LocalFree server, account needed

AISchemaGate and DataContractGate MCP server

nightmoose/contractgate

AISchemaGate validates and repairs structured LLM output against a contract, plus DataContractGate.

4 GitHub stars
Source code Website

Install AISchemaGate and DataContractGate in Claude Code

Claude Code
claude mcp add aischemagate-and-datacontractgate -e CONTRACTGATE_API_KEY=... -- npx -y @nightmoose/contractgate-mcp-server
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "aischemagate-and-datacontractgate": {
      "command": "npx",
      "args": [
        "-y",
        "@nightmoose/contractgate-mcp-server"
      ],
      "env": {
        "CONTRACTGATE_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the AISchemaGate and DataContractGate MCP server do?

AISchemaGate validates and repairs structured LLM output against a contract, plus DataContractGate.

Is the AISchemaGate and DataContractGate MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does AISchemaGate and DataContractGate run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add AISchemaGate and DataContractGate to Claude Code?

Run: claude mcp add aischemagate-and-datacontractgate -e CONTRACTGATE_API_KEY=... -- npx -y @nightmoose/contractgate-mcp-server

More ai agents & coding agents MCP servers

View all

Albyhub Admin

0125

llmops-pro/albyhub-admin-mcp

Admin an Alby Hub Lightning node from an agent: info, balances, channels; safety-gated writes.

LocalAccount needed

ai-audit-trail

4

sundsoffice-tech/ai-audit-trail

Tamper-evident audit trails for AI agents — Ed25519-signed, hash-chained, EU AI Act ready.

LocalFree

Argus

4

chriswu727/argus

Testing MCP for coding agents: exercise real user journeys, find bugs, verify them with evidence.

LocalFree

Aguara

4

garagon/mcp-aguara

Scan skills, MCP configs, and agent content for injection and supply-chain risks. Offline, no LLM.

LocalFree

Clawbackai

126

Rckl88/clawbackai

LLM cost optimization. Audit your calls, prove savings, route to the cheapest quality model. BYOK.

LocalFree

Agenttrust

0111

bch1212/agenttrust-mcp

Trust scores & reputation for the agent-to-agent economy. Verify A2A counterparties.

LocalFree