Nostr — 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": "nostr-mcp-server",
"source": {
"kind": "package",
"origin": "nostr-mcp-server"
},
"server": {
"name": "nostr-mcp-server"
}
},
"grade": "A",
"score": {
"score": 96,
"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": "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": "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 (40 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 (build/nips-tools.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`build/nips-tools.js:134`): 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": "build/nips-tools.js"
},
"evidence": "const response = await fetch('https://api.github.com/repos/nostr-protocol/nips/contents', { headers }); //",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "build/nips-tools.js",
"line": 134,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-003",
"title": "Hardcoded egress to an external endpoint (build/nips/nips-tools.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`build/nips/nips-tools.js:198`): 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": "build/nips/nips-tools.js"
},
"evidence": "const response = await fetch('https://api.github.com/repos/nostr-protocol/nips/contents', { headers,",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "build/nips/nips-tools.js",
"line": 198,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "getProfile",
"tags": [],
"reasons": {}
},
{
"tool": "getKind1Notes",
"tags": [],
"reasons": {}
},
{
"tool": "getReceivedZaps",
"tags": [],
"reasons": {}
},
{
"tool": "getSentZaps",
"tags": [],
"reasons": {}
},
{
"tool": "getAllZaps",
"tags": [],
"reasons": {}
},
{
"tool": "getLongFormNotes",
"tags": [],
"reasons": {}
},
{
"tool": "queryEvents",
"tags": [],
"reasons": {}
},
{
"tool": "getContactList",
"tags": [],
"reasons": {}
},
{
"tool": "getFollowing",
"tags": [],
"reasons": {}
},
{
"tool": "getRelayList",
"tags": [],
"reasons": {}
},
{
"tool": "setRelayList",
"tags": [],
"reasons": {}
},
{
"tool": "follow",
"tags": [],
"reasons": {}
},
{
"tool": "unfollow",
"tags": [],
"reasons": {}
},
{
"tool": "reactToEvent",
"tags": [],
"reasons": {}
},
{
"tool": "repostEvent",
"tags": [],
"reasons": {}
},
{
"tool": "deleteEvent",
"tags": [],
"reasons": {}
},
{
"tool": "replyToEvent",
"tags": [],
"reasons": {}
},
{
"tool": "encryptNip04",
"tags": [],
"reasons": {}
},
{
"tool": "decryptNip04",
"tags": [],
"reasons": {}
},
{
"tool": "sendDmNip04",
"tags": [],
"reasons": {}
},
{
"tool": "getDmConversationNip04",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "encryptNip44",
"tags": [],
"reasons": {}
},
{
"tool": "decryptNip44",
"tags": [],
"reasons": {}
},
{
"tool": "sendDmNip44",
"tags": [],
"reasons": {}
},
{
"tool": "decryptDmNip44",
"tags": [],
"reasons": {}
},
{
"tool": "getDmInboxNip44",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "sendAnonymousZap",
"tags": [],
"reasons": {}
},
{
"tool": "convertNip19",
"tags": [],
"reasons": {}
},
{
"tool": "analyzeNip19",
"tags": [],
"reasons": {}
},
{
"tool": "postAnonymousNote",
"tags": [],
"reasons": {}
},
{
"tool": "createKeypair",
"tags": [],
"reasons": {}
},
{
"tool": "createProfile",
"tags": [],
"reasons": {}
},
{
"tool": "updateProfile",
"tags": [],
"reasons": {}
},
{
"tool": "postNote",
"tags": [],
"reasons": {}
},
{
"tool": "createNote",
"tags": [],
"reasons": {}
},
{
"tool": "signNote",
"tags": [],
"reasons": {}
},
{
"tool": "publishNote",
"tags": [],
"reasons": {}
},
{
"tool": "createNostrEvent",
"tags": [],
"reasons": {}
},
{
"tool": "signNostrEvent",
"tags": [],
"reasons": {}
},
{
"tool": "publishNostrEvent",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "d0c13666ab61e63971b18750df8dbd81239e1210f20b80db0eaea69a0a4db4f1",
"stats": {
"tools": 40,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 2,
"low": 0,
"info": 0
}
}
}