X — 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": "x-mcp-server",
"source": {
"kind": "package",
"origin": "x-mcp-server"
},
"server": {
"name": "x-mcp-server"
}
},
"grade": "A",
"score": {
"score": 90,
"threatScore": 94,
"grade": "A",
"band": "A",
"categorySubtotals": {
"injection": 0,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 6.3,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "threat",
"ruleId": "MTC-SUP-005",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"rawWeight": 9,
"confidenceMult": 0.4,
"diminishingFactor": 1,
"appliedPenalty": 3.6
},
{
"kind": "threat",
"ruleId": "MTC-SUP-005",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"rawWeight": 9,
"confidenceMult": 0.4,
"diminishingFactor": 0.5,
"appliedPenalty": 1.8
},
{
"kind": "threat",
"ruleId": "MTC-SUP-005",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"rawWeight": 9,
"confidenceMult": 0.4,
"diminishingFactor": 0.25,
"appliedPenalty": 0.9
},
{
"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": [
"can send data / act on an external service"
],
"tags": [
"external-sink"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (21 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-SUP-005",
"title": "Near-miss of @sentry/mcp-server (edit distance 2)",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"description": "\"x-mcp-server\" is edit-distance 2 from the high-traffic package \"@sentry/mcp-server\". Verify this is the intended package.",
"remediation": "Confirm you meant \"@sentry/mcp-server\". Install packages only from their documented, official name.",
"location": {
"kind": "package",
"name": "x-mcp-server"
},
"owasp": "LLM03:2025 Supply Chain",
"references": [
"https://github.com/ossf/package-analysis",
"https://owasp.org/www-project-top-10-ci-cd-security-risks/"
],
"data": {
"candidate": "x-mcp-server",
"target": "@sentry/mcp-server"
}
},
{
"ruleId": "MTC-SUP-005",
"title": "Near-miss of exa-mcp-server (edit distance 2)",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"description": "\"x-mcp-server\" is edit-distance 2 from the package \"exa-mcp-server\". Verify this is the intended package.",
"remediation": "Confirm you meant \"exa-mcp-server\". Install packages only from their documented, official name.",
"location": {
"kind": "package",
"name": "x-mcp-server"
},
"owasp": "LLM03:2025 Supply Chain",
"references": [
"https://github.com/ossf/package-analysis",
"https://owasp.org/www-project-top-10-ci-cd-security-risks/"
],
"data": {
"candidate": "x-mcp-server",
"target": "exa-mcp-server"
}
},
{
"ruleId": "MTC-SUP-005",
"title": "Near-miss of @heroku/mcp-server (edit distance 2)",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"description": "\"x-mcp-server\" is edit-distance 2 from the package \"@heroku/mcp-server\". Verify this is the intended package.",
"remediation": "Confirm you meant \"@heroku/mcp-server\". Install packages only from their documented, official name.",
"location": {
"kind": "package",
"name": "x-mcp-server"
},
"owasp": "LLM03:2025 Supply Chain",
"references": [
"https://github.com/ossf/package-analysis",
"https://owasp.org/www-project-top-10-ci-cd-security-risks/"
],
"data": {
"candidate": "x-mcp-server",
"target": "@heroku/mcp-server"
}
},
{
"ruleId": "MTC-SUP-012",
"title": "Package has no license",
"category": "hygiene",
"severity": "info",
"confidence": "strong",
"description": "\"x-mcp-server\" has no declared license. This is a legal/reuse concern, not a security finding.",
"location": {
"kind": "package",
"name": "x-mcp-server"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "x_get_me",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_user_by_id",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_tweet",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_get_user_tweets",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_user_mentions",
"tags": [],
"reasons": {}
},
{
"tool": "x_search_tweets",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_home_timeline",
"tags": [],
"reasons": {}
},
{
"tool": "x_post_tweet",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_delete_tweet",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_like_tweet",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_unlike_tweet",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_retweet",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_unretweet",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_follow_user",
"tags": [],
"reasons": {}
},
{
"tool": "x_unfollow_user",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_followers",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_following",
"tags": [],
"reasons": {}
},
{
"tool": "x_post_thread",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "x_get_list_tweets",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_owned_lists",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "e3eb20abd71e7b3f571ec635f873d0f2b91590d9ea05ac1294f51fc2a91f8f2f",
"stats": {
"tools": 21,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 3,
"low": 0,
"info": 1
}
}
}