Shellgate (matthiastjong/shellgate) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.
A secure gateway that lets AI agents interact with APIs and SSH servers via scoped tokens, with credential injection, human-in-the-loop for dangerous commands, and MCP integration for tool access.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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matthiastjong
Source: Glama
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
Drizzle ORM has SQL injection via improperly escaped SQL identifiers
@sveltejs/adapter-node has a BODY_SIZE_LIMIT bypass
Vite Vulnerable to Arbitrary File Read via Vite Dev Server WebSocket
Vite: `server.fs.deny` bypassed with queries
CDP_URLSHELLGATE_TOKENSHELLGATE_URLVAULT_ENCRYPTION_KEYDATABASE_URLTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
31/31 tools missing one or more hints — blind_fill (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); blind_type (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); bootstrap (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +28 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
27/31 tool handlers declare input schemas (87%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 2/31 tool handlers wrap calls in try/catch (6%)
Wrap each tool handler body in try/catch and return a structured error response.
Tool test coverage
11/31 tools referenced in tests (35%)
Write tests that reference each tool by name so every tool has at least one test.
Tests pass
npm test failed — tests do not pass
Make sure npm test runs cleanly. Common cause: missing build step or missing env vars.
Shell command execution
2 child_process calls — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Secrets stay with their owner
2 secret/sensitive values flow into network calls (SHELLGATE_TOKEN → dynamic, SHELLGATE_TOKEN → dynamic)
Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.
Production dependencies are patched
0 critical, 1 high severity in production deps — drizzle-orm@0.45.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
4 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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