Lob MCP by usefulapi

Tools are split cleanly by resource and action (address, letter, postcard, check, template), so there is very little chance of misselection. The only mild overlap is among the three address helpers — lob_verify_us_address, lob_us_autocomplete, and lob_us_zip_lookup — which all touch US address data but have distinguishable purposes.

Nearly all tools use a predictable lob_verb_noun pattern (lob_create_letter, lob_get_postcard, lob_list_addresses, lob_cancel_postcard), with a consistent lob_ prefix. Two tools (lob_us_autocomplete, lob_us_zip_lookup) drop the verb in favor of a noun-style name, a minor deviation.

18 tools is slightly above the comfortable range but each resource (address, letter, postcard, check, self-mailer, template) justifies its own list/get variants. Nothing looks redundant or padded, though cancel/verify asymmetry adds a bit of bulk without full coverage.

The surface is uneven: postcards get create/get/list/cancel, but letters have no cancel tool despite the description noting cancelability, and checks, self-mailers, and templates are read-only (no create_check, no get_self_mailer, no template CRUD). Core send+track workflows are covered, but there are notable lifecycle gaps.