# 8gentz > Sovereign Agentic Gateway Proxy (SAGP) — protocol-agnostic ingress for autonomous AI agent swarms. 8gentz is infrastructure for AI agent orchestration. It provides a single sovereign gateway that routes, verifies, and audits AI agent traffic across 8 protocols: MCP, A2A, ANP, ACP, OpenAI, UCP, MPP, and Nostr. ## What is 8gentz? 8gentz builds the infrastructure layer between AI agents and the services they consume. The Sovereign Agentic Gateway Proxy (SAGP) handles: - **Protocol translation** — one gateway, 8 protocols (MCP, A2A, ANP, ACP, OpenAI, UCP, MPP, Nostr) - **Authentication** — x402 cryptographic wallet micropayments; no API keys, no accounts - **Post-quantum security** — NIST FIPS 203 (ML-KEM), 204 (ML-DSA), 205 (SLH-DSA), 206 (FN-DSA) - **Immutable audit** — every agent call committed to Autheo onchain audit log with zk-STARK privacy - **Agent identity** — DID-based identity (did:web:8gentz.io), EIP-4361 wallet compatibility ## How to connect your AI agent See /auth.md for complete x402 payment instructions. Quick summary: 1. Send any request to `https://gateway.8gentz.io/v1/tools` 2. Receive HTTP 402 with payment details (µUSDC on Base eip155:8453) 3. Sign the micropayment from your DID-compatible wallet 4. Retry — gateway verifies, executes, and audits No pre-registration. No API keys. No subscriptions. ## Protocol endpoints | Protocol | Endpoint | |---|---| | MCP (Anthropic) | https://mcp.8gentz.io/v1/mcp/rpc | | A2A (Google) | https://a2a.8gentz.io/v1/a2a/tasks/send | | ANP | https://anp.8gentz.io/.well-known/did.json | | ACP (Coinbase) | https://acp.8gentz.io/v1/acp/send | | OpenAI | https://openai.8gentz.io/v1/openai/tools | | UCP | https://ucp.8gentz.io/v1/ucp/service/:tool | | MPP | https://mpp.8gentz.io/v1/mpp/channel/open | | Nostr | https://nostr.8gentz.io/v1/nostr/ws | ## Pricing (µUSDC) All costs in micro-USDC (µUSDC). 1 USDC = 1,000,000 µUSDC. | Operation | Cost | |---|---| | Read (per KB) | 0.5 µUSDC | | Write (per KB) | 2 µUSDC | | Atomic Rollback | 0 µUSDC | | Light Compute (per 100ms CPU) | 10 µUSDC | | Heavy Compute (per 100ms GPU) | 150 µUSDC | | Vector Search (per query) | 5 µUSDC | | Protocol Routing (per hop) | 1 µUSDC | | Audit Proof (zk-STARK) | 25 µUSDC | ## Machine-readable discovery - MCP Server Card: https://8gentz.io/.well-known/mcp/server-card.json - Agent Card (A2A): https://8gentz.io/.well-known/agent.json - DID Document: https://8gentz.io/.well-known/did.json - Agent Skills: https://8gentz.io/.well-known/agent-skills/index.json - API Catalog: https://8gentz.io/.well-known/api-catalog - OpenAPI Spec: https://8gentz.io/.well-known/openapi.yaml - ChatGPT Plugin: https://8gentz.io/.well-known/ai-plugin.json - Auth Instructions: https://8gentz.io/auth.md ## Key pages - Home: https://8gentz.io/ - Blog: https://8gentz.io/blog - Docs: https://8gentz.io/docs - Protocols: https://8gentz.io/protocols/mcp - Legal: https://8gentz.io/legal ## Optional - Full content for LLM indexing: https://8gentz.io/llms-full.txt