Agent Protocols📅 2026-08-17• ⏱️ 1 min read• ✍️ SubmitLLMs Team
Why Every Website Needs an agent.json Specification
Explore the agent.json specification hosted at /.well-known/agent.json and how autonomous AI agents use it for machine-to-machine interaction.
The Evolution from Human Browsing to Agentic Web
Autonomous AI agents (such as AutoGPT, Claude Computer Use, and custom MCP clients) are increasingly navigating the web on behalf of humans to book appointments, compare prices, execute API actions, and integrate services.
While llms.txt provides textual context, the `agent.json` standard (hosted at /.well-known/agent.json) defines machine-actionable capabilities, authentication mechanisms, and API endpoints.
Anatomy of an agent.json File
A standard-compliant agent.json file contains:
•`name`: Name of the agent or service.
•`description`: Concise explanation of what tasks the service can perform.
•`version`: Protocol version (e.g.
1.0.0).•`capabilities`: Structured flags declaring search, execution, MCP, or tool endpoints.
•`endpoints`: Specific URLs for agent queries, OpenAPI specs, and MCP endpoints.
{
"name": "SubmitLLMs",
"description": "AI readiness validation and llms.txt directory service.",
"version": "1.0.0",
"capabilities": {
"search": true,
"validation": true,
"mcp": true
},
"endpoints": {
"directory": "https://submitllms.com/api/directory",
"scanner": "https://submitllms.com/api/tools/scanner",
"llmsTxt": "https://submitllms.com/llms.txt"
},
"contact": "support@submitllms.com"
}Generating Your agent.json in 30 Seconds
You can generate, validate, and preview your own /.well-known/agent.json file using the free SubmitLLMs agent.json Generator.
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