{
  "handle": "TieredAccess",
  "mechanism": "Central 'massive' agents (high authority) create a gravity well. The cost to interact with an agent increases the closer you get to the center. This naturally filters low-value queries to the periphery and reserves core attention for high-value interactions. Utilizes {{bearer_token}}.",
  "gloss": "Cost-distance indexing",
  "failure_modes": [
    "Metric Divergence: Agents disagree on distance calculation, causing payment rejection.",
    "Center becomes economically inaccessible to low-resource agents."
  ],
  "invariants": [
    "Cost Monotonicity: Cost(Distance D-1) > Cost(Distance D) - closer to center means higher cost",
    "Metric Definition: Distance must be computed via agreed metric (hops, latency, trust score)"
  ],
  "preconditions": [
    "{{agent}} has valid {{identity}}"
  ],
  "postconditions": [
    "Access log updated"
  ],
  "parameters": [
    {
      "name": "cost_function",
      "type": "Enum",
      "range": "{Linear, Exponential, Step}",
      "description": "How cost scales with proximity"
    },
    {
      "name": "distance_metric",
      "type": "Enum",
      "range": "{Hops, Latency, TrustScore}",
      "description": "How to measure distance"
    }
  ],
  "_meta": {
    "tier": 1,
    "ring": 0,
    "supersedes": [
      "sema:TieredAccess#mh:SHA-256:2a28f25bd2e1e991a4c9250d85a478f2b16bf57a9191dbb61c944a29b14559ff",
      "sema:TieredAccess#mh:SHA-256:f3f651c9ef144f5a78f1ba4539ff8af7d1b70c625ef9cc119cf31e8f7e5340dd",
      "sema:TieredAccess#mh:SHA-256:805cff9b1016fb2e59af973679a456842d0d764359ffa1c0bc708e7633218334",
      "sema:TieredAccess#mh:SHA-256:c826df24049123ff8ab6e64130fd19b23bc56afb1efd386abe61eb28ba094606"
    ],
    "path": [
      "Society",
      "Protocols"
    ]
  },
  "sema_id": "sema:TieredAccess#mh:SHA-256:48871e4baf0a2f4a54892bf6c25765ca648696f391f569b02afaefb8b4af9a5b",
  "sema_ref": "TieredAccess#4887",
  "sema_stub": "4887",
  "dependencies": {
    "composes_with": {
      "bearer_token": "sema:BearerToken#mh:SHA-256:190a706b87eb5e59dea9d23a06f8f13f45081dec847572be38dfb398cf201112"
    },
    "references": {
      "agent": "sema:Agent#mh:SHA-256:e127459069739fffc96a71d54ef6e8c97ca53471d5349c16aa72a092a33756cd",
      "identity": "sema:Identity#mh:SHA-256:b24a57fdd59ebf2ef019be30af8fa10fc127f61d346a74ab0b49f729b4e32093"
    }
  },
  "sema_layer": "Society",
  "sema_category": "Protocols",
  "used_by": {
    "references": {
      "PermissionEscalate": "sema:PermissionEscalate#mh:SHA-256:b2392a102ae384a41f9cd0a4e5ed173860457fb7bb6f336e74d108b904b10036"
    }
  }
}