postcard

⚠️ SENDS A REAL POSTCARD and charges your Lob account (use a test_ key to avoid real mail/charges).

usefulapi.ionone authenticationAvailability not checked

LIVE ENDPOINT

https://lob.usefulapi.io/mcp

No auth detected

Connect to this endpoint to inspect the live schema for lob_create_postcard and invoke it with your own arguments.

{}

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

CONNECT WITH APPROVAL

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.lob-mcp]
url = "https://lob.usefulapi.io/mcp"
enabled = true

Claude Code

.mcp.json

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

Claude Desktop

Settings → Connectors → Add custom connector

Name: lob-mcp
Remote MCP URL: https://lob.usefulapi.io/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "lob-mcp": {
      "url": "https://lob.usefulapi.io/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

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

Generic MCP

Client-specific MCP configuration

{
  "name": "lob-mcp",
  "transport": "streamable-http",
  "url": "https://lob.usefulapi.io/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

lob_verify_us_address — Validate & standardize a US address, returning deliverability, corrected components, and a confidence score.
lob_verify_intl_address — Validate & standardize a non-US address.
lob_us_zip_lookup — Return the cities and state associated with a US ZIP code.
lob_us_autocomplete — Suggest complete US addresses from a partial primary line — useful for address entry.
lob_list_postcards — List sent/scheduled postcards, newest first.
lob_get_postcard — Retrieve a single postcard by id, including status, PDF url, and expected delivery.
lob_list_letters — List sent/scheduled letters, newest first.
lob_get_letter — Retrieve a single letter by id, including status, PDF url, and tracking.