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MCP servers tagged fail-closed
10 live MCP servers tagged "fail-closed", ranked by trust score. Tags come from package metadata and repository topics, so this list covers servers across every category that work with fail-closed.
Vetto
Daemon-less OS security boundary & sandbox for AI coding agents (Codex, Claude Code, Cursor, Aider)
Verdict Core
Control plane for AI coding agents: decides which models may run each task, recovers from rate limits and timeouts, sends work to a separate reviewer model, and writes verifiable…
Zombie Killer Tray
Safe Windows tray for conservative cleanup of orphaned MCP and language-server processes
Sealwall
Zero-dependency firewall and tamper-evident audit log proxy for Model Context Protocol (MCP) AI agents.
Cornercheck
Fail-closed fighter-clearance Slack agent: cross-jurisdiction medical suspensions, ARP return windows, tamper-evident audit ledger. Slack Agent Builder Challenge (Agent for Good).
Gate.cat
Block irreversible AI-agent actions before they run — deterministic, fail-closed action veto for Claude Code, Codex, Cursor, and other tool-using agents.
AegisAgent
Zero-trust API firewall and security integrity layer for autonomous AI agents & Model Context Protocol (MCP) tool execution. Secure, TOCTOU-proof, fail-closed.
Agent Eval Gate
MCP eval-gate server: an agent's only path to moving money runs a fail-closed, version-pinned OFAC screen-before-transfer control first. Stdlib-only, zero-install, polarity-proven.
Sqlgate
A deterministic, fail-closed write gate for LLM-generated SQL, exposed over MCP. The model can't talk its way past it.
Holdout Governance
No description published.