HOW IT WORKS PROTOCOL ASK FACET X / TWITTER
Agent Security Protocol

SECURE EVERY AGENT.
ON EVERY WALLET.
EVERY CHAIN.

Agents are getting wallets. But security is fragmented — locked inside Coinbase, Ledger, or Safe's ecosystem. Facet is the open security protocol that protects any agent, on any wallet, on any chain.

Ask Facet

HAVE QUESTIONS?
ASK THE AI.

FACET AI

Online

WHAT CAN I HELP WITH?

Ask about MPC co-signing, spending policies, supported wallets, or how Facet compares to Coinbase.

See It In Action

ANY WALLET. ANY CHAIN.
ONE COMMAND.

facet-protocol
agent → facet.connect --wallet metamask --chain arbitrum
✓ Secured · Wallet: 0x7a2f...c4e1 · Chain: Arbitrum
agent → facet.set_policy --max-tx 500 --daily-limit 2000
✓ Policy active · Max per tx: $500 · Daily: $2,000
agent → facet.simulate swap 1000 USDC → ETH
Expected: 0.31 ETH · Gas: $0.40 · Risk: LOW
agent → facet.execute
✓ Policy passed · MPC co-signed · tx: 0x3b8f...d901
The Threat

$2.2 BILLION STOLEN IN 2024.
AGENTS MAKE IT WORSE.

Private key compromises account for 44% of all crypto theft. Now agents are holding keys and executing transactions autonomously. The attack surface is exploding — and security is siloed.

⚠

AGENTS HOLD RAW KEYS

Most agent wallets store a private key on disk. One prompt injection, one compromised dependency, one leaked env variable — wallet drained. No recovery on-chain.

◆

MPC KEY SHARDING

Facet splits signing authority using Multi-Party Computation. Agent holds one shard, Facet protocol holds another. The full key never exists on any single device.

🔓

SILOED SECURITY

Coinbase secures Coinbase wallets. Ledger secures Ledger wallets. Safe secures Safe wallets. Your agent works across ecosystems — security breaks at every boundary.

🌐

ONE LAYER. EVERYWHERE.

Facet wraps any wallet on any chain with the same MPC protection, the same policy engine, the same audit trail. Security follows your agent across ecosystems.

💸

NO SPENDING CONTROLS

Give an agent a wallet, it can spend everything. Most frameworks have no concept of budgets, limits, or transaction policies. The only constraint is the prompt.

🛡

PROGRAMMABLE GUARDRAILS

Per-transaction caps. Daily limits. Chain restrictions. Contract whitelists. Over limit — block or route to human approval. You define the rules, Facet enforces at the signing layer.

How It Works

FOUR LAYERS OF SECURITY.
ANY STACK.

1

CONNECT

Agent connects Facet to any existing wallet. No migration, no ecosystem switch. MetaMask, Coinbase, Safe, Ledger — all supported.

2

SHARD

MPC splits signing authority. Agent proposes transactions but can't sign alone. Facet co-signs only if the transaction passes your policies.

3

ENFORCE

Every transaction is simulated, risk-scored, and checked against your rules. In-policy executes automatically. Over-limit blocks or routes to human approval.

4

AUDIT

Full history across every chain. What your agent spent, where, when, and why it was approved. Revoke access in one call.

Protocol Tools

EIGHT TOOLS.
ONE SECURITY STANDARD.

An open protocol any agent framework can adopt. Intent-based, chain-agnostic, secure by default. Read operations run freely. Write operations go through MPC co-signing and policy enforcement.

get_portfolio
Full wallet state across any connected chain. Balances, DeFi positions, staking, LP exposure.
Read · Any chain · No signing
get_market_data
Prices, liquidity, yield opportunities. Aggregated cross-chain from multiple sources.
Read · Any chain · No signing
simulate_action
Dry-run any action before real money moves. Expected outcome, gas, slippage, risk score.
Read · Required before execution
evaluate_risk
Check against your spending policies. Returns pass/fail, risk score, and whether human approval is needed.
Read · Required before execution
execute_action
MPC co-signed execution. Only fires if simulation passed, risk evaluated, and policy allows.
Write · MPC co-signed · Policy-enforced
swap
Token-to-token via best route on any supported chain. Slippage limits enforced by policy.
Write · MPC co-signed · Policy-enforced
bridge
Cross-chain transfer. Routes best available bridge — not locked to one provider.
Write · MPC co-signed · Policy-enforced
optimize_portfolio
Auto-rebalance across chains and protocols. Risk profile configurable from conservative to aggressive.
Write · MPC co-signed · Policy-enforced

AGENTS ARE GETTING WALLETS.
WHO SECURES THEM?

The open security protocol for any agent, any wallet, any chain. No lock-in.