{
  "handle": "Actor",
  "mechanism": "A primitive entity capable of executing an {{act}}. Unlike an agent (which possesses intent and reasoning), an Actor is a pure execution container defined by its {{identity}}, {{nature}}, and capability set. It serves as the foundational subject for permissions and logging.",
  "gloss": "A capability-bearing entity",
  "_meta": {
    "ring": 0,
    "tier": 0,
    "supersedes": [
      "sema:Actor#mh:SHA-256:69261bc3b260a9235b8d5fbef8b0c53c9773e60ed6d4df04babfffffd2897a89",
      "sema:Actor#mh:SHA-256:1ecd855bdf9fc33f99840af8b53729d917355fb151d36ff21947885fac5c5907"
    ],
    "path": [
      "Infrastructure",
      "Primitives"
    ]
  },
  "data_schema": {
    "type": "object",
    "required": [
      "identity",
      "nature",
      "capabilities"
    ],
    "properties": {
      "public_key": {
        "type": "string",
        "description": "Key material, where the Actor has any. Absent for physical actuators and other non-cryptographic executors."
      },
      "role": {
        "type": "string",
        "description": "Current active role/persona"
      },
      "status": {
        "type": "string",
        "enum": [
          "Idle",
          "Busy",
          "Offline",
          "Error"
        ],
        "description": "Availability state"
      },
      "capabilities": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "description": "List of supported tool/protocol hashes"
      },
      "endpoint": {
        "type": "string",
        "description": "Communication address"
      },
      "identity": {
        "type": "string",
        "description": "The {{identity}} this Actor executes under."
      },
      "nature": {
        "type": "string",
        "description": "What kind of thing it is — process, service, device, person in a pure-execution role."
      }
    }
  },
  "sema_ref": "Actor#86fc",
  "sema_id": "sema:Actor#mh:SHA-256:86fc0930b97ffb4fe85d4820af8e17a43166b745d181895f576edf39edde6aa8",
  "sema_stub": "86fc",
  "invariants": [
    "Executes without intent: an Actor performs an {{act}} it is asked to perform and does not originate one.",
    "Capability-bounded: an {{act}} outside the declared capability set is refused, not attempted."
  ],
  "dependencies": {
    "composes_with": {
      "act": "sema:Act#mh:SHA-256:2dfedd75a396f2639ce949b9f5270766350b9c7404d404c11c57140fcf030455"
    },
    "references": {
      "identity": "sema:Identity#mh:SHA-256:b24a57fdd59ebf2ef019be30af8fa10fc127f61d346a74ab0b49f729b4e32093",
      "nature": "sema:Nature#mh:SHA-256:9ac1fd9a3449747d2f605067023df9e13d7a60c15e556d376272266f95cfaf37"
    }
  },
  "sema_layer": "Infrastructure",
  "sema_category": "Primitives",
  "used_by": {
    "references": {
      "Agent": "sema:Agent#mh:SHA-256:e127459069739fffc96a71d54ef6e8c97ca53471d5349c16aa72a092a33756cd",
      "ConfusedDeputy": "sema:ConfusedDeputy#mh:SHA-256:119aeab272e329eef56459a0d0fa7bcf46aab9b07dab2b3cf947034a63a5116f",
      "OathBind": "sema:OathBind#mh:SHA-256:a573c2d71a61bdce661f5df9bcc53f862866d98448682d87f69a687e1a496f5d",
      "StateLock": "sema:StateLock#mh:SHA-256:c9c2809bdf97bb6ac17a8ffe428d4aa9a28294b99d64cc8a336a239d26a8afb8"
    },
    "accepts": {
      "Mutex": "sema:Mutex#mh:SHA-256:b031c2dc75f23526ac765e042cd1ff77f66f0a7a23d57e480b30da0a8343e18e"
    }
  }
}