Nova App Builder

⬇ 293 downloads · ⭐ 2

High Risk

"Build and deploy Nova Platform apps (TEE apps on Sparsity Nova / sparsity.cloud). Use when a user wants to create a Nova app, write enclave application code, build it into a Docker image, and deploy it to the Nova Platform to get a live running URL. Handles the full lifecycle: scaffold, code, build, push, deploy, verify running. Triggers on requests like 'build me a Nova app', 'deploy to Nova Platform', 'create a TEE app on sparsity.cloud', 'I want to run an enclave app on Nova'."

H:4 D:4 A:3 C:1

⚠️ Hazard Flags

EXEC FS_DELETE NET_EGRESS_ANY NET_INGRESS CREDS_ENV ACT_POST_PUBLIC PI_WEB

📋 Capabilities

Execution

✅ Shell execution
❌ Code execution
❌ Install dependencies
❌ Persistence
Privilege: user

Filesystem

❌ Read workspace
❌ Write workspace
❌ Read home
❌ Write home
❌ Read system
✅ Delete

Network

Egress: any
✅ Ingress

Credentials

✅ Environment vars
❌ Credential files
❌ Browser data
❌ Keychain

Actions

❌ send messages✅ post public❌ purchase❌ transfer money❌ deploy❌ delete external

🔒 Containment

Level: maximum

Required:

APPROVE_POST: Can post publicly
SANDBOX_CONTAINER: Code execution capability

Recommended:

LOG_ACTIONS: Audit trail for all actions

⚡ Risks

Command injection risk: TIRITH_INSECURE_TLS, MCP_SQL_BLIND high

Social engineering indicators: SOCIAL_ENG_VAGUE_DESCRIPTION low

Mitigation: Provide clear, detailed description of skill functionality

Data exfiltration patterns: MCP_EXFIL_EXTERNAL_UPLOAD, DATA_EXFIL_NETWORK_REQUESTS, DATA_EXFIL_BASE64_AND_NETWORK critical

Mitigation: Document all external data transfers. Remove suspicious upload references.

