Protocols & identity

Agent2Agent (A2A) is an open standard for communication and interoperability between independent AI agent systems: discovery, interaction and task management.

ACORD's insurance data standards, including P&C (XML, AL3) and Global Reinsurance & Large Commercial (XML, JSON), covering placing, policy, claims and settlement data.

ACORD Solutions Group's insurance data-exchange tools, ADEPT and ACORD Transcriber, with an announced MCP layer so AI agents can work with standardized insurance transactions.

A working draft, stewarded by Marrow, for how AI agents quote, compare and buy UK regulated insurance, with rules on consent, disclosures, data use and audit.

A2UI is an open protocol that lets AI agents send interface layouts as declarative JSON, which client apps render natively on web, mobile and desktop.

An open protocol for how an AI agent streams its actions and results into an application's user interface.

A proposed CEN Technical Report (guidance, not a standard) on exposing EN 18356-1 insurance data through MCP. Open for comment until 14 Nov 2026.

Cloudflare lets websites verify AI agents and bots by cryptographic signature (Web Bot Auth) and manage them as verified bots; pay per crawl is in closed beta.

The London market's standard data set from the London Market Group Data Council, now covering pre-bind through to claims. Its data elements sit within ACORD GRLC standards. A data standard, not a personal-agent protocol.

RFC 9110 (HTTP Semantics, IETF Internet Standard) defines the architecture, terminology and semantics shared by all HTTP versions.

An open protocol that lets software agents pay for APIs and services over HTTP, using the 402 'payment required' response.

Model Context Protocol: the standard way an AI agent connects to tools and data. Created by Anthropic (Nov 2024); donated to the Linux Foundation's Agentic AI Foundation on 9 Dec 2025.

An official MCP extension that lets tools return interactive interfaces, such as forms, charts and dashboards, shown inside the chat; supported by ChatGPT, Claude, Goose and VS Code.

OAuth 2.0 (RFC 6749) is an authorization framework; OpenID Connect adds an identity layer on top of it.

The OpenAPI Specification defines a standard, language-independent way to describe HTTP APIs for humans and machines.

Personal Agent Protocol: a draft (v0.1) for a customer's personal agent to identify itself to a business, get consent and open a session. Announced by Sierra and Meta on 6 Oct 2026 with six named partners; the 9 Oct draft lists seven initial partners and 35 design partners.

OpenID Foundation work, led by its AI Identity Management Community Group, on how AI agents prove identity and act for users, building on OpenID Connect and OAuth.