dyolo-kya 2.0.0

Know Your Agent (KYA): cryptographic chain-of-custody for recursive AI delegation with provable scope narrowing, namespace isolation, and enterprise-grade storage health
Documentation 
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{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/dyologician/dyolo-kya/raw/main/wire/schema.json",
  "title": "dyolo-kya Wire Format",
  "description": "JSON Schema for dyolo-kya v2 wire types: SignedChain and VerifiedToken.",
  "version": "2.0.0",

  "$defs": {
    "Hex32": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$",
      "description": "Hex-encoded 32-byte value (64 lowercase hex characters)."
    },
    "Hex64": {
      "type": "string",
      "pattern": "^[0-9a-f]{128}$",
      "description": "Hex-encoded 64-byte value (128 lowercase hex characters — Ed25519 signature)."
    },
    "Hex16": {
      "type": "string",
      "pattern": "^[0-9a-f]{32}$",
      "description": "Hex-encoded 16-byte value (32 lowercase hex characters — nonce)."
    },

    "SubScopeProofNode": {
      "type": "object",
      "required": ["hash", "is_left"],
      "additionalProperties": false,
      "properties": {
        "hash":    { "$ref": "#/$defs/Hex32" },
        "is_left": { "type": "boolean" }
      }
    },

    "SubScopeProof": {
      "type": "object",
      "description": "Merkle inclusion proof demonstrating scope narrowing.",
      "required": ["subset_intents", "proofs"],
      "additionalProperties": false,
      "properties": {
        "subset_intents": {
          "type": "array",
          "items": { "$ref": "#/$defs/Hex32" },
          "description": "BLAKE3 hashes of the delegated intent subset."
        },
        "proofs": {
          "type": "array",
          "items": {
            "type": "array",
            "items": { "$ref": "#/$defs/SubScopeProofNode" }
          },
          "description": "One Merkle proof path per intent in subset_intents."
        }
      }
    },

    "CertExtensions": {
      "type": "object",
      "description": "Arbitrary key-value metadata committed into the cert signature.",
      "additionalProperties": true,
      "properties": {
        "dyolo.cost_center":  { "type": "string" },
        "dyolo.environment":  { "type": "string" },
        "dyolo.trace_id":     { "type": "string" },
        "dyolo.max_usd":      { "type": "string" }
      }
    },

    "DelegationCert": {
      "type": "object",
      "description": "A single cryptographically-signed delegation hop.",
      "required": [
        "version", "delegator_pk", "delegate_pk", "scope_root",
        "scope_proof", "nonce", "issued_at", "expiration_unix",
        "max_depth", "signature"
      ],
      "additionalProperties": false,
      "properties": {
        "version":         { "type": "integer", "const": 1 },
        "delegator_pk":    { "$ref": "#/$defs/Hex32" },
        "delegate_pk":     { "$ref": "#/$defs/Hex32" },
        "scope_root":      { "$ref": "#/$defs/Hex32" },
        "scope_proof":     { "$ref": "#/$defs/SubScopeProof" },
        "nonce":           { "$ref": "#/$defs/Hex16" },
        "issued_at":       { "type": "integer", "minimum": 0 },
        "expiration_unix": { "type": "integer", "minimum": 0 },
        "max_depth":       { "type": "integer", "minimum": 0, "maximum": 255 },
        "extensions":      { "$ref": "#/$defs/CertExtensions" },
        "signature":       { "$ref": "#/$defs/Hex64" }
      }
    },

    "SignedChain": {
      "type": "object",
      "description": "A portable, verifiable delegation chain from a human principal to an executing agent.",
      "required": ["version", "principal_pk", "principal_scope", "certs"],
      "additionalProperties": false,
      "properties": {
        "version":         { "type": "integer", "const": 1 },
        "principal_pk":    { "$ref": "#/$defs/Hex32" },
        "principal_scope": { "$ref": "#/$defs/Hex32" },
        "certs": {
          "type": "array",
          "items": { "$ref": "#/$defs/DelegationCert" },
          "minItems": 0
        }
      }
    },

    "VerificationReceipt": {
      "type": "object",
      "required": ["chain_depth", "verified_scope_root", "intent", "verified_at_unix", "chain_fingerprint"],
      "additionalProperties": false,
      "properties": {
        "chain_depth":         { "type": "integer", "minimum": 0 },
        "verified_scope_root": { "$ref": "#/$defs/Hex32" },
        "intent":              { "type": "string" },
        "verified_at_unix":    { "type": "integer", "minimum": 0 },
        "chain_fingerprint":   { "$ref": "#/$defs/Hex32" }
      }
    },

    "VerifiedToken": {
      "type": "object",
      "description": "Gateway-signed receipt verifiable without re-running the full chain.",
      "required": ["receipt", "mac"],
      "additionalProperties": false,
      "properties": {
        "receipt": { "$ref": "#/$defs/VerificationReceipt" },
        "mac":     { "$ref": "#/$defs/Hex32" }
      }
    }
  },

  "oneOf": [
    { "$ref": "#/$defs/SignedChain" },
    { "$ref": "#/$defs/VerifiedToken" }
  ]
}