MCPCustoms is the customs checkpoint for MCP tool calls: a zero-dependency TypeScript runtime semantic firewall that inspects every Massive Intelligence (IM) agent tool call before execution. Detects tool poisoning, command/SQL/prompt injection, path traversal, and capability overreach; verifies signed Ed25519 publishers; fail-closed by default.
nodejs typescript mcp ed25519 zero-dependency ai-agents command-injection audit-trail path-traversal supply-chain-security publisher-verification prompt-injection llm-security agent-security mcp-security tool-poisoning hermes-agent runtime-firewall tool-inspection capability-negotiation
-
Updated
Aug 1, 2026 - TypeScript