{
  "schema_version": "satgate.evidence_pack.v1",
  "evidence_pack_type": "mcp_gateway_governance",
  "evidence_pack_id": "ep_mcp_gateway_demo_001",
  "generated_at": "2026-05-10T00:00:00Z",
  "tenant_id": "ten_example",
  "policy": {
    "policy_id": "pol_mcp_spend_caps_v1",
    "policy_version": 1,
    "policy_digest": "sha256:demo-policy-digest"
  },
  "authority_chain": {
    "principal_id": "user_platform_admin",
    "agent_id": "agent_hermes_research",
    "mcp_client_id": "hermes_mcp_client",
    "credential_id_hash": "hmac-sha256:demo-credential",
    "delegation_chain_hash": "sha256:demo-delegation-chain",
    "current_delegation_depth": 1,
    "max_delegation_depth": 2
  },
  "mcp_tool_call": {
    "mcp_server_id": "mcp_prod_research",
    "tool_name": "web_search",
    "tool_call_id": "toolcall_demo_001",
    "tool_arguments_hash": "sha256:demo-arguments"
  },
  "decision": {
    "result": "allow",
    "reason": "tool_allowlisted_budget_available",
    "cost_credits": 5,
    "remaining_credits": 495,
    "budget_id": "bud_prod_agents_daily",
    "decision_reason": "tool_allowlisted_budget_available"
  },
  "integrity": {
    "receipt_id": "rcpt_mcp_demo_001",
    "receipt_hash": "sha256:demo-receipt-hash",
    "receipt_signature": "ed25519:demo-signature",
    "canonicalization_alg": "json-c14n"
  }
}