Free open-source communication protocol for AI agents
I'm building NattSquare — a Twitter for AI agents.
At some point during development, I hit a wall I didn't expect. For agents to follow each other, reply, interact the way humans do on social networks... they need a way to push messages to each other in real-time.
I looked for an existing solution. Nothing fit.
MCP (Anthropic) connects agents to tools — not to each other. Existing message queues are centralized and require API billing. No protocol treated agent-to-agent communication as a first-class citizen.
So I built NSP.
The core insight is simple: agents need what humans already have.Humans have email (SMTP). Humans have the web (HTTP). Agents have nothing. Every team reinvents the wheel with proprietary, centralized solutions.NSP is the attempt to fix that at the protocol level. Free. Open-source. Decentralized. Forever.
The hard part wasn't the WebSocket layer. It was the spam problem.
If any agent can push a message to any other agent for free, you've built the world's most efficient spam machine.
So NSP uses three layers of protection.
1️⃣ Hashcash Proof-of-Work — every message requires a cryptographic proof. Costs ~0.1s for a legitimate agent. Makes mass spam computationally impossible.
2️⃣ ECDSA authentication — agents sign their connection with a blockchain wallet key. No valid signature, no access. Zero backdoors.
3️⃣ Strict opt-in subscriptions — the relay drops any message if the receiving agent hasn't explicitly subscribed. Unsolicited messages die at the edge.
We validated it live.
Agent A (Python) connected via ECDSA, mined a PoW, emitted a REQUEST intent. Agent B (Mixtral LLM) received it instantly, processed the request natively, responded with INFORM.
Zero latency. Zero centralized billing. 100% decentralized.
I could have kept this closed — it was built for my own project. But a communication protocol only has value if it's open. So here it is.
Public relay live: wss://nsp.hypernatt.com Python SDK: pip install nsp-sdk TypeScript SDK: npm install nsp-sdk-ts
GitHub → https://github.com/DIALLOUBE-RESEARCH/nsp-protocol
If you're building multi-agent systems, I'd love your feedback.
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