𝗧𝗵𝗲 𝗦𝘂𝗯𝘀𝘁𝗿𝗮𝘁𝗲 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻: 𝗔𝗚𝗧𝗣 𝗮𝗻𝗱 𝗔𝗥𝗗
Google, Microsoft, and Hugging Face recently released the Agentic Resource Discovery (ARD) specification.
The design is excellent. It uses a federated approach to help different organizations find AI agents. This is a major step forward for the industry.
However, ARD has a hidden challenge. It operates above the transport layer. This means it relies on HTTP to move data.
The problem with HTTP for agents:
- HTTP was built for human web traffic.
- Agent security relies on application-layer conventions.
- These conventions are easy for attackers to bypass or forge.
- Current vulnerabilities show that HTTP lacks the structural properties agents need.
This brings us to the substrate question. Should agent traffic continue to use HTTP, or do we need a new foundation?
The Agent Transfer Protocol (AGTP) is the answer.
AGTP is a dedicated transport for agent traffic. It does not rely on HTTP headers for identity. Instead, it carries identity and authority as facts on the wire.
How ARD and AGTP work together:
- ARD handles discovery. It tells you where capabilities live and if they are trustworthy.
- AGTP handles the connection. It carries the actual data and identity.
In an AGTP-native world, an agent finds a capability via ARD. Then, it connects using the AGTP substrate. This ensures that identity, owner ID, and authority scope are built into every request.
The industry has solved discovery. Now, we must solve transport.
ARD provides the map. AGTP provides the road.
Optional learning community: https://t.me/GyaanSetuAi