MCP stdio ShellGuard

Defense-in-depth for MCP stdio servers: shell-injection guard, AST audit CLI, RCE blocking.

Connector by studiomeyer.io · Domain verified by the MCP Registry

IndexedMITLocal (stdio)

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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/studiomeyer-io-stdio-shellguard

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Defense-in-depth for MCP stdio servers: shell-injection guard, AST audit CLI, RCE blocking.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 5 read · 1 write · 2 delete
Secrets: None asked for
Install scripts: Not scanned yet
Runs as: Node.js package

Tools by what they do 8

Read from the source code; the running server may list different tools.

Read 5 · Look things up without changing anything.

audit_report
audit_source
replay_check
sandbox_status
trust_tier

Write 1 · Create, change, send or run things.

register_allowlist

Delete 2 · Delete, drop, revoke or wipe things.

guard_exec
guard_spawn

Tools (8)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

audit_reportread-only
Format an AuditScanResult as markdown / json / sarif. Pure pass-through transformer.
audit_sourceread-only
Scan a TypeScript / JavaScript path for unsanitised child_process.exec / spawn / execFile calls and other shell-injection anti-patterns. Returns AuditFinding[] + summary.
guard_execcan change or delete data
Defended replacement for child_process.exec. Forces an args[] vector, runs through allowlist + sandbox + replay window. Returns stdout/stderr/exitCode.
guard_spawncan change or delete data
Defended replacement for child_process.spawn. Returns stdout/stderr SHA-256 hashes instead of full bodies. Rejects shell:true.
register_allowlist
Register a tool name with its allowed executable + args regex patterns. Without registration the default-deny applies and guard_exec/guard_spawn refuse to run.
replay_checkread-only
Compute the canonical SHA-256 hash for an invocation and report whether the same hash is already in the LRU sliding window.
sandbox_statusread-only
Report the active sandbox profile + concrete limits (timeout, byte caps, fd budget, cgroup-v2 active flag) for a registered tool.
trust_tierread-only
Derive the LOW / MEDIUM / HIGH / CRITICAL trust tier for a registered tool plus improvement hints to lift it.

Signals

Stars: 0
Forks: 0
Open issues: 0
Last commit: Oct 21, 2026 (10 days ago)
Last release: Aug 19, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.studiomeyer/stdio-shellguard
Version: 0.1.2
Auth: No auth
Packages: npm mcp-stdio-shellguard
License: MIT
Repository: github.com/studiomeyer-io/mcp-stdio-shellguard
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

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Cite this page

MCP stdio ShellGuard. Agent Mart. https://agentmart.dev/connectors/studiomeyer-io-stdio-shellguard (last updated 2026-10-24)