# Lob MCP by usefulapi (io.usefulapi/lob): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.usefulapi%2Flob/versions/latest)
- Connected to: https://lob.usefulapi.io/mcp
- Homepage: https://usefulapi.io/lob/
- Repository: https://github.com/m190/usefulapi-mcp
- Scoring rules: v2
- Tools: 18
- Average: 44.7 / 100 (Cloudy)
- Near-identical pairs: 6

This page shows how Lob MCP by usefulapi (io.usefulapi/lob)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

No server-wide issues.

## Tools

- `lob_list_addresses`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `lob_list_checks`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `lob_list_letters`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `lob_list_postcards`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `lob_list_self_mailers`: 35 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `lob_list_templates`: 39 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `lob_get_address`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.
- `lob_get_check`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.
- `lob_get_letter`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.
- `lob_get_postcard`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: id.
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.
- `lob_us_autocomplete`: 44 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `lob_verify_intl_address`: 45 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: secondary_line, city, postal_code.
  - Minor: String arguments with no constraint or example: primary_line, secondary_line, city, state, postal_code.
  - Minor: Says nothing about what it returns.
- `lob_verify_us_address`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: city.
  - Minor: String arguments with no constraint or example: city, zip_code.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `lob_cancel_postcard`: 50 / 100
  - Minor: Says nothing about what it returns.
  - Minor: Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.
- `lob_create_postcard`: 54 / 100
  - Minor: String arguments with no constraint or example: description.
  - Minor: Says nothing about what it returns.
- `lob_us_zip_lookup`: 54 / 100
  - Major: Says nothing about when to use it, or when not to.
- `lob_create_address`: 59 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: company, address_city.
  - Minor: String arguments with no constraint or example: company, address_line1, address_line2, address_city, address_zip.
  - Minor: The description mentions none of its 3 or more arguments.
- `lob_create_letter`: 68 / 100
  - Minor: String arguments with no constraint or example: description.
  - Minor: Says nothing about what it returns.

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