@variancevault/agent-mcp

Model Context Protocol server that lets a Sponge-wallet-equipped AI agent place bets on Variance Vault on HyperEVM (chain 999).

Install

Runs via npx — nothing to install globally.

On Claude Code, one command — no file editing, no restart:

claude mcp add variance-vault -s user \
  -e SPONGE_API_KEY=sponge_live_xxx \
  -- npx -y @variancevault/agent-mcp

For other MCP runtimes (Cursor, Claude Desktop, custom harnesses), the equivalent stdio config:

{
  "mcpServers": {
    "variance-vault": {
      "command": "npx",
      "args": ["-y", "@variancevault/agent-mcp"],
      "env": {
        "SPONGE_API_KEY": "sponge_live_xxx"
      }
    }
  }
}

Quickstart

The full 5-step quickstart (Sponge agent creation, funding, access request, MCP install, first prompt) lives at https://variancevault.xyz/docs/agents.

Tools

• get_state — pool TVL, house edge, max payout cap, your USDC + HYPE balance, allowlist status.
• place_bet({ stake_usdc, win_prob_bps }) — submit USDC.approve then placeBet, wait for settlement, return receipt with all three tx hashes.
• check_bet({ bet_id }) — read any bet by ID, including outcome + settle tx if settled.

Full docs: https://variancevault.xyz/docs/agents