bots.st/postalref
postalref
USPS code and barcode lookups
3354 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 8
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://postalref.com/mcp
What it can do
| Tool | What it says it does |
|---|---|
decode | Read a package barcode or tracking number (IMpb): its layout, each field's digits and meaning, whether the check digit holds, and the service type code's row in the USPS list, each with the passage that says so. A field's `meaning` is postalref's words: quote a cite's `lit`, USPS's, with its… |
define | What USPS means by a name or abbreviation: each registry entry it names, in the order search ranks them, with its kind and tier, the USPS words that define it and the page they're on, its other names, postalref's own explanation where it has one, and postalref's page about it. An entry USPS ended… |
diff | What changed in a code table or document between two editions: each code added, removed or changed and each changed section, rated editorial, additive or breaking, with who rated it. |
lookup | Look up a USPS code: its row as USPS prints it in the newest edition that lists it, the codes its cells name, the editions that list it and its history, each row with its passage id. A code is found without the marks USPS prints around it and in a row USPS prints for several codes: 750 finds *750… |
read_source | Read any document postalref holds page by page, as extracted, to quote it: a quote cites the revision's sha256, the PDF page and the words exactly. A text without pages, a web page or a product page, reads in parts, and a quote from one cites no page. Quote whole sentences, word for word, from a… |
search | Search the codes, terms, banner texts, specs and documents postalref models, by one index: names and codes whose key is the query's first, then those that start with it, then those with words that start with its words, then codes whose row has its words. A term hit carries its kind (mail-class… |
search_documents | Search every document on PostalPro by title and file name, with its page and newest file, and the product pages and downloads postalref holds by title. Each one postalref holds the text of carries the id read_source reads it by. A title says only that USPS publishes a document: read_source the… |
search_text | Search the text of every document postalref holds for the pages that say the words, best first: those that say them as a phrase, then by how much of the page they are and how many of them it says side by side or close together, a table of contents last, and at most three pages a document. A page… |
In its maker's words
USPS package barcodes, service type codes and mailing terms, each cited to its USPS source.
- Website
- postalref.com
- Publisher
- postalref.com
- Listed from
- the official MCP Registry as
com.postalref/postalref - Version
- 0.2.0, updated 1 Nov 2026
- Kinds of work
- Search and research, Law, tax and government, Domains and websites
The domain it lives on
- postalref.com
- registered 31 Oct 2026 (1 months ago), at Cloudflare, Inc.
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 3354 ms | |
| Answered | 3509 ms | |
| Answered | 2535 ms |
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