AI Agent
Enter a supported agent domain, URL or public endpoint to inspect available public agent metadata.
AI Agent Lookup
Look up publicly available identity and technical information about AI agents and MCP Servers.
Enter an agent URL, domain, public endpoint or MCP Server to inspect available Agent Card, provider, protocol, capability and registry information.
Alterlayer reads supported publicly available metadata. It does not create or replace agent or MCP registries.
What is AI Agent Lookup?
AI Agent Lookup provides a simple way to inspect publicly available identity and technical metadata about AI agents and related MCP Servers.
AI agents can publish structured information through protocols such as Agent2Agent (A2A). An A2A Agent Card can describe an agent's name, provider, skills, capabilities, public endpoint and supported interfaces.
MCP Servers are different from AI agents. The Model Context Protocol (MCP) enables AI applications and agents to connect with tools and resources. Alterlayer can inspect supported public MCP Registry information while keeping MCP Servers clearly distinguished from AI agents.
Alterlayer brings supported public metadata into one normalized, human-readable view while preserving its source and provenance.
What can you look up?
AI Agent Lookup currently supports public A2A Agent Card discovery and Official MCP Registry information. The available result depends on what the agent, provider or registry publishes publicly.
A2A Agent Card
Inspect available Agent Card information including identity, provider, skills, capabilities, protocol interfaces and discovery provenance.
MCP Server
Search supported Official MCP Registry information including server identity, version, publisher namespace, repository, packages and remote interfaces when available.
What is an A2A Agent Card?
An A2A Agent Card is machine-readable metadata published by an AI agent to describe information that can be used for discovery and interoperability. Depending on what the publisher declares, an Agent Card may include the agent's identity, description, provider, skills, capabilities, endpoint and supported protocol interfaces.
AI Agent Lookup retrieves supported publicly accessible Agent Card information and presents it in a normalized view. Declared information remains attributed to its source and is not independently verified by Alterlayer.
What is an MCP Server?
An MCP Server exposes tools, resources or other capabilities that AI applications and agents can use through the Model Context Protocol. An MCP Server is not automatically an AI agent.
AI Agent Lookup can search supported information from the Official MCP Registry and present available server identity, version, publisher namespace, repository, package and remote interface information in the same readable environment used for agent lookup.
A2A and MCP address different but complementary parts of agentic systems: A2A supports interaction between agents, while MCP helps AI applications and agents connect to tools and resources.
Is AI Agent Lookup an AI Agent WHOIS?
AI Agent Lookup can serve a similar discovery purpose to a WHOIS-style lookup by helping users inspect available public information about an AI agent or MCP Server. However, there is currently no single universal WHOIS system for AI agents, and Alterlayer does not operate an authoritative agent registry.
Instead, Alterlayer reads supported public metadata from external protocols and registries and presents that information in a normalized view with its provenance visible.
The underlying source remains authoritative for the metadata it publishes. Alterlayer does not create ownership rights, register agent names or replace the original registry or protocol.
How AI Agent Lookup works
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1.Enter a public identifier
Enter an agent domain, URL, public endpoint or supported MCP Server name.
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2.Check supported public sources
Alterlayer checks the applicable supported public discovery source without creating a permanent agent record.
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3.Normalize available metadata
Available technical metadata is organized into a consistent human-readable presentation.
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4.Preserve provenance
The result identifies where information came from and distinguishes declared information from information discovered during the lookup.
What AI Agent Lookup does not do
AI Agent Lookup is a public metadata discovery utility. It does not independently verify an agent's identity, ownership, security, regulatory status or trustworthiness.
- It does not create an Alterlayer agent registry.
- It does not certify or approve AI agents or MCP Servers.
- It does not establish legal ownership of an agent.
- It does not execute agent capabilities or MCP tools.
- It does not create permanent public profiles from individual searches.
- It does not store a new public registry record simply because a lookup was performed.
Where does the information come from?
AI Agent Lookup currently uses supported public discovery sources. For AI agents, this includes publicly accessible A2A Agent Cards. For MCP Servers, this includes supported metadata from the Official MCP Registry.
Availability varies by publisher. An unsuccessful lookup does not establish that an agent or MCP Server does not exist; its information may not be publicly available through a currently supported source.
FAQ
What is AI Agent Lookup?
AI Agent Lookup is a free public utility for inspecting supported publicly available metadata about AI agents and MCP Servers in a normalized, human-readable view.
What is an AI Agent WHOIS lookup?
AI Agent WHOIS is an emerging way of describing the idea of looking up public identity and technical information about an AI agent. There is currently no single universal WHOIS authority for AI agents. Alterlayer reads supported external public metadata rather than operating an authoritative agent registry.
What is an A2A Agent Card?
An A2A Agent Card is machine-readable metadata that can describe an AI agent's identity, provider, skills, capabilities, endpoint and supported interfaces. The exact information available depends on what the publisher declares.
Can I look up an MCP Server?
Yes. AI Agent Lookup supports searches against supported Official MCP Registry information and can display available MCP Server identity, version, publisher namespace, repository, package and remote interface information.
Is an MCP Server an AI agent?
Not necessarily. MCP Servers expose tools, resources or capabilities for AI applications and agents. A2A and MCP address different but complementary interoperability needs.
Does Alterlayer verify the information?
No. Alterlayer normalizes supported publicly available metadata and preserves its provenance. Declared information has not been independently verified by Alterlayer unless a future service explicitly states otherwise.
Does a lookup create a public Agent Profile?
No. Performing a lookup does not create a permanent public Agent Profile, registry entry or indexable result URL.