Cloud Fs MCP Server
@nogoo9/mcp-server-cloud-fs
npm
v0.7.0
Source verified
Published by nogoo9 — publish provenance cryptographically ties this package to that repository. That is proof of origin, not an official vendor package.
High-performance MCP server and library providing a cloud-native replacement for mcp-server-filesystem. Supports S3, Azure Blob, GCS, and SQLite with VFS cache coherence.
The grade answers one question — how safe is this server for you to adopt — so it is computed in two auditable stages. Nothing below is an opinion or an LLM's guess; every line is a real term the deterministic engine applied, and the same input always yields the same number.
1. Threat score — 100 − 0 = 100. What the published surface and source actually contain:
The deterministic scan raised no scored threat in the surface it inspected — the threat score stayed at 100. Capability observations and advisory notes are recorded but never lower it.
2. Client adoption risk — 100 − 6 = 94. Three small, subtract-only factors that reflect your risk in adopting it — a clean scan proves less on a powerful, unverified or barely-inspectable package, so the grade says so plainly:
| Points | Adoption-risk factor |
|---|---|
| −6 | capability blast radius (high) — client exposure if the model is manipulated |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind a deduction.
Findings 19
high Sensitive-source and external-sink co-existMTC-FLOW-004
Tools that read sensitive data ([read_file_range, read_file, read_file_chunk]) and tools that can send data out ([shell]) are exposed together. An agent can move private data to the sink.
Evidence: sources [read_file_range, read_file, read_file_chunk] → sinks [shell]
Fix: Keep secret-reading and egress capabilities on separate, separately-approved servers.
Location: flow read_file_range → shell
high Tool "shell" exposes command/code executionMTC-CAP-001
Tool "shell" appears to run shell commands or evaluate code (keyword "shell" in tool name, parameter "command"). Arbitrary execution driven by model input is one of the most dangerous MCP capabilities; combined with any untrusted input it becomes RCE.
Fix: Sandbox execution, allowlist commands/arguments, and never pass model output to a shell unescaped.
Location: tool shell
high Shell/command execution in server code (src/providers/sqlite.ts)MTC-SRC-002
In the server's implementation (`src/providers/sqlite.ts:25`): 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.
Evidence: re(sql: string): Stmt; exec(sql: string): void; close(): void; } /** * Open a SQLite database using the best availab
Fix: 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: server src/providers/sqlite.ts
medium Tool "delete_file" can modify the filesystemMTC-CAP-002
Tool "delete_file" can write, overwrite or delete files (keyword "delete_file" in tool name). Verify it is scoped to a safe directory.
Fix: Constrain file operations to an explicit, non-sensitive root; reject path traversal.
Location: tool delete_file
medium Tool "move_file" can modify the filesystemMTC-CAP-002
Tool "move_file" can write, overwrite or delete files (keyword "move_file" in tool name). Verify it is scoped to a safe directory.
Fix: Constrain file operations to an explicit, non-sensitive root; reject path traversal.
Location: tool move_file
medium Tool "write_file" can modify the filesystemMTC-CAP-002
Tool "write_file" can write, overwrite or delete files (keyword "write_file" in tool name). Verify it is scoped to a safe directory.
Fix: Constrain file operations to an explicit, non-sensitive root; reject path traversal.
Location: tool write_file
medium Tool "edit_file" can modify the filesystemMTC-CAP-002
Tool "edit_file" can write, overwrite or delete files (keyword "edit_file" in tool name). Verify it is scoped to a safe directory.
Fix: Constrain file operations to an explicit, non-sensitive root; reject path traversal.
Location: tool edit_file
medium Unconstrained command parameter "command" on "shell"MTC-CAP-006
Tool "shell" takes a command-shaped parameter "command" with no enum/pattern constraint. Free-form, model- or attacker-controlled arguments reaching a shell is the command-injection precondition.
Fix: Constrain the parameter (enum/pattern), or build the command from a fixed template with escaped args.
Location: tool shell · inputSchema.properties.command
low Mutating tool "delete_file" declares no destructiveHintMTC-CAP-005
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.
Fix: Declare accurate annotations, and gate destructive tools on user confirmation regardless.
Location: tool delete_file
low Mutating tool "move_file" declares no destructiveHintMTC-CAP-005
Tool "move_file" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.
