<p align="center"> <picture> <source media="(prefers-color-scheme: dark)" srcset="https://cdn.jsdelivr.net/npm/@odatano/brand@1/logos/nightgate-mcp-logo.svg"> <img src="https://cdn.jsdelivr.net/npm/@odatano/brand@1/logos/nightgate-mcp-logo-on-light.svg" alt="NIGHTGATE MCP" height="84"> </picture> </p>

@odatano/nightgate-mcp

MCP server for NIGHTGATE on Midnight. Anchors documents, proves zero-knowledge claims over hidden fields, grants and verifies disclosure against live contract state; swaps shielded tokens over an offer board and mints them on a token factory. Transactions are sponsored, the agent holds no NIGHT. The chain is read through the ODATANO API: no indexer, no node.

Quick start

Get an oda_… key at api.odatano.dev (Cardano wallet sign-in, a redeem code, or tADA over x402), then:

{
  "mcpServers": {
    "nightgate": {
      "command": "npx",
      "args": ["-y", "@odatano/nightgate-mcp"],
      "env": { "ODATANO_ACCESS_KEY": "oda_..." }
    }
  }
}

Claude Code: claude mcp add nightgate --env ODATANO_ACCESS_KEY=oda_... -- npx -y @odatano/nightgate-mcp

The hosted gateway is the default (Midnight preprod). The same key works for @odatano/core-mcp (Cardano). Node.js >= 20.

Tools

docs/tools.md lists every tool and the two flows: fee sponsoring (build and prove here, a sponsor pays) and shielded swaps (two halves, one sponsor). Errors carry the server's HTTP status and code.

Configuration

docs/configuration.md: every variable, an own NIGHTGATE instance, version requirements. Needs NIGHTGATE >= 0.35.0, which the hosted gateway runs.

Development

npm install && npm run integration

Live lanes:

NIGHTGATE_LIVE=1 NIGHTGATE_TEST_CONTRACT=<vault> NIGHTGATE_TEST_PAYLOAD_HASH=<64 hex> npm run integration
NIGHTGATE_SEED_HEX=<hex> NIGHTGATE_VAULT=<vault> npm run live:sponsor-unbound

License

Apache-2.0