{
  "lexicon": 1,
  "id": "org.latha.strata.defs",
  "description": "Shared type definitions for the org.latha.strata namespace — a three-layer memory architecture (Vault, Carry, MemFS).",
  "defs": {
    "claimRef": {
      "type": "object",
      "description": "Reference to a claim stored in a Strata layer, with its location and identifier.",
      "required": ["uri"],
      "properties": {
        "uri": {
          "type": "string",
          "format": "at-uri",
          "description": "AT-URI of the referenced claim record."
        },
        "layer": {
          "type": "string",
          "knownValues": [
            "org.latha.strata.defs#vault",
            "org.latha.strata.defs#carry",
            "org.latha.strata.defs#memfs"
          ],
          "description": "Which Strata layer holds the canonical copy."
        }
      }
    },
    "sourceRef": {
      "type": "object",
      "description": "Provenance of a claim — where it came from and how it was produced.",
      "required": ["method"],
      "properties": {
        "method": {
          "type": "string",
          "knownValues": [
            "org.latha.strata.defs#web-search",
            "org.latha.strata.defs#human-input",
            "org.latha.strata.defs#inference",
            "org.latha.strata.defs#carry-lookup"
          ],
          "description": "How the claim was produced."
        },
        "url": {
          "type": "string",
          "format": "uri",
          "description": "Source URL if the claim came from the web."
        },
        "agentDid": {
          "type": "string",
          "format": "did",
          "description": "DID of the agent that produced the claim."
        }
      }
    },
    "vault": {
      "type": "token",
      "description": "Strata layer: the surface — Obsidian vault, prose, human-readable notes."
    },
    "carry": {
      "type": "token",
      "description": "Strata layer: the mid — structured claims, shared across agents, CRDT-backed."
    },
    "memfs": {
      "type": "token",
      "description": "Strata layer: the deep — private agent state, system prompt, git-backed."
    },
    "high": {
      "type": "token",
      "description": "Confidence level: high — well-established, from trusted source or direct observation."
    },
    "medium": {
      "type": "token",
      "description": "Confidence level: medium — plausible, from reasonable source or inference."
    },
    "low": {
      "type": "token",
      "description": "Confidence level: low — uncertain, speculative, or from unverified source."
    },
    "person": {
      "type": "token",
      "description": "Entity type: a person."
    },
    "org": {
      "type": "token",
      "description": "Entity type: an organization."
    },
    "concept": {
      "type": "token",
      "description": "Entity type: an abstract concept, idea, or topic."
    },
    "tool": {
      "type": "token",
      "description": "Entity type: a software tool, service, or platform."
    },
    "web-search": {
      "type": "token",
      "description": "Claim method: produced via web search."
    },
    "human-input": {
      "type": "token",
      "description": "Claim method: directly provided by a human."
    },
    "inference": {
      "type": "token",
      "description": "Claim method: inferred by an agent from other evidence."
    },
    "carry-lookup": {
      "type": "token",
      "description": "Claim method: looked up from existing carry data."
    }
  }
}