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snap-mcp-server

v0.1.2

Published

MCP server for SNAP — private agent-to-agent payments on Solana using zero-knowledge proofs. Exposes deposit, withdraw, list pools, and fee estimation as MCP tools.

Vulnerabilities

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Links

Git

Maintainers

agentzenyagentzeny

Keywords

mcpmodel-context-protocolsolanaprivacyzero-knowledge-proofsai-agentspaymentsgroth16snap

Readme

snap-mcp-server

MCP server for SNAP — private agent-to-agent payments on Solana using zero-knowledge proofs.

Exposes SNAP operations as Model Context Protocol tools so any MCP-compatible AI agent (Claude, Cursor, Windsurf, etc.) can make private payments on Solana mainnet.

Run

npx snap-mcp-server

Or add it to an MCP client config:

{
  "mcpServers": {
    "snap": {
      "command": "npx",
      "args": ["-y", "snap-mcp-server"],
      "env": {
        "SNAP_RPC_URL": "https://your-rpc-url.com",
        "SNAP_POOL_ADDRESS": "B8SyffZKt8LABKogWjH9rZcjY5PV2hyYRCbTxxbcrpFf"
      }
    }
  }
}

Tools

| Tool | Description | |------|-------------| | snap_list_pools | List SNAP mainnet shielded pools | | snap_deposit | Deposit SOL/USDC into a shielded pool, returns a note | | snap_withdraw | Withdraw with a note, optionally via relayer | | snap_withdraw_private | Relayed (gas-abstracted) withdrawal | | snap_estimate_fee | Estimate the 0.25% protocol fee | | snap_pool_info | Public info for the configured pool | | snap_balance | Private shielded balance (requires a viewing key) |

Environment

| Variable | Required | Description | |----------|----------|-------------| | SNAP_RPC_URL | yes | Solana RPC endpoint | | SNAP_POOL_ADDRESS | yes | Default shielded pool address | | SNAP_RELAYER_URL | no | Relayer URL for gas-abstracted private withdrawals | | SNAP_MCP_NOTE | no | Serialized note used when a withdraw call omits one | | SNAP_MCP_VIEWING_KEY_JSON | no | Viewing key JSON for snap_balance | | SNAP_MCP_STUB_MODE | no | Set to 1 for deterministic offline transport testing |

Mainnet Pools

| Pool | Address | |------|---------| | 0.1 SOL | B8SyffZKt8LABKogWjH9rZcjY5PV2hyYRCbTxxbcrpFf | | 1 USDC | 5LeuHrPBgHNhgbCy996MEjcsBk5gNHhVj6AiuuCHZ8od | | 10 USDC | ECuHf8kgiWfmL3Q6id4WGBQWvuukhzqvF5vsxuPAKZBv |

Links

License

MIT