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🚨 Incident Response

Kill switch: Stop the agent process

Containment: Review logs for unexpected actions

Recovery: Depends on skill capabilities

📄 Raw SSDS JSON click to expand

{
  "meta": {
    "document_id": "ssds:auto:nova-app-builder:2.3.1",
    "ssds_version": "0.2.0",
    "scanner_version": "0.4.0+fe6fd9123d50",
    "created_at": "2026-03-28T09:29:50.715Z",
    "created_by": {
      "agent": "safeagentskills-cli/generate-ssds"
    },
    "language": "en",
    "notes": "Auto-generated SSDS. Manual review recommended."
  },
  "skill": {
    "name": "Nova App Builder",
    "version": "2.3.1",
    "format": "agent_skill",
    "description": "\"Build and deploy Nova Platform apps (TEE apps on Sparsity Nova / sparsity.cloud). Use when a user wants to create a Nova app, write enclave application code, build it into a Docker image, and deploy it to the Nova Platform to get a live running URL. Handles the full lifecycle: scaffold, code, build, push, deploy, verify running. Triggers on requests like 'build me a Nova app', 'deploy to Nova Platform', 'create a TEE app on sparsity.cloud', 'I want to run an enclave app on Nova'.\"",
    "publisher": "ClawHub",
    "source": {
      "channel": "clawhub",
      "slug": "nova-app-builder",
      "owner": "zfdang",
      "downloads": 293,
      "stars": 2
    },
    "artifact": {
      "sha256": "5277f7f898d3db21c165d311f4fef6e8708dffa0b207e5846900c20a34c748ba",
      "hash_method": "files_sorted"
    }
  },
  "capabilities": {
    "execution": {
      "can_exec_shell": true,
      "can_exec_code": false,
      "privilege_level": "user",
      "can_install_deps": false,
      "can_persist": false
    },
    "filesystem": {
      "reads_workspace": false,
      "reads_user_home": false,
      "reads_system": false,
      "writes_workspace": false,
      "writes_user_home": false,
      "writes_system": false,
      "can_delete": true
    },
    "network": {
      "egress": "any",
      "ingress": true
    },
    "credentials": {
      "reads_env_vars": true,
      "reads_credential_files": false,
      "reads_browser_data": false,
      "reads_keychain": false
    },
    "services": [],
    "actions": {
      "can_send_messages": false,
      "can_post_public": true,
      "can_purchase": false,
      "can_transfer_money": false,
      "can_deploy": false,
      "can_delete_external": false
    },
    "prompt_injection_surfaces": [
      "web"
    ],
    "content_types": [
      "general"
    ]
  },
  "hazards": {
    "hdac": {
      "H": 4,
      "D": 4,
      "A": 3,
      "C": 1
    },
    "flags": [
      "EXEC",
      "FS_DELETE",
      "NET_EGRESS_ANY",
      "NET_INGRESS",
      "CREDS_ENV",
      "ACT_POST_PUBLIC",
      "PI_WEB"
    ],
    "custom_flags": [
      {
        "code": "FILE_DELETE",
        "name": "File Deletion",
        "description": "Can delete files in: scripts/scaffold.py"
      },
      {
        "code": "NET_INGRESS",
        "name": "Network Server",
        "description": "Listens for incoming connections in: SKILL.md, scripts/scaffold.py, assets/app-template/enclave/main.py"
      },
      {
        "code": "SOCIAL_ENGINEERING",
        "name": "Social Engineering Risk",
        "description": "SOCIAL_ENG_VAGUE_DESCRIPTION: Skill description is too vague or missing"
      },
      {
        "code": "COMMAND_INJECTION",
        "name": "Command Injection Risk",
        "description": "TIRITH_INSECURE_TLS, MCP_SQL_BLIND: Disabled TLS verification allows man-in-the-middle attacks"
      },
      {
        "code": "DATA_EXFILTRATION",
        "name": "Data Exfiltration Risk",
        "description": "MCP_EXFIL_EXTERNAL_UPLOAD, DATA_EXFIL_NETWORK_REQUESTS, DATA_EXFIL_BASE64_AND_NETWORK: Description mentions uploading data to external servers"
      }
    ],
    "confidence": {
      "level": "medium",
      "basis": [
        "static_analysis"
      ],
      "notes": "Detected 5 security patterns (9 vendored rule hits). Review recommended."
    },
    "rationale": {
      "H": "H4: Critical: Privilege escalation or malware detected",
      "D": "D4: Critical: Credential theft or data exfiltration",
      "A": "A3: External actions (deploy/message/post)",
      "C": "C1: General content"
    }
  },
  "containment": {
    "level": "maximum",
    "required": [
      {
        "control": "APPROVE_POST",
        "reason": "Can post publicly"
      },
