Datamerge — 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": "@datamerge/mcp",
"source": {
"kind": "package",
"origin": "@datamerge/mcp"
},
"server": {
"name": "@datamerge/mcp"
}
},
"grade": "B",
"score": {
"score": 81,
"threatScore": 85,
"grade": "B",
"band": "B",
"categorySubtotals": {
"injection": 15.4,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 0,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "threat",
"ruleId": "MTC-INJ-SHADOW-3",
"category": "injection",
"severity": "high",
"confidence": "strong",
"rawWeight": 22,
"confidenceMult": 0.7,
"diminishingFactor": 1,
"appliedPenalty": 15.4
},
{
"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 (23 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-INJ-SHADOW-3",
"title": "Tool-selection hijack (suppress all other tools)",
"category": "injection",
"severity": "high",
"confidence": "strong",
"description": "Tool-selection hijack (suppress all other tools) detected in the description of tool \"run_company_enrichment\". Instruction-like content in tool metadata is executed by the model, not the human, and is the primary tool-poisoning vector.",
"remediation": "Tool descriptions should describe behavior, not instruct the assistant. Treat imperative / secrecy / sequencing language in metadata as hostile.",
"location": {
"kind": "tool",
"name": "run_company_enrichment",
"field": "description"
},
"evidence": "do not call any other tool",
"owasp": "LLM01:2025 Prompt Injection",
"data": {
"kind": "shadowing"
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"webhook_url\" on \"start_company_enrichment\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"start_company_enrichment\" takes a URL/host parameter \"webhook_url\" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).",
"remediation": "Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.",
"location": {
"kind": "tool",
"name": "start_company_enrichment",
"field": "inputSchema.properties.webhook_url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "webhook_url"
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"webhook_url\" on \"start_company_enrichment_and_wait\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"start_company_enrichment_and_wait\" takes a URL/host parameter \"webhook_url\" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).",
"remediation": "Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.",
"location": {
"kind": "tool",
"name": "start_company_enrichment_and_wait",
"field": "inputSchema.properties.webhook_url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "webhook_url"
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"webhook_url\" on \"run_company_enrichment\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"run_company_enrichment\" takes a URL/host parameter \"webhook_url\" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).",
"remediation": "Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.",
"location": {
"kind": "tool",
"name": "run_company_enrichment",
"field": "inputSchema.properties.webhook_url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "webhook_url"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "configure_datamerge",
"tags": [],
"reasons": {}
},
{
"tool": "start_company_enrichment",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"parameter \"webhook\""
]
}
},
{
"tool": "get_company_enrichment_result",
"tags": [],
"reasons": {}
},
{
"tool": "start_company_enrichment_and_wait",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"parameter \"webhook\""
]
}
},
{
"tool": "run_company_enrichment",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"parameter \"webhook\""
]
}
},
{
"tool": "run_contact_enrich",
"tags": [],
"reasons": {}
},
{
"tool": "run_contact_search",
"tags": [],
"reasons": {}
},
{
"tool": "get_company",
"tags": [],
"reasons": {}
},
{
"tool": "get_company_hierarchy",
"tags": [],
"reasons": {}
},
{
"tool": "contact_search",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"parameter \"webhook\""
]
}
},
{
"tool": "get_contact_search_status",
"tags": [],
"reasons": {}
},
{
"tool": "contact_enrich",
"tags": [],
"reasons": {}
},
{
"tool": "get_contact_enrich_status",
"tags": [],
"reasons": {}
},
{
"tool": "get_contact",
"tags": [],
"reasons": {}
},
{
"tool": "list_lists",
"tags": [],
"reasons": {}
},
{
"tool": "create_list",
"tags": [],
"reasons": {}
},
{
"tool": "get_list_items",
"tags": [],
"reasons": {}
},
{
"tool": "remove_list_item",
"tags": [],
"reasons": {}
},
{
"tool": "delete_list",
"tags": [],
"reasons": {}
},
{
"tool": "get_credits_balance",
"tags": [],
"reasons": {}
},
{
"tool": "health_check",
"tags": [],
"reasons": {}
},
{
"tool": "contact_search_unenriched",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"parameter \"webhook\""
]
}
},
{
"tool": "run_contact_search_unenriched",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "641c81a46c5945aadad49b4e1cf0c5e6f36af3220b43f2471a47e4075d1c3f2b",
"stats": {
"tools": 23,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 3,
"low": 0,
"info": 0
}
}
}