Reddit — 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": "@prmichaelsen/reddit-mcp",
"source": {
"kind": "package",
"origin": "@prmichaelsen/reddit-mcp"
},
"server": {
"name": "@prmichaelsen/reddit-mcp"
}
},
"grade": "A",
"score": {
"score": 92,
"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": "none",
"label": "publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read",
"appliedPenalty": 2
},
{
"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 (88 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-001",
"title": "Dynamic code execution in server code (dist/factory.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/factory.js:2942`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. 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/factory.js"
},
"evidence": "const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); const v",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-001",
"file": "dist/factory.js",
"line": 2942,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-001",
"title": "Dynamic code execution in server code (dist/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/index.js:2942`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. 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/index.js"
},
"evidence": "const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); const v",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-001",
"file": "dist/index.js",
"line": 2942,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-001",
"title": "Dynamic code execution in server code (dist/server.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/server.js:2942`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. 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/server.js"
},
"evidence": "const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); const v",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-001",
"file": "dist/server.js",
"line": 2942,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (esbuild.build.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`esbuild.build.js:2`): 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": "esbuild.build.js"
},
"evidence": "port { execSync } from \"child_process\"; await build({ entryPoints: [\"src/index.ts\", \"src/server.ts\", \"src/factory.ts\"",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "esbuild.build.js",
"line": 2,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-003",
"title": "Hardcoded egress to an external endpoint (dist/index.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`dist/index.js:31711`): 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/index.js"
},
"evidence": "const response = await fetch( \"https://www.reddit.com/api/v1/access_token\", { method: \"POST\",",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "dist/index.js",
"line": 31711,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-003",
"title": "Hardcoded egress to an external endpoint (src/auth/oauth.ts)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`src/auth/oauth.ts:27`): 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": "src/auth/oauth.ts"
},
"evidence": "const response = await fetch( \"https://www.reddit.com/api/v1/access_token\", { method: \"POST\",",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "src/auth/oauth.ts",
"line": 27,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SUP-011",
"title": "Package declares no source repository",
"category": "supply-chain",
"severity": "info",
"confidence": "strong",
"description": "\"@prmichaelsen/reddit-mcp\" declares no repository URL, so its published artifact cannot be compared against reviewable source.",
"remediation": "Prefer packages that link to public, reviewable source.",
"location": {
"kind": "package",
"name": "@prmichaelsen/reddit-mcp"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "reddit_me",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_me_karma",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_me_prefs",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_me_prefs_update",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_me_trophies",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_me_friends",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_me_blocked",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_comment",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_more_children",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_link_flair",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_flair",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_select_flair",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_listings_best",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_listings_hot",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_listings_new",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_listings_rising",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_listings_top",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_listings_controversial",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_comments_thread",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_duplicates",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_info",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_inbox",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unread",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_sent",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_compose",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_read_message",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"read_message\""
]
}
},
{
"tool": "reddit_unread_message",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"read_message\""
]
}
},
{
"tool": "reddit_del_msg",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_approve",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_remove",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_distinguish",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_ignore_reports",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unignore_reports",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_lock",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unlock",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_modqueue",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_reports",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_spam",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_edited",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_modlog",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_moderators",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_contributors",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_banned",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_muted",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_multi_mine",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_multi_get",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_multi_create",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_multi_update",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_multi_delete",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_multi_add_sub",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_multi_remove_sub",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_submit",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_edit",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_delete",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_hide",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unhide",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_mark_nsfw",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unmark_nsfw",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_spoiler",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unspoiler",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_search",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_search_subreddit",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_subreddit_about",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_subreddit_rules",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_subscribe",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unsubscribe",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_subreddits_mine",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_subreddits_popular",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_subreddits_new",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_subreddits_search",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_about",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_overview",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_submitted",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_comments",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_saved",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_upvoted",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_downvoted",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_user_trophies",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_block_user",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_vote",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_save",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_unsave",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_report",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_wiki_page",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_wiki_edit",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_wiki_pages",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_wiki_revisions",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_wiki_page_revisions",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "ec162f5c1af8c802d5df95a6792796e8f9d4476e2fd086f28f849f2b5decda0f",
"stats": {
"tools": 88,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 4,
"medium": 2,
"low": 0,
"info": 1
}
}
}