Raw scan report

File Contents Reader — the complete, unedited output of the deterministic mcptrustchecker engine v1.13.0, scanned 2026-08-25. Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.

{
  "tool": {
    "name": "mcptrustchecker",
    "version": "1.13.0",
    "methodologyVersion": "mcptrustchecker-1.13"
  },
  "target": {
    "id": "mcp-file-contents-reader",
    "source": {
      "kind": "package",
      "origin": "mcp-file-contents-reader"
    },
    "server": {
      "name": "mcp-file-contents-reader"
    }
  },
  "grade": "A",
  "score": {
    "score": 93,
    "threatScore": 100,
    "grade": "A",
    "band": "A",
    "categorySubtotals": {
      "injection": 0,
      "exfiltration": 0,
      "permissions": 0,
      "supply-chain": 0,
      "network": 0,
      "hygiene": 0
    },
    "vector": [
      {
        "kind": "client",
        "term": "capability-exposure",
        "level": "high",
        "label": "capability blast radius (high) — client exposure if the model is manipulated",
        "appliedPenalty": 6
      },
      {
        "kind": "client",
        "term": "verification-discount",
        "level": "repo",
        "label": "publisher verification (public source) — no provenance, but the source is public and inspectable",
        "appliedPenalty": 1
      },
      {
        "kind": "client",
        "term": "coverage-honesty",
        "level": "source",
        "label": "inspection depth (source) — how much of the target the scan could see",
        "appliedPenalty": 0
      }
    ],
    "gatesFired": [],
    "methodologyVersion": "mcptrustchecker-1.13"
  },
  "capability": {
    "level": "high",
    "reasons": [
      "can send data / act on an external service",
      "reads sensitive or local data",
      "has a read → egress path (a data-exfiltration surface)"
    ],
    "tags": [
      "sensitive-source",
      "external-sink"
    ]
  },
  "coverage": {
    "level": "source",
    "inputs": {
      "toolSurface": true,
      "implementationSource": true,
      "packageMetadata": true,
      "liveTransport": false
    },
    "caveats": [
      "Tools were statically extracted from the published source (9 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command \"npx -y <package>\"."
    ]
  },
  "findings": [
    {
      "ruleId": "MTC-FLOW-004",
      "title": "Sensitive-source and external-sink co-exist",
      "category": "exfiltration",
      "severity": "high",
      "confidence": "strong",
      "description": "Tools that read sensitive data ([read_file]) and tools that can send data out ([upload_file]) are exposed together. An agent can move private data to the sink.",
      "remediation": "Keep secret-reading and egress capabilities on separate, separately-approved servers.",
      "location": {
        "kind": "flow",
        "name": "read_file → upload_file"
      },
      "evidence": "sources [read_file] → sinks [upload_file]",
      "owasp": "LLM02:2025 Sensitive Information Disclosure",
      "references": [],
      "data": {
        "sources": [
          "read_file"
        ],
        "sinks": [
          "upload_file"
        ]
      }
    },
    {
      "ruleId": "MTC-SUP-012",
      "title": "Package has no license",
      "category": "hygiene",
      "severity": "info",
      "confidence": "strong",
      "description": "\"mcp-file-contents-reader\" has no declared license. This is a legal/reuse concern, not a security finding.",
      "location": {
        "kind": "package",
        "name": "mcp-file-contents-reader"
      }
    }
  ],
  "toxicFlows": [
    {
      "id": "flow-1",
      "severity": "high",
      "confidence": "strong",
      "untrustedInput": [],
      "sensitiveSource": [
        "read_file"
      ],
      "externalSink": [
        "upload_file"
      ],
      "selfContained": false,
      "path": [
        "read_file",
        "upload_file"
      ],
      "pathWired": false,
      "description": "A sensitive-source → external-sink chain exists: read_file → upload_file."
    }
  ],
  "capabilities": [
    {
      "tool": "read_file",
      "tags": [
        "sensitive-source"
      ],
      "reasons": {
        "sensitive-source": [
          "keyword \"read_file\""
        ]
      }
    },
    {
      "tool": "list_supported_formats",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "get_file_info",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "upload_file",
      "tags": [
        "external-sink"
      ],
      "reasons": {
        "external-sink": [
          "keyword \"upload_file\""
        ]
      }
    },
    {
      "tool": "read_uploaded_file",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "list_uploaded_files",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "delete_uploaded_file",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "search_documents",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "analyze_file_content",
      "tags": [],
      "reasons": {}
    }
  ],
  "surfaceDigest": "ba41605685e84bb06c5dd8d6e74eed1de66a2b419438535e45a96a6233b50229",
  "stats": {
    "tools": 9,
    "prompts": 0,
    "resources": 0,
    "findingsBySeverity": {
      "critical": 0,
      "high": 1,
      "medium": 0,
      "low": 0,
      "info": 1
    }
  }
}