ARHG — Agent-Readable Hyperlink Graph

01 · Apibrėžimas

ARHG is a discovery-and-visibility semantics layer that sits beneath this site's other protocols. Sitemap answers "what URLs exist"; robots.txt answers "what may a crawler fetch"; ARHG answers "what is this resource, how does it relate to others, and where am I allowed to go next." It models a site (or a group of sites) as a typed, permissioned graph G=(V,E,M,P), and renders a separate filtered subgraph G_a = G[V_a] per role, so a public crawler, an authenticated agent, and an admin do not see the same map. Its core axiom is that knowing a URL never implies authorization -- KnowURL(a,v) does not imply Access(a,v) -- so enforcement must happen server-side, never by simply omitting a link from a page a human would see anyway. ARHG deliberately does not decide what an agent may do with a resource once found: content-use questions stay with AICR/AILP, and action/authority questions stay with AARS/AADP. It answers the question upstream of both -- can this even be found, by whom, and what does it lead to.

02 · Paskirtis

• Replace URL-guessing and menu-parsing with an explicit, typed graph a machine can walk.
• Separate discovery from authorization: a node's presence in a public listing never by itself grants read, write, or execute access to it.
• Give every node and edge a stable identity independent of its URL, plus a declared visibility tier.
• Provide the discovery layer AICR/AILP's content rights and AARS/AADP's action rights both sit on top of, but neither one defines.

03 · Taikymo sritis

04 · Mašininiu būdu nuskaitomas pavyzdys

This site's own graph — /links/index.json

{
  "arhg_version": "0.1",
  "site": {
    "id": "agiright",
    "title": "AGIRight.org",
    "canonical_url": "https://agiright.org",
    "version": "v0.12.1"
  },
  "role": "public",
  "nodes": [
    {
      "id": "section.protocols",
      "type": "section",
      "title": "Protocols",
      "canonical_url": "https://agiright.org/protocols",
      "visibility": "public",
      "discoverable": true,
      "allowed_roles": ["public", "crawler", "agent", "editor", "admin", "owner"]
    },
    {
      "id": "protocol.arhg",
      "type": "protocol",
      "title": "ARHG -- Agent-Readable Hyperlink Graph",
      "canonical_url": "https://agiright.org/protocols/arhg",
      "visibility": "public",
      "discoverable": true,
      "allowed_roles": ["public", "crawler", "agent", "editor", "admin", "owner"]
    }
  ],
  "edges": [
    { "from": "section.protocols", "to": "protocol.arhg", "relation": "child", "visibility": "public", "traversable": true }
  ]
}

05 · Apribojimai

• ARHG describes discovery and visibility semantics; it does not itself decide whether a discovered resource may be read, learned from, or acted on -- see AICR/AILP and AARS/AADP for those questions.
• It is an open research draft, not an adopted standard; this site does not claim any crawler or agent framework currently reads /.well-known/agent-map.
• This site currently has no preview/internal/private content, so its own live graph only exercises the public tier -- the graded-visibility machinery is implemented and enforced in code, but not yet proven against real non-public data.
• Adapted from a larger source specification (Neo.K/EveMissLab, 2026-09-22) whose reference implementation also bundles an economic/settlement/federation extension for agent-to-agent payment and cross-site contract clearing -- AGIRight has not adopted that layer; see reference/arhg-source/README.md in this site's own repository.