The HTTP User-Agent request header is a characteristic string that lets servers and network peers identify the application, operating system, vendor, and/or version of the requesting user agent.
Document: requestStorageAccess() method - Web APIs | MDN
The requestStorageAccess() method of the Document interface allows content loaded in a third-party context (i.e., embedded in an <iframe>) to request access to third-party cookies and unpartitioned state. This is relevant to user agents that, by default, block access to third-party, unpartitioned cookies to improve privacy (e.g., to prevent tracking), and is part of the Storage Access API.
HTTP Semantics
The Hypertext Transfer Protocol (HTTP) is a stateless application-level protocol for distributed, collaborative, hypertext information systems. This document describes the overall architecture of HTTP, establishes common terminology, and defines aspects of the protocol that are shared by all versions. In this definition are core protocol elements, extensibility mechanisms, and the "http" and "https" Uniform Resource Identifier (URI) schemes. This document updates RFC 3864 and obsoletes RFCs 2818, 7231, 7232, 7233, 7235, 7538, 7615, 7694, and portions of 7230.
Introduction - Agent Client Protocol
Get started with the Agent Client Protocol.
HTTP: The Protocol Every Web Developer Must Know—Part 1
Learning the fundamentals of the World Wide Web is crucial, especially if you are planning to build web apps. And HTTP is at the heart of any web application you could build. HTTP stands for...
Web Components - Web APIs | MDN
Web Components is a suite of different technologies allowing you to create reusable custom elements — with their functionality encapsulated away from the rest of your code — and utilize them in your web apps.
Cap'n Web: A new RPC system for browsers and web servers
Cap'n Web is a new open source, JavaScript-native RPC protocol for use in browsers and web servers. It provides the expressive power of Cap'n Proto, but with no schemas and no boilerplate.
Group Note Draft: Web User Agents
Web user agents include both web browsers and other intermediaries between end-users and the web.
Some Secret Management Belongs in Your HTTP Proxy - exe.dev blog
do third-party integrations via HTTP header management
httpie/cli
🥧 HTTPie CLI — modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.
Agentic Browser Security: Indirect Prompt Injection in Perplexity Comet | Brave
The attack we developed shows that traditional Web security assumptions don't hold for agentic AI, and that we need new security and privacy architectures for agentic browsing.
This documents the regular HTTP API served by the radio backend. It excludes the
Pluralistic: Google’s new remote attestation scheme is every bit as terrible as its old remote attestation scheme (12 Jun 2026) – Pluralistic: Daily links from Cory Doctorow
Long before "agentic AI," we had the idea that software would act as your agent on the internet. That's why the old-fashioned technical term for a browser is a "user agent." Your browser acts on your behalf to retrieve information and then show it to you, in the format you choose. It's your agent:
Generic Event Delivery Using HTTP Push
This document describes a simple protocol for the delivery of real- time events to user agents. This scheme uses HTTP/2 server push.
MDN MCP server
The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.
