Freeagent — 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": "@oxygenbubbles/freeagent-mcp-server",
"source": {
"kind": "package",
"origin": "@oxygenbubbles/freeagent-mcp-server"
},
"server": {
"name": "@oxygenbubbles/freeagent-mcp-server"
}
},
"grade": "A",
"score": {
"score": 93,
"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": "high",
"label": "capability blast radius (high) — client exposure if the model is manipulated",
"appliedPenalty": 6
},
{
"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": "high",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"can send data / act on an external service",
"can execute shell commands or code"
],
"tags": [
"untrusted-input",
"code-exec",
"external-sink"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (42 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-002",
"title": "Shell/command execution in server code (dist/auth.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/auth.js:10`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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/auth.js"
},
"evidence": "; import { exec } from \"child_process\"; import { readFileSync, writeFileSync, existsSync } from \"fs\"; import { resolve a",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/auth.js",
"line": 10,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-003",
"title": "Hardcoded egress to an external endpoint (dist/services/distance.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`dist/services/distance.js:30`): 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/services/distance.js"
},
"evidence": "const response = await axios.get(\"https://api.openrouteservice.org/geocode/search\", { params: { api_key: apiKey",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "dist/services/distance.js",
"line": 30,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "freeagent_list_bank_accounts",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_bills",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_get_bill",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "freeagent_create_bill",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_bill",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_delete_bill",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_contacts",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_create_contact",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_contact",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_delete_contact",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_categories",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_expenses",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_create_expense",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_expense",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_delete_expense",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_invoices",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_get_invoice",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "freeagent_create_invoice",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_invoice",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_invoice_status",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_delete_invoice",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_create_mileage_expense",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_projects",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_create_project",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_project",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_delete_project",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_profit_and_loss",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_trial_balance",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_aged_debtors",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_aged_creditors",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_tax_timeline",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_company_summary",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_tasks",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_create_task",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_timeslips",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_create_timeslip",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_delete_timeslip",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_task",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_delete_task",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_update_timeslip",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_list_transactions",
"tags": [],
"reasons": {}
},
{
"tool": "freeagent_explain_transaction",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "5539541a0ac337146ce17aa80a1719bd76958bd5d5e8b26f57479744f655d76e",
"stats": {
"tools": 42,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 1,
"low": 0,
"info": 0
}
}
}