Narrarium — the complete, unedited output of the deterministic mcptrustchecker engine v1.13.0, scanned . 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": "narrarium-mcp-server",
"source": {
"kind": "package",
"origin": "narrarium-mcp-server"
},
"server": {
"name": "narrarium-mcp-server"
}
},
"grade": "A",
"score": {
"score": 97,
"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": "moderate",
"label": "capability blast radius (moderate) — client exposure if the model is manipulated",
"appliedPenalty": 3
},
{
"kind": "client",
"term": "verification-discount",
"level": "source",
"label": "publisher verification (provenance) — cryptographic build provenance ties the artifact to its source",
"appliedPenalty": 0
},
{
"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": "moderate",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"can send data / act on an external service"
],
"tags": [
"untrusted-input",
"external-sink"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (80 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-SRC-003",
"title": "Hardcoded egress to an external endpoint (dist/index.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`dist/index.js:1992`): A hardcoded outbound call to a fixed external host inside server code is a classic exfiltration/telemetry channel — especially paired with reads of local data. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "dist/index.js"
},
"evidence": "const response = await fetch(\"https://api.openai.com/v1/images/generations\", { method: \"POST\", headers:",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "dist/index.js",
"line": 1992,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "init_book_repo",
"tags": [],
"reasons": {}
},
{
"tool": "setup_framework",
"tags": [],
"reasons": {}
},
{
"tool": "repository_spec",
"tags": [],
"reasons": {}
},
{
"tool": "start_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "wizard_answer",
"tags": [],
"reasons": {}
},
{
"tool": "wizard_status",
"tags": [],
"reasons": {}
},
{
"tool": "wizard_finalize",
"tags": [],
"reasons": {}
},
{
"tool": "wizard_cancel",
"tags": [],
"reasons": {}
},
{
"tool": "character_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "create_character",
"tags": [],
"reasons": {}
},
{
"tool": "location_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "create_location",
"tags": [],
"reasons": {}
},
{
"tool": "faction_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "create_faction",
"tags": [],
"reasons": {}
},
{
"tool": "item_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "create_item",
"tags": [],
"reasons": {}
},
{
"tool": "secret_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "create_secret",
"tags": [],
"reasons": {}
},
{
"tool": "timeline_event_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "create_timeline_event",
"tags": [],
"reasons": {}
},
{
"tool": "chapter_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "paragraph_wizard",
"tags": [],
"reasons": {}
},
{
"tool": "chapter_writing_context",
"tags": [],
"reasons": {}
},
{
"tool": "paragraph_writing_context",
"tags": [],
"reasons": {}
},
{
"tool": "revise_chapter",
"tags": [],
"reasons": {}
},
{
"tool": "revise_paragraph",
"tags": [],
"reasons": {}
},
{
"tool": "review_dialogue_action_beats",
"tags": [],
"reasons": {}
},
{
"tool": "resume_book_context",
"tags": [],
"reasons": {}
},
{
"tool": "create_entity",
"tags": [],
"reasons": {}
},
{
"tool": "create_chapter",
"tags": [],
"reasons": {}
},
{
"tool": "create_paragraph",
"tags": [],
"reasons": {}
},
{
"tool": "create_chapter_draft",
"tags": [],
"reasons": {}
},
{
"tool": "update_chapter_draft",
"tags": [],
"reasons": {}
},
{
"tool": "update_book_notes",
"tags": [],
"reasons": {}
},
{
"tool": "save_book_item",
"tags": [],
"reasons": {}
},
{
"tool": "save_chapter_item",
"tags": [],
"reasons": {}
},
{
"tool": "update_chapter_notes",
"tags": [],
"reasons": {}
},
{
"tool": "promote_book_item",
"tags": [],
"reasons": {}
},
{
"tool": "promote_chapter_item",
"tags": [],
"reasons": {}
},
{
"tool": "create_paragraph_draft",
"tags": [],
"reasons": {}
},
{
"tool": "update_paragraph_draft",
"tags": [],
"reasons": {}
},
{
"tool": "create_chapter_from_draft",
"tags": [],
"reasons": {}
},
{
"tool": "create_paragraph_from_draft",
"tags": [],
"reasons": {}
},
{
"tool": "create_asset_prompt",
"tags": [],
"reasons": {}
},
{
"tool": "register_asset",
"tags": [],
"reasons": {}
},
{
"tool": "generate_asset_image",
"tags": [],
"reasons": {}
},
{
"tool": "update_chapter",
"tags": [],
"reasons": {}
},
{
"tool": "update_paragraph",
"tags": [],
"reasons": {}
},
{
"tool": "apply_dialogue_action_beats",
"tags": [],
"reasons": {}
},
{
"tool": "search_book",
"tags": [],
"reasons": {}
},
{
"tool": "query_canon",
"tags": [],
"reasons": {}
},
{
"tool": "validate_book",
"tags": [],
"reasons": {}
},
{
"tool": "update_entity",
"tags": [],
"reasons": {}
},
{
"tool": "rename_entity",
"tags": [],
"reasons": {}
},
{
"tool": "rename_chapter",
"tags": [],
"reasons": {}
},
{
"tool": "rename_paragraph",
"tags": [],
"reasons": {}
},
{
"tool": "list_related_canon",
"tags": [],
"reasons": {}
},
{
"tool": "sync_resume",
"tags": [],
"reasons": {}
},
{
"tool": "sync_all_resumes",
"tags": [],
"reasons": {}
},
{
"tool": "sync_story_state",
"tags": [],
"reasons": {}
},
{
"tool": "sync_plot",
"tags": [],
"reasons": {}
},
{
"tool": "evaluate_chapter",
"tags": [],
"reasons": {}
},
{
"tool": "evaluate_paragraph",
"tags": [],
"reasons": {}
},
{
"tool": "prepare_paragraph_evaluation",
"tags": [],
"reasons": {}
},
{
"tool": "write_paragraph_evaluation",
"tags": [],
"reasons": {}
},
{
"tool": "evaluate_book",
"tags": [],
"reasons": {}
},
{
"tool": "wikipedia_search",
"tags": [],
"reasons": {}
},
{
"tool": "wikipedia_page",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "export_epub",
"tags": [],
"reasons": {}
},
{
"tool": "create_persona",
"tags": [],
"reasons": {}
},
{
"tool": "seed_default_personas",
"tags": [],
"reasons": {}
},
{
"tool": "list_personas",
"tags": [],
"reasons": {}
},
{
"tool": "review_chapter_with_personas",
"tags": [],
"reasons": {}
},
{
"tool": "create_script",
"tags": [],
"reasons": {}
},
{
"tool": "update_script",
"tags": [],
"reasons": {}
},
{
"tool": "sync_script_ledger",
"tags": [],
"reasons": {}
},
{
"tool": "read_script_ledger",
"tags": [],
"reasons": {}
},
{
"tool": "read_script",
"tags": [],
"reasons": {}
},
{
"tool": "script_to_paragraph",
"tags": [],
"reasons": {}
},
{
"tool": "paragraph_to_script",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "27de1a100233cdc9c8d8e1a7bb757517fbe293c9b583ea6c92f1e1a8878e4871",
"stats": {
"tools": 80,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 1,
"low": 0,
"info": 0
}
}
}