Captain — the complete, unedited output of the deterministic mcptrustchecker engine v1.10.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.10.0",
"methodologyVersion": "mcptrustchecker-1.9"
},
"target": {
"id": "@captain-sdk/captain-mcp",
"source": {
"kind": "package",
"origin": "@captain-sdk/captain-mcp"
},
"server": {
"name": "@captain-sdk/captain-mcp"
}
},
"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-1.9"
},
"capability": {
"level": "moderate",
"reasons": [
"reads sensitive or local data"
],
"tags": [
"sensitive-source"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (19 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-CAP-008",
"title": "Unconstrained path parameter \"directory_path\" on \"captain_index_s3\"",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"captain_index_s3\" takes a path parameter \"directory_path\" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.",
"remediation": "Resolve and verify the path stays within an allowed root; reject traversal sequences.",
"location": {
"kind": "tool",
"name": "captain_index_s3",
"field": "inputSchema.properties.directory_path"
},
"data": {
"param": "directory_path"
}
},
{
"ruleId": "MTC-CAP-008",
"title": "Unconstrained path parameter \"file_path\" on \"captain_index_s3\"",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"captain_index_s3\" takes a path parameter \"file_path\" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.",
"remediation": "Resolve and verify the path stays within an allowed root; reject traversal sequences.",
"location": {
"kind": "tool",
"name": "captain_index_s3",
"field": "inputSchema.properties.file_path"
},
"data": {
"param": "file_path"
}
},
{
"ruleId": "MTC-CAP-008",
"title": "Unconstrained path parameter \"directory_path\" on \"captain_index_r2\"",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"captain_index_r2\" takes a path parameter \"directory_path\" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.",
"remediation": "Resolve and verify the path stays within an allowed root; reject traversal sequences.",
"location": {
"kind": "tool",
"name": "captain_index_r2",
"field": "inputSchema.properties.directory_path"
},
"data": {
"param": "directory_path"
}
},
{
"ruleId": "MTC-CAP-008",
"title": "Unconstrained path parameter \"file_path\" on \"captain_index_r2\"",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"captain_index_r2\" takes a path parameter \"file_path\" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.",
"remediation": "Resolve and verify the path stays within an allowed root; reject traversal sequences.",
"location": {
"kind": "tool",
"name": "captain_index_r2",
"field": "inputSchema.properties.file_path"
},
"data": {
"param": "file_path"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "captain_save",
"tags": [],
"reasons": {}
},
{
"tool": "captain_find",
"tags": [],
"reasons": {}
},
{
"tool": "captain_search",
"tags": [],
"reasons": {}
},
{
"tool": "captain_list_collections",
"tags": [],
"reasons": {}
},
{
"tool": "captain_create_collection",
"tags": [],
"reasons": {}
},
{
"tool": "captain_delete_collection",
"tags": [],
"reasons": {}
},
{
"tool": "captain_list_documents",
"tags": [],
"reasons": {}
},
{
"tool": "captain_delete_document",
"tags": [],
"reasons": {}
},
{
"tool": "captain_wipe_documents",
"tags": [],
"reasons": {}
},
{
"tool": "captain_job_status",
"tags": [],
"reasons": {}
},
{
"tool": "captain_cancel_job",
"tags": [],
"reasons": {}
},
{
"tool": "captain_index_url",
"tags": [],
"reasons": {}
},
{
"tool": "captain_index_youtube",
"tags": [],
"reasons": {}
},
{
"tool": "captain_index_text",
"tags": [],
"reasons": {}
},
{
"tool": "captain_index_file",
"tags": [],
"reasons": {}
},
{
"tool": "captain_index_s3",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"parameter \"secret\""
]
}
},
{
"tool": "captain_index_gcs",
"tags": [],
"reasons": {}
},
{
"tool": "captain_index_azure",
"tags": [],
"reasons": {}
},
{
"tool": "captain_index_r2",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"parameter \"secret\""
]
}
}
],
"surfaceDigest": "cac022b2f6f77d200108687b844277b0ec06635c45f9ff696553ecfde4aa857c",
"stats": {
"tools": 19,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 0,
"low": 4,
"info": 0
}
}
}