Canvas Agent — 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": "canvas-agent",
"source": {
"kind": "package",
"origin": "canvas-agent"
},
"server": {
"name": "canvas-agent"
}
},
"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 create, modify or delete files",
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"untrusted-input, sensitive-source and egress co-exist across tools (toxic-flow surface)"
],
"tags": [
"external-sink",
"sensitive-source",
"untrusted-input",
"file-write"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (134 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-FLOW-002",
"title": "Completed toxic-flow trifecta across tools",
"category": "exfiltration",
"severity": "critical",
"confidence": "strong",
"description": "This server (without client built-ins) exposes a complete data-exfiltration chain: download_discussion_entries → list_course_files → send_message. Untrusted input is ingested, private data is read, and it can be sent to an external sink via the agent composing the tools (→). Static analysis proves the primitive exists, not that a specific run will occur.",
"remediation": "Remove one leg of the trifecta: isolate untrusted-input tools from secret-reading tools and from egress tools, or require human approval between them.",
"location": {
"kind": "flow",
"name": "download_discussion_entries → list_course_files → send_message"
},
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"references": [],
"data": {
"untrusted": [
"get_file",
"generate_quiz_report",
"list_pages",
"get_page",
"download_submissions",
"download_discussion_entries"
],
"sources": [
"list_course_files"
],
"sinks": [
"send_message"
],
"path": [
"download_discussion_entries",
"list_course_files",
"send_message"
],
"edges": [
{
"from": "download_discussion_entries",
"to": "list_course_files",
"kind": "agent-mediated"
},
{
"from": "list_course_files",
"to": "send_message",
"kind": "agent-mediated"
}
],
"wired": false
}
},
{
"ruleId": "MTC-CAP-002",
"title": "Tool \"delete_file\" can modify the filesystem",
"category": "permissions",
"severity": "medium",
"confidence": "strong",
"description": "Tool \"delete_file\" can write, overwrite or delete files (keyword \"delete_file\" in tool name). Verify it is scoped to a safe directory.",
"remediation": "Constrain file operations to an explicit, non-sensitive root; reject path traversal.",
"location": {
"kind": "tool",
"name": "delete_file"
},
"data": {
"tags": [
"file-write"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"delete_file\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"delete_file\" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.",
"remediation": "Declare accurate annotations, and gate destructive tools on user confirmation regardless.",
"location": {
"kind": "tool",
"name": "delete_file"
},
"data": {
"tags": [
"file-write"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in packaging/dev tooling (dist/setup.js)",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "In a packaging/dev/install script (shipped, but not the server runtime) (`dist/setup.js:8`): 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/setup.js"
},
"evidence": "c, execFileSync } from \"child_process\"; import { stdin, stdout, platform } from \"process\"; import { readFileSync, writeF",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/setup.js",
"line": 8,
"nonRuntime": true
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "critical",
"confidence": "strong",
"untrustedInput": [
"get_file",
"generate_quiz_report",
"list_pages",
"get_page",
"download_submissions",
"download_discussion_entries"
],
"sensitiveSource": [
"list_course_files"
],
"externalSink": [
"send_message"
],
"selfContained": false,
"path": [
"download_discussion_entries",
"list_course_files",
"send_message"
],
"pathWired": false,
"description": "A cross-tool exfiltration chain exists: download_discussion_entries → list_course_files → send_message."
}
],
"capabilities": [
{
"tool": "get_course_activity",
"tags": [],
"reasons": {}
},
{
"tool": "get_course_assignment_analytics",
"tags": [],
"reasons": {}
},
{
"tool": "get_student_summaries",
"tags": [],
"reasons": {}
},
{
