Satgate MCP Server

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What you get

SatGate is an Economic Firewall for AI agent requests. Drop it in front of your APIs and MCP tools to enforce scoped authority, budgets, paid-rail context, and Evidence Pack receipts before agents act.

• 🛡️ Capability Tokens (Macaroons) — Cryptographic credentials with built-in caveats, delegation, and next-request revocation. Not API keys — tokens that agents can safely sub-delegate
• 🎯 MCP-Aware — Parses MCP JSON-RPC tool calls. Know that Agent X spent $47 on search_database and $12 on send_email — not just "1,000 requests."
• 💰 Budget Enforcement — Hard stops per agent, team, or API. When the budget hits zero, requests are blocked. Not logged. Not alerted. Blocked
• ⚡ Paid-Rail Governance — Govern paid API access across L402, x402, API-key billing, and enterprise ledgers without making any one rail the control plane
• 🔒 Default-Deny — All routes require valid credentials unless explicitly public. Zero Trust by design
• 🚀 <50ms Overhead — Lightweight Go proxy. Adds governance without adding latency

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Maintainer setup documentation.