Fix: Declare accurate annotations, and gate destructive tools on user confirmation regardless.
Location: tool move_file
low Mutating tool "shell" declares no destructiveHintMTC-CAP-005
Tool "shell" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.
Fix: Declare accurate annotations, and gate destructive tools on user confirmation regardless.
Location: tool shell
low Mutating tool "write_file" declares no destructiveHintMTC-CAP-005
Tool "write_file" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.
Fix: Declare accurate annotations, and gate destructive tools on user confirmation regardless.
Location: tool write_file
low Mutating tool "edit_file" declares no destructiveHintMTC-CAP-005
Tool "edit_file" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.
Fix: Declare accurate annotations, and gate destructive tools on user confirmation regardless.
Location: tool edit_file
low Unconstrained path parameter "path" on "read_file_range"MTC-CAP-008
Tool "read_file_range" takes a path parameter "path" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.
Fix: Resolve and verify the path stays within an allowed root; reject traversal sequences.
Location: tool read_file_range · inputSchema.properties.path
low Unconstrained path parameter "path" on "delete_file"MTC-CAP-008
Tool "delete_file" takes a path parameter "path" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.
Fix: Resolve and verify the path stays within an allowed root; reject traversal sequences.
Location: tool delete_file · inputSchema.properties.path
low Unconstrained path parameter "path" on "read_file"MTC-CAP-008
Tool "read_file" takes a path parameter "path" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.
Fix: Resolve and verify the path stays within an allowed root; reject traversal sequences.
Location: tool read_file · inputSchema.properties.path
low Unconstrained path parameter "path" on "read_file_chunk"MTC-CAP-008
Tool "read_file_chunk" takes a path parameter "path" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.
Fix: Resolve and verify the path stays within an allowed root; reject traversal sequences.
Location: tool read_file_chunk · inputSchema.properties.path
low Unconstrained path parameter "path" on "write_file"MTC-CAP-008
Tool "write_file" takes a path parameter "path" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.
Fix: Resolve and verify the path stays within an allowed root; reject traversal sequences.
Location: tool write_file · inputSchema.properties.path
low Unconstrained path parameter "path" on "edit_file"MTC-CAP-008
Tool "edit_file" takes a path parameter "path" with no constraint. Without a canonicalize-and-contain check (not visible statically), this permits ../ traversal outside the intended root.
Fix: Resolve and verify the path stays within an allowed root; reject traversal sequences.
Location: tool edit_file · inputSchema.properties.path
Tools 30
Each tool and what it can reach — statically extracted from the published source.
delete_filewrites filesedit_filewrites filesmove_filewrites filesread_filereads sensitive dataread_file_chunkreads sensitive dataread_file_rangereads sensitive datashellruns code / shellwrite_filewrites filescopy_fileno sensitive capabilitycreate_directoryno sensitive capability
Show 20 more tools ↓
directory_treeno sensitive capabilityget_file_infono sensitive capabilityget_file_schemano sensitive capabilityget_object_metadatano sensitive capabilityget_presigned_urlno sensitive capabilitygrep_fileno sensitive capabilitygrep_filesno sensitive capabilitylist_allowed_directoriesno sensitive capabilitylist_directoryno sensitive capabilitylist_directory_with_sizesno sensitive capabilitylist_versionsno sensitive capabilitypatch_fileno sensitive capabilityread_media_fileno sensitive capabilityread_multiple_filesno sensitive capabilityread_text_fileno sensitive capabilityrestore_versionno sensitive capabilitysearch_by_tagno sensitive capabilitysearch_filesno sensitive capabilityset_object_tagsno sensitive capabilitysummarize_fileno sensitive capability
Toxic flows 1
Cross-tool combinations that form a data-exfiltration primitive (untrusted input → sensitive source → external sink).
What this scan could not see
- Tools were statically extracted from the published source (30 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>".
Versions 1
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v0.7.0 latest |
A 94/100 | 19 | 1.13.0 | 2026-09-09 |
Embed this score
Show this server's live Trust Score in your README, docs or website. The badge is served straight from the registry and updates automatically after every rescan — no API key needed. It links back to this page, so anyone who sees the grade can also read the findings behind it instead of taking a number on faith.
Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
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