Arbiter MCP Server

Arbiter is an MCP integration. Is this transaction safe to sign? Decodes what it really does and answers allow, warn or block.

Packages and local setup

The published npm package is @arbiterlabs/mcp, version 0.1.1. Its declared MCP transport is stdio.

The package declares ARBITER_URL: Arbiter deployment to call. Defaults to the hosted service.; ARBITER_PRIVATE_KEY (required): Base64-encoded 64-byte Algorand private key used to pay for calls. The account needs USDC and must be opted in to the USDC asset. Without it every request stops at the paywall.; ARBITER_MAX_SPEND_USD: Lifetime spending cap for this process, in USD. Enforced before anything is signed.; ARBITER_MAX_PRICE_PER_CALL: Refuse any single call priced above this, in USD..

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 · Project website. This profile uses version 0.1.1 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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