In-depth architectural comparison of the Sicarius Guard and Emilia Protocol MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Sicarius Guard
Security · Local stdio
Quality: 55/100 (Good) | Auth: No auth required
Emilia Protocol
Security · Local stdio
Quality: 71/100 (Great) | Auth: No auth required
Verdict Summary: Choose Sicarius Guard if you need specialized Security tools running via a local process. Choose Emilia Protocol if your workspace requires Security integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose Sicarius Guard when:
You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Freemium).
You have access to required keys: HELIUS_RPC_URL, BIRDEYE_API_KEY.
Solana token safety oracle for AI agents and trading bots. Byte-level SPL mint analysis, honeypot detection, freeze/mint authority checks, Birdeye market enrichment, and composite risk scoring. Deployed on Google Cloud Run.
Human sign-off + trust receipts for AI agents: requires a named human's approval before an irreversible action (payment release, record change, deploy), then mints an offline-verifiable Ed25519 Trust Receipt. Also exposes trust profiles, receipt verification, disputes, and delegation. Apache-2.0; policy engine formally verified. Install: npx -y @emilia-protocol/mcp-server.
Category & Scope
Tools & Capabilities Breakdown
Sicarius Guard Tools (11)
check_token_safety
5-layer on-chain rug pull, honeypot, and holder analysis
check_honeypot
Jupiter DEX sell simulation — zero cost, quote-only
check_holder_concentration
Top holder distribution analysis with concentration flags
Sicarius Guard is categorized under Security and uses a local stdio subprocess. In contrast, Emilia Protocol belongs to Security using local stdio subprocess. Select Sicarius Guard when you need capabilities focused on security and Emilia Protocol when you require tools for security.
Parallel 12-layer scan of up to 10 tokens per call
Emilia Protocol Tools (3)
ep_guard_action
Request authorization before an irreversible action: payments, wire transfers, fund releases, deletions, record or account changes, or sending messages with real-world effect. Submits the exact action for policy evaluation and human authorization. This MCP tool does not itself sit at the executor choke point: even after approval, the executor MUST match the returned action_hash and atomically consume the receipt before effect. If BLOCKED, poll ep_check_signoff with the receipt_id.
ep_check_signoff
Poll a pending authorization after ep_guard_action returns BLOCKED. Pass the receipt_id. Returns PENDING, APPROVED_PENDING_CONSUME, CONSUMED, or DENIED. Approval alone is not permission to execute: the executor must match action_hash and atomically consume the receipt at its own choke point.
ep_verify_receipt
Ask the configured EMILIA service to verify a stored trust receipt and report its hash and anchor status. Read-only, but not an offline verifier: the result is the service response for the supplied receipt_id.