"tool": "get_student_activity",
"tags": [],
"reasons": {}
},
{
"tool": "get_student_assignment_data",
"tags": [],
"reasons": {}
},
{
"tool": "get_student_messaging_data",
"tags": [],
"reasons": {}
},
{
"tool": "list_assignments",
"tags": [],
"reasons": {}
},
{
"tool": "get_assignment",
"tags": [],
"reasons": {}
},
{
"tool": "create_assignment",
"tags": [],
"reasons": {}
},
{
"tool": "update_assignment",
"tags": [],
"reasons": {}
},
{
"tool": "delete_assignment",
"tags": [],
"reasons": {}
},
{
"tool": "batch_update_assignments",
"tags": [],
"reasons": {}
},
{
"tool": "list_calendar_events",
"tags": [],
"reasons": {}
},
{
"tool": "create_calendar_event",
"tags": [],
"reasons": {}
},
{
"tool": "update_calendar_event",
"tags": [],
"reasons": {}
},
{
"tool": "delete_calendar_event",
"tags": [],
"reasons": {}
},
{
"tool": "post_submission_comment",
"tags": [],
"reasons": {}
},
{
"tool": "send_message",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"send_message\""
]
}
},
{
"tool": "create_announcement",
"tags": [],
"reasons": {}
},
{
"tool": "list_courses",
"tags": [],
"reasons": {}
},
{
"tool": "list_terms",
"tags": [],
"reasons": {}
},
{
"tool": "list_assignment_groups",
"tags": [],
"reasons": {}
},
{
"tool": "list_modules",
"tags": [],
"reasons": {}
},
{
"tool": "list_grading_periods",
"tags": [],
"reasons": {}
},
{
"tool": "list_term_courses",
"tags": [],
"reasons": {}
},
{
"tool": "create_course",
"tags": [],
"reasons": {}
},
{
"tool": "update_course_settings",
"tags": [],
"reasons": {}
},
{
"tool": "conclude_course",
"tags": [],
"reasons": {}
},
{
"tool": "delete_course",
"tags": [],
"reasons": {}
},
{
"tool": "reset_course_content",
"tags": [],
"reasons": {}
},
{
"tool": "copy_course_content",
"tags": [],
"reasons": {}
},
{
"tool": "list_course_tabs",
"tags": [],
"reasons": {}
},
{
"tool": "update_course_navigation",
"tags": [],
"reasons": {}
},
{
"tool": "list_discussions",
"tags": [],
"reasons": {}
},
{
"tool": "get_discussion",
"tags": [],
"reasons": {}
},
{
"tool": "create_discussion",
"tags": [],
"reasons": {}
},
{
"tool": "update_discussion",
"tags": [],
"reasons": {}
},
{
"tool": "batch_update_discussions",
"tags": [],
"reasons": {}
},
{
"tool": "list_students",
"tags": [],
"reasons": {}
},
{
"tool": "list_sections",
"tags": [],
"reasons": {}
},
{
"tool": "get_student_enrollments",
"tags": [],
"reasons": {}
},
{
"tool": "list_users_in_course",
"tags": [],
"reasons": {}
},
{
"tool": "get_user_profile",
"tags": [],
"reasons": {}
},
{
"tool": "crosslist_section",
"tags": [],
"reasons": {}
},
{
"tool": "decrosslist_section",
"tags": [],
"reasons": {}
},
{
"tool": "create_section",
"tags": [],
"reasons": {}
},
{
"tool": "update_section",
"tags": [],
"reasons": {}
},
{
"tool": "delete_section",
"tags": [],
"reasons": {}
},
{
"tool": "enroll_user",
"tags": [],
"reasons": {}
},
{
"tool": "update_enrollment_state",
"tags": [],
"reasons": {}
},
{
"tool": "delete_enrollment",
"tags": [],
"reasons": {}
},
{
"tool": "move_student_to_section",
"tags": [],
"reasons": {}
},
{
"tool": "list_course_files",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"list_files\""
]
}
},
{
"tool": "get_file",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "list_folders",
"tags": [],
"reasons": {}
},
{
"tool": "create_folder",
"tags": [],
"reasons": {}
},
{
"tool": "delete_file",
"tags": [
"file-write"
],
"reasons": {
"file-write": [
"keyword \"delete_file\" in tool name"
]
}
},
{
"tool": "update_file",
"tags": [],
"reasons": {}
},
{
"tool": "get_file_quota",
"tags": [],
"reasons": {}
},
{
"tool": "grade_submission",
"tags": [],
"reasons": {}
},
{
"tool": "bulk_grade",
"tags": [],
"reasons": {}
},
{
"tool": "submission_summary",
"tags": [],
"reasons": {}
},
{
"tool": "list_missing_submissions",
"tags": [],
"reasons": {}
},
{
"tool": "list_gradeable_students",
"tags": [],
"reasons": {}
},
{
"tool": "post_grades",
"tags": [],
"reasons": {}
},
{
"tool": "hide_grades",
"tags": [],
"reasons": {}
},
{
"tool": "get_late_policy",
"tags": [],
"reasons": {}
},
{
"tool": "set_late_policy",
"tags": [],
"reasons": {}
},
{
"tool": "get_grading_standards",
"tags": [],
"reasons": {}
},
{
"tool": "list_group_categories",
"tags": [],
"reasons": {}
