🧬 MCP Core

MCP Core is the reference implementation of the Model Context Protocol — a lightweight, zk- and chain-friendly system for verifiable, composable model context commitments onchain.

It glues together three simple artifacts:

• 🧠 Model Hash — SHA-256 / Blake3 digest of model weights or prompt
• 📄 Context Manifest — JSON metadata (datasets, hyperparameters, license, etc.)
• 🔐 Proof Stub — zk-friendly cryptographic commitment (Poseidon, Keccak, Rescue) Built for composability, speed, and low-gas operations across EVM and non-EVM chains.

🌐 What is MCP?

The Model Context Protocol (MCP) defines a minimal, verifiable, and gas-efficient standard for binding AI model metadata to onchain identities.

It enables features like:

• Onchain agent memory
• Auditable model registries
• Context-linked NFTs
• DAO explainers & context badges

🔧 Contracts Overview

It allows users to:

• putContext(bytes32 modelHash, bytes32 contextCID)
• getContext(address agent) → (modelHash, contextCID)

The contract is chain-agnostic but optimized for low gas on EVM via hash precompiles.

✍️ Example: putContext()

const modelHash = ethers.utils.sha256("gpt-weights-v1");
const contextCID = ethers.utils.sha256("manifest.json");

await contextStore.putContext(modelHash, contextCID);

All context is stored onchain as hash commitments — raw data remains offchain and private.

🧠 MCP Use Cases

Explore dApps built with MCP:

• Contextual GPT Agent w/ Wallet Memory
• DAO Proposal Explainer
• AI Chat History NFT
• Mintable AI Agents
• Verifiable Context Badges

See roadmap → https://z1labs.ai/roadmap