Harmony — 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": "@yujiamei/harmony-mcp",
"source": {
"kind": "package",
"origin": "@yujiamei/harmony-mcp"
},
"server": {
"name": "@yujiamei/harmony-mcp"
}
},
"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": [
"can send data / act on an external service",
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"can execute shell commands or code"
],
"tags": [
"external-sink",
"sensitive-source",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (36 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-004",
"title": "Sensitive-source and external-sink co-exist",
"category": "exfiltration",
"severity": "high",
"confidence": "strong",
"description": "Tools that read sensitive data ([wechat_diagnose]) and tools that can send data out ([wechat_open_project, wechat_init_project]) are exposed together. An agent can move private data to the sink.",
"remediation": "Keep secret-reading and egress capabilities on separate, separately-approved servers.",
"location": {
"kind": "flow",
"name": "wechat_diagnose → wechat_open_project"
},
"evidence": "sources [wechat_diagnose] → sinks [wechat_open_project, wechat_init_project]",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"references": [],
"data": {
"sources": [
"wechat_diagnose"
],
"sinks": [
"wechat_open_project",
"wechat_init_project"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/tools/harmony/cli.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/tools/harmony/cli.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/tools/harmony/cli.js"
},
"evidence": "/ import { exec } from \"child_process\"; import { promisify } from \"util\"; import { detectHdcPath } from \"../../utils/pro",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/tools/harmony/cli.js",
"line": 8,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/tools/wechat/cli.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/tools/wechat/cli.js:1`): 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/tools/wechat/cli.js"
},
"evidence": "import { exec } from \"child_process\"; import { promisify } from \"util\"; import { detectWechatCliPath, isWechatToolRunn",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/tools/wechat/cli.js",
"line": 1,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/utils/process.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/utils/process.js:3`): 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/utils/process.js"
},
"evidence": "; import { exec } from \"child_process\"; import { promisify } from \"util\"; import { join } from \"path\"; import { homedir",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/utils/process.js",
"line": 3,
"nonRuntime": false
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "high",
"confidence": "strong",
"untrustedInput": [],
"sensitiveSource": [
"wechat_diagnose"
],
"externalSink": [
"wechat_open_project",
"wechat_init_project"
],
"selfContained": false,
"path": [
"wechat_diagnose",
"wechat_init_project"
],
"pathWired": false,
"description": "A sensitive-source → external-sink chain exists: wechat_diagnose → wechat_init_project."
}
],
"capabilities": [
{
"tool": "harmony_list_devices",
"tags": [],
"reasons": {}
},
{
"tool": "harmony_install",
"tags": [],
"reasons": {}
},
{
"tool": "harmony_uninstall",
"tags": [],
"reasons": {}
},
{
"tool": "harmony_start",
"tags": [],
"reasons": {}
},
{
"tool": "harmony_log",
"tags": [],
"reasons": {}
},
{
"tool": "harmony_file_push",
"tags": [],
"reasons": {}
},
{
"tool": "harmony_file_pull",
"tags": [],
"reasons": {}
},
{
"tool": "harmony_ready_check",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_cli_login",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_preview",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_auto_preview",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_automation_start",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_upload",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_build_npm",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_open_project",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"open_pr\""
]
}
},
{
"tool": "wechat_close_project",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_cache_clean",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_reset_fileutils",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_project_info",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_package_size",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_subpackage_suggest",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_page_list",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_config_validate",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_dependency_check",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_audit",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_compliance_check",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_ci_ready_check",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_ci_preview",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_ci_build_npm",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_ci_sourcemap",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_self_test",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_ready_check",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_init_project",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"open_pr\""
]
}
},
{
"tool": "wechat_runtime_diagnose",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_publish",
"tags": [],
"reasons": {}
},
{
"tool": "wechat_diagnose",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"read_file\""
]
}
}
],
"surfaceDigest": "3541223c50d4cc18d668ee9307b7c64e85be5e9a453401addd4fd32ba4f8a5e2",
"stats": {
"tools": 36,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 4,
"medium": 0,
"low": 0,
"info": 0
}
}
}