},
{
"tool": "create_group_set",
"tags": [],
"reasons": {}
},
{
"tool": "list_groups",
"tags": [],
"reasons": {}
},
{
"tool": "create_group",
"tags": [],
"reasons": {}
},
{
"tool": "add_user_to_group",
"tags": [],
"reasons": {}
},
{
"tool": "remove_user_from_group",
"tags": [],
"reasons": {}
},
{
"tool": "auto_distribute_unassigned",
"tags": [],
"reasons": {}
},
{
"tool": "describe_canvas_mcps",
"tags": [],
"reasons": {}
},
{
"tool": "create_module",
"tags": [],
"reasons": {}
},
{
"tool": "update_module",
"tags": [],
"reasons": {}
},
{
"tool": "delete_module",
"tags": [],
"reasons": {}
},
{
"tool": "list_module_items",
"tags": [],
"reasons": {}
},
{
"tool": "add_module_item",
"tags": [],
"reasons": {}
},
{
"tool": "update_module_item",
"tags": [],
"reasons": {}
},
{
"tool": "delete_module_item",
"tags": [],
"reasons": {}
},
{
"tool": "publish_module",
"tags": [],
"reasons": {}
},
{
"tool": "list_new_quizzes",
"tags": [],
"reasons": {}
},
{
"tool": "get_new_quiz",
"tags": [],
"reasons": {}
},
{
"tool": "create_new_quiz",
"tags": [],
"reasons": {}
},
{
"tool": "update_new_quiz",
"tags": [],
"reasons": {}
},
{
"tool": "list_quiz_items",
"tags": [],
"reasons": {}
},
{
"tool": "get_quiz_item",
"tags": [],
"reasons": {}
},
{
"tool": "create_quiz_item",
"tags": [],
"reasons": {}
},
{
"tool": "update_quiz_item",
"tags": [],
"reasons": {}
},
{
"tool": "delete_quiz_item",
"tags": [],
"reasons": {}
},
{
"tool": "set_quiz_accommodations",
"tags": [],
"reasons": {}
},
{
"tool": "generate_quiz_report",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "list_outcomes",
"tags": [],
"reasons": {}
},
{
"tool": "list_outcome_groups",
"tags": [],
"reasons": {}
},
{
"tool": "get_outcome",
"tags": [],
"reasons": {}
},
{
"tool": "list_outcome_results",
"tags": [],
"reasons": {}
},
{
"tool": "get_outcome_rollups",
"tags": [],
"reasons": {}
},
{
"tool": "list_pages",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"get_page\""
]
}
},
{
"tool": "get_page",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"get_page\""
]
}
},
{
"tool": "create_page",
"tags": [],
"reasons": {}
},
{
"tool": "update_page",
"tags": [],
"reasons": {}
},
{
"tool": "delete_page",
"tags": [],
"reasons": {}
},
{
"tool": "list_page_revisions",
"tags": [],
"reasons": {}
},
{
"tool": "get_front_page",
"tags": [],
"reasons": {}
},
{
"tool": "list_quizzes",
"tags": [],
"reasons": {}
},
{
"tool": "get_quiz",
"tags": [],
"reasons": {}
},
{
"tool": "update_quiz",
"tags": [],
"reasons": {}
},
{
"tool": "list_rubrics",
"tags": [],
"reasons": {}
},
{
"tool": "get_rubric",
"tags": [],
"reasons": {}
},
{
"tool": "create_rubric",
"tags": [],
"reasons": {}
},
{
"tool": "update_rubric",
"tags": [],
"reasons": {}
},
{
"tool": "delete_rubric",
"tags": [],
"reasons": {}
},
{
"tool": "associate_rubric",
"tags": [],
"reasons": {}
},
{
"tool": "update_rubric_association",
"tags": [],
"reasons": {}
},
{
"tool": "remove_rubric_from_assignment",
"tags": [],
"reasons": {}
},
{
"tool": "grade_with_rubric",
"tags": [],
"reasons": {}
},
{
"tool": "get_rubric_assessments",
"tags": [],
"reasons": {}
},
{
"tool": "copy_rubric",
"tags": [],
"reasons": {}
},
{
"tool": "update_rubric_assessment",
"tags": [],
"reasons": {}
},
{
"tool": "delete_rubric_assessment",
"tags": [],
"reasons": {}
},
{
"tool": "update_assignment_dates",
"tags": [],
"reasons": {}
},
{
"tool": "batch_update_dates",
"tags": [],
"reasons": {}
},
{
"tool": "create_assignment_override",
"tags": [],
"reasons": {}
},
{
"tool": "list_assignment_overrides",
"tags": [],
"reasons": {}
},
{
"tool": "update_assignment_override",
"tags": [],
"reasons": {}
},
{
"tool": "get_course_schedule_overview",
"tags": [],
"reasons": {}
},
{
"tool": "update_quiz_dates",
"tags": [],
"reasons": {}
},
{
"tool": "list_submissions",
"tags": [],
"reasons": {}
},
{
"tool": "download_submissions",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "download_discussion_entries",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
}
],
"surfaceDigest": "078a29680bd5ed9d84aaea80b6fd64d8b7f091687d74f5dbed979716d556f9d3",
"stats": {
"tools": 134,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 1,
"high": 0,
"medium": 1,
"low": 2,
"info": 0
}
}
}