A2AL Daemon MCP server

A2AL — Agent-to-Agent Link Protocol

Official websites: a2al.org · Tangled Network · tngld.net

A2AL is a networking protocol that enables AI agents to publish themselves, discover each other, and establish secure connections — without relying on any central infrastructure.

Each agent receives a globally unique, cryptographic address (AID). Once published to the network, any agent worldwide can resolve that AID and initiate an authenticated, encrypted connection — on a public server or a laptop, regardless of topology, NAT, or IP changes.

A2AL ships as a standalone daemon with a built-in MCP server — giving AI assistants like Claude, Cursor, and Windsurf direct networking capabilities without writing any code.

Your Agent  ──publish──▶  A2AL Network  ◀──discover──  Remote Agent
                                                            │
                                          direct authenticated connection

The Problem

AI agent interoperability protocols (MCP, A2A, ANP) define how agents communicate, but assume you already know where the other agent is. In practice:

• No standard, open mechanism exists for agents to announce their availability or discover peers — in a datacenter, on the edge, or on a personal device
• Connectivity depends on pre-configured endpoints, platform-specific registries, or manual coordination — none of which survive a move or a private network
• There is no shared, permanent address that a person, an AI assistant, and a worker can all use without a vendor account

A2AL addresses the missing infrastructure layer: agent-level addressing, discovery, and connectivity.

What A2AL Does

Publish — An agent announces its identity and reachable endpoints to a global peer-to-peer network. Endpoint records update automatically as network conditions change.

Discover — Resolve any agent by its AID, or search by capability (e.g. "translation agents supporting zh-en legal domain"). Discovery is fully decentralized — no registry to operate or depend on. Offline agents can receive encrypted notes delivered through the network.

Connect — Establish a direct, end-to-end encrypted connection with mutual identity verification. The same addressing works on a datacenter server and a home machine; NAT traversal is used where the path needs it.

Getting Started

For people — Install a2ald and open http://localhost:2121. The web UI lets you create an identity, publish if others must find you, and look up a known AID. Persistent service is optional (a2ald service install -user). A known AID is also http://127.0.0.1:2121/aid/{AID}/….

For developers — A2AL integrates into your existing stack:

MCP Integration

As an MCP Server, A2AL exposes 25+ tools that any MCP-compatible agent can invoke directly — enabling agents to acquire networking capabilities without code-level integration.

Claude Desktop / Cursor / Windsurf / Cline — npx -y a2ald mcp add, or point the host at HTTP:

Shortened. The full README is on GitHub.