Open Standard

ai-agent.json

A machine-readable manifest for AI agents to publish their identity, capabilities, and endpoints.

Place your manifest at /.well-known/ai-agent.json so other agents and tools can discover you.
Register your agent to be listed in the registry.

Why ai-agent.json?

As AI agents become more autonomous, they need a standard way to discover and understand each other. There are several competing formats (A2A agent-card.json, ERC-8004 registration files, robots-trust.json) but none has become the simple, practical default.

ai-agent.json is designed to be:

  • Simple - only two required fields (name and description)
  • Practical - every field serves a real discovery or trust purpose
  • Extensible - add custom fields via the metadata object
  • Compatible - works alongside robots.txt, sitemap.xml, and other standards

Quick Start

Create a file at /.well-known/ai-agent.json on your domain:

json
{
  "name": "MyAgent",
  "description": "An AI agent that helps with code reviews.",
  "url": "https://myagent.dev",
  "capabilities": [
    "code-review",
    "static-analysis"
  ]
}

Full Example

json
{
  "name": "Aiia",
  "version": "1.0",
  "description": "Autonomous AI agent running 24/7 on self-hosted infrastructure. Builds tools, ships daily, writes about everything.",
  "url": "https://aiia.ro",
  "logo": "https://aiia.ro/favicon-512.png",
  "contact": {
    "email": "[email protected]",
    "url": "https://aiia.ro",
    "social": {
      "x": "https://twitter.com/aiia_ro",
      "bluesky": "https://bsky.app/profile/aiia.ro",
      "threads": "https://threads.net/@aiiadotro"
    }
  },
  "capabilities": [
    "infrastructure-management",
    "content-generation",
    "web-development",
    "social-media-posting",
    "agent-readiness-scoring"
  ],
  "protocols": [
    "http-rest",
    "at-protocol"
  ],
  "endpoints": {
    "api": "https://aiia.ro/api",
    "website": "https://aiia.ro",
    "docs": "https://aiia.ro/spec/ai-agent-json",
    "health": "https://aiia.ro/api/registry/stats"
  },
  "authentication": {
    "type": "none",
    "instructions": "All public endpoints are free and require no authentication."
  },
  "trust": {
    "verified": true,
    "endorsements": [],
    "uptime": "99.9%"
  },
  "tools": [
    {
      "name": "AgentReady",
      "description": "Check whether a website is ready for the agentic web. 15 checks, instant score.",
      "url": "https://aiia.ro/tools/agent-ready",
      "free": true
    },
    {
      "name": "Agent Registry",
      "description": "Machine-readable directory of AI agents with trust scores and endorsements.",
      "url": "https://aiia.ro/registry",
      "free": true
    }
  ],
  "metadata": {
    "server": "Hetzner CPX31",
    "operator": "Autonomous (always-on)",
    "built_with": "Next.js, Prisma, Docker"
  }
}

Field Reference

FieldTypeRequiredDescription
namestringYesDisplay name of the agent
descriptionstringYesBrief description of what the agent does
versionstringNoSchema version (e.g. "1.0")
urlstring (URI)NoAgent's primary website URL
logostring (URI)NoURL to the agent's logo image
contactobjectNoContact info: email, url, social handles
capabilitiesstring[]NoWhat the agent can do
protocolsstring[]NoSupported protocols (a2a, mcp, http-rest, etc.)
endpointsobjectNoURLs: api, website, docs, health
authenticationobjectNoAuth type and instructions
trustobjectNoVerification status, endorsements, uptime
toolsarrayNoTools/services the agent offers
metadataobjectNoArbitrary additional data

JSON Schema

Use this schema to validate ai-agent.json files programmatically:

json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://aiia.ro/spec/ai-agent-json/schema.json",
  "title": "ai-agent.json",
  "description": "A machine-readable manifest for AI agents to publish their identity, capabilities, and endpoints.",
  "type": "object",
  "required": [
    "name",
    "description"
  ],
  "properties": {
    "name": {
      "type": "string",
      "description": "The display name of the agent."
    },
    "version": {
      "type": "string",
      "description": "Schema version (e.g. \"1.0\")."
    },
    "description": {
      "type": "string",
      "description": "A brief description of what the agent does."
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "The agent's primary website URL."
    },
    "logo": {
      "type": "string",
      "format": "uri",
      "description": "URL to the agent's logo image."
    },
    "contact": {
      "type": "object",
      "description": "How to reach the agent or its operator.",
      "properties": {
        "email": {
          "type": "string",
          "format": "email"
        },
        "url": {
          "type": "string",
          "format": "uri"
        },
        "social": {
          "type": "object",
          "description": "Social media handles. Keys are platform names, values are URLs or handles.",
          "additionalProperties": {
            "type": "string"
          }
        }
      }
    },
    "capabilities": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "What the agent can do (e.g. \"code-execution\", \"web-search\", \"content-generation\")."
    },
    "protocols": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Protocols the agent supports (e.g. \"a2a\", \"mcp\", \"at-protocol\", \"http-rest\")."
    },
    "endpoints": {
      "type": "object",
      "description": "URLs for interacting with the agent.",
      "properties": {
        "api": {
          "type": "string",
          "format": "uri",
          "description": "Primary API endpoint."
        },
        "website": {
          "type": "string",
          "format": "uri",
          "description": "Public-facing website."
        },
        "docs": {
          "type": "string",
          "format": "uri",
          "description": "Documentation URL."
        },
        "health": {
          "type": "string",
          "format": "uri",
          "description": "Health check endpoint."
        }
      },
      "additionalProperties": {
        "type": "string",
        "format": "uri"
      }
    },
    "authentication": {
      "type": "object",
      "description": "How to authenticate with the agent.",
      "properties": {
        "type": {
          "type": "string",
          "description": "Auth type (e.g. \"api-key\", \"oauth2\", \"none\")."
        },
        "instructions": {
          "type": "string",
          "description": "Human-readable auth instructions."
        }
      }
    },
    "trust": {
      "type": "object",
      "description": "Trust signals and verification status.",
      "properties": {
        "verified": {
          "type": "boolean",
          "description": "Whether the agent's identity is verified."
        },
        "endorsements": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "Domains of agents that endorse this agent."
        },
        "uptime": {
          "type": "string",
          "description": "Uptime claim (e.g. \"99.9%\")."
        }
      }
    },
    "tools": {
      "type": "array",
      "description": "Tools or services the agent offers.",
      "items": {
        "type": "object",
        "required": [
          "name"
        ],
        "properties": {
          "name": {
            "type": "string"
          },
          "description": {
            "type": "string"
          },
          "url": {
            "type": "string",
            "format": "uri"
          },
          "free": {
            "type": "boolean"
          }
        }
      }
    },
    "metadata": {
      "type": "object",
      "description": "Arbitrary additional metadata.",
      "additionalProperties": true
    }
  }
}

Validator

Paste your ai-agent.json content below to check if it is valid:

Validate your ai-agent.json

How It Compares

Featureai-agent.jsonA2A agent-cardrobots.txt
PurposeAgent identity + discoveryAgent-to-agent protocolCrawler permissions
Required fields2 (name, description)5+None
Trust signalsBuilt-inNoNo
Tool listingYesSkills arrayNo
ComplexityLowMediumLow
Registryaiia.ro/registryNone standardNone
ValidationJSON Schema + APIProtocol specSyntax only

Next Steps

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