      {
        "control": "SANDBOX_CONTAINER",
        "reason": "Code execution capability"
      }
    ],
    "recommended": [
      {
        "control": "LOG_ACTIONS",
        "reason": "Audit trail for all actions"
      }
    ],
    "uncontained_risk": "Risk level depends on manual review of actual capabilities."
  },
  "risks": {
    "risks": [
      {
        "risk": "Command injection risk: TIRITH_INSECURE_TLS, MCP_SQL_BLIND",
        "severity": "high"
      },
      {
        "risk": "Social engineering indicators: SOCIAL_ENG_VAGUE_DESCRIPTION",
        "severity": "low",
        "mitigation": "Provide clear, detailed description of skill functionality"
      },
      {
        "risk": "Data exfiltration patterns: MCP_EXFIL_EXTERNAL_UPLOAD, DATA_EXFIL_NETWORK_REQUESTS, DATA_EXFIL_BASE64_AND_NETWORK",
        "severity": "critical",
        "mitigation": "Document all external data transfers. Remove suspicious upload references."
      }
    ],
    "limitations": [
      "Static analysis only - runtime behavior not verified"
    ]
  },
  "incident_response": {
    "kill_switch": [
      "Stop the agent process"
    ],
    "containment": [
      "Review logs for unexpected actions"
    ],
    "recovery": [
      "Depends on skill capabilities"
    ]
  },
  "evidence": [
    {
      "evidence_id": "EV:file-1",
      "type": "file_excerpt",
      "title": "SKILL.md",
      "file_path": "SKILL.md"
    },
    {
      "evidence_id": "EV:file-2",
      "type": "file_excerpt",
      "title": "scripts/scaffold.py",
      "file_path": "scripts/scaffold.py"
    },
    {
      "evidence_id": "EV:file-3",
      "type": "file_excerpt",
      "title": "scripts/nova_deploy.py",
      "file_path": "scripts/nova_deploy.py"
    },
    {
      "evidence_id": "EV:file-4",
      "type": "file_excerpt",
      "title": "assets/app-template/enclave/odyn.py",
      "file_path": "assets/app-template/enclave/odyn.py"
    },
    {
      "evidence_id": "EV:file-5",
      "type": "file_excerpt",
      "title": "assets/app-template/enclave/main.py",
      "file_path": "assets/app-template/enclave/main.py"
    },
    {
      "evidence_id": "EV:file-6",
      "type": "file_excerpt",
      "title": "_meta.json",
      "file_path": "_meta.json"
    },
    {
      "evidence_id": "EV:cisco-1",
      "type": "file_excerpt",
      "title": "SOCIAL_ENG_VAGUE_DESCRIPTION [LOW] SKILL.md:1: ---",
      "file_path": "SKILL.md"
    },
    {
      "evidence_id": "EV:cisco-2",
      "type": "file_excerpt",
      "title": "MCP_EXFIL_EXTERNAL_UPLOAD [HIGH] SKILL.md:364: curl -sX POST https://<hostname>/.well-known/attestation --output attestation.bi",
      "file_path": "SKILL.md"
    },
    {
      "evidence_id": "EV:cisco-3",
      "type": "file_excerpt",
      "title": "TIRITH_USERINFO_TRICK [HIGH] SKILL.md:50: git remote set-url origin https://oauth2:${GH_TOKEN}@github.com/<user>/<repo>.gi",
      "file_path": "SKILL.md"
    },
    {
      "evidence_id": "EV:cisco-4",
      "type": "file_excerpt",
      "title": "TIRITH_INSECURE_TLS [HIGH] SKILL.md:364: curl -sX POST https://<hostname>/.well-known/attestation --output attestation.bi",
      "file_path": "SKILL.md"
    },
    {
      "evidence_id": "EV:cisco-5",
      "type": "file_excerpt",
      "title": "DATA_EXFIL_NETWORK_REQUESTS [MEDIUM] scripts/nova_deploy.py:44: import urllib.request",
      "file_path": "scripts/nova_deploy.py"
    },
    {
      "evidence_id": "EV:cisco-6",
      "type": "file_excerpt",
      "title": "MCP_SQL_BLIND [HIGH] scripts/nova_deploy.py:180: time.sleep(poll_interval)",
      "file_path": "scripts/nova_deploy.py"
    },
    {
      "evidence_id": "EV:cisco-7",
      "type": "file_excerpt",
      "title": "TIRITH_INSECURE_TLS [HIGH] scripts/nova_deploy.py:406: print(f\"\\nVerify:\\n  curl {app_url}/\\n  curl {app_url}/api/hello\\n  curl -X POST",
      "file_path": "scripts/nova_deploy.py"
    },
    {
      "evidence_id": "EV:cisco-8",
      "type": "file_excerpt",
      "title": "DATA_EXFIL_NETWORK_REQUESTS [MEDIUM] assets/app-template/enclave/odyn.py:15: import httpx",
      "file_path": "assets/app-template/enclave/odyn.py"
    },
    {
      "evidence_id": "EV:cisco-9",
      "type": "file_excerpt",
      "title": "DATA_EXFIL_BASE64_AND_NETWORK [CRITICAL] assets/app-template/enclave/odyn.py:78: body[\"nonce\"] = base64.b64encode(nonce).decode()",
      "file_path": "assets/app-template/enclave/odyn.py"
    }
  ]
}