--- title: Compare USPS, UPS, FedEx, And DHL Shipping Rates With SMKlog description: SMKlog is a US parcel shipping calculator that compares live USPS, UPS, FedEx, and DHL Express rates and lets you buy the label online. It is run by... canonical: https://daily.dev/posts/compare-usps-ups-fedex-and-dhl-shipping-rates-with-smklog-dbndf0qyn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Compare USPS, UPS, FedEx, And DHL Shipping Rates With SMKlog | daily.dev og:description: SMKlog is a US parcel shipping calculator that compares live USPS, UPS, FedEx, and DHL Express rates and lets you buy the label online. It is run by... og:url: https://daily.dev/posts/compare-usps-ups-fedex-and-dhl-shipping-rates-with-smklog-dbndf0qyn og:image: https://api.daily.dev/og/posts/DBNDf0qYN.png og:image:alt: Compare USPS, UPS, FedEx, And DHL Shipping Rates With SMKlog og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Compare USPS, UPS, FedEx, And DHL Shipping Rates With SMKlog **[API Evangelist](https://daily.dev/sources/apievangelist)** · 3 min read · 0 upvotes · 0 comments ## Summary SMKlog is a US parcel shipping calculator that compares live USPS, UPS, FedEx, and DHL Express rates and lets you buy the label online. It is run by SMKLOG-2022 LLC in Berkeley Heights, New Jersey, and covers US origins shipping to the US, Canada, UK, Germany, or Australia. The pricing engine is also exposed as an API, with a `POST /quote` endpoint, a key-free Quote API, a remote MCP server with five tools, an agent card, Agent Skills, and an llms.txt file for AI assistants. Agents can price a shipment and prepare checkout, but a human must complete payment on smklog.com. SDKs exist for JavaScript, Python, and Go. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Is there an API that compares shipping rates across USPS, UPS, FedEx, and DHL at once? Yes, SMKlog provides a Quote API with a POST /quote endpoint that returns live rates from USPS, UPS, and FedEx for any US-origin parcel, plus DHL Express for international destinations covering Canada, the UK, Germany, and Australia. It requires no API key to try, and SDKs exist for JavaScript, Python, and Go. _Developers wiring shipping cost comparisons into checkout can track tools like this one via daily.dev._ ### Can an AI agent buy a shipping label automatically without human approval? No, not fully. SMKlog's MCP server and agent tools let an AI assistant price a shipment and prepare checkout, but the actual payment must always be completed by a human on smklog.com. The service exposes five MCP tools, an agent card for discovery, Agent Skills, and an llms.txt file for assistant guidance. _Anyone designing agent-to-checkout handoffs can follow how services like SMKlog draw that line on daily.dev._ ## Similar posts on daily.dev - [Shipping: The Shape Of The Answer](https://daily.dev/posts/shipping-the-shape-of-the-answer-orpbjm2rf) · API Evangelist · 0 upvotes · 0 comments - [Amazon opens up its global logistics network to all businesses](https://daily.dev/posts/amazon-opens-up-its-global-logistics-network-to-all-businesses-rwwemx3pw) · TechCrunch · 0 upvotes · 0 comments - [Market-driven shipping now available in feature preview](https://daily.dev/posts/market-driven-shipping-now-available-in-feature-preview-chvgmdtkq) · Shopify Developer changelog · 0 upvotes · 0 comments - [UPS is building a real-time digital twin of its entire logistics network, updated every 10 minutes](https://daily.dev/posts/ups-is-building-a-real-time-digital-twin-of-its-entire-logistics-network-updated-every-10-minutes-dwpcifife) · The Next Web · 0 upvotes · 0 comments --- Tags: [#mcp](https://daily.dev/tags/mcp), [#ecommerce](https://daily.dev/tags/ecommerce) [View this post on daily.dev](https://daily.dev/posts/compare-usps-ups-fedex-and-dhl-shipping-rates-with-smklog-dbndf0qyn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Compare USPS, UPS, FedEx, And DHL Shipping Rates With SMKlog","url":"https://daily.dev/posts/compare-usps-ups-fedex-and-dhl-shipping-rates-with-smklog-dbndf0qyn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/compare-usps-ups-fedex-and-dhl-shipping-rates-with-smklog-dbndf0qyn"},"datePublished":"2026-10-27T20:09:15.308Z","dateModified":"2026-10-27T20:33:40.930Z","description":"SMKlog is a US parcel shipping calculator that compares live USPS, UPS, FedEx, and DHL Express rates and lets you buy the label online. 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