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Intercept
What is Intercept? AI agents spend money autonomously — calling paid APIs, paying other agents, executing transactions. But they can be tricked by prompt injection, phishing endpoints, and honeypot tokens. Intercept is a security layer that sits between the agent and the blockchain. Before any payment is signed, the agent asks Intercept: "Is this safe?" Intercept runs 6-layer security analysis and returns allow, deny, or ask_user — in under 500ms. How It Works 1. User creates a Session with spending rules (budget, allowed merchants, time limits) 2. Gets a Session Key — one line of config for their agent 3. Agent encounters a payment → calls Intercept's authorize API 4. Intercept checks: prompt injection → LLM analysis → address blacklist → behavioral anomaly → contract/token safety → session policy 5. Returns decision with reasoning 6. Agent acts accordingly — Intercept never touches private keys Why Arc? Securing a $0.01 API payment shouldn't cost $2 in gas. Arc makes it viable to: - Record every security decision on-chain ($0.001/record) - Execute x402 micro-payments for agent commerce - Run continuous protection with 30+ transactions per session
26 Apr 2026
