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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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No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

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 (7 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 Registrygithub-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)