Assay MCP Server

Assay is an MCP integration. X402 service-quality oracle: check a service's paid-probe quality tier and score before paying it.

Packages and local setup

The published npm package is assay-oracle-mcp, version 0.2.0. Its declared MCP transport is stdio.

The package declares ASSAY_URL: Assay instance to query (default: https://assay.nominal-labs.com); ASSAY_WALLET_KEY: Optional Base wallet private key; when set, get_score auto-purchases full reports ($0.005, hard-capped 0.01 USDC/call).

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry · Project repository. This profile uses version 0.2.0 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

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