Brex

Add the connection from eve's registry. This writes the initial definition under agent/connections/ and installs its authentication dependency when needed:

eve add connection/brex

Create agent/connections/brex.ts. The connection name is derived from the filename:

// agent/connections/brex.tsimport { connect } from "@vercel/connect/eve";import { defineMcpClientConnection } from "eve/connections";
export default defineMcpClientConnection({  url: "https://api.brex.com/mcp",  description: "Brex: expenses, cards, budgets, and cash.",  auth: connect("brex"),});

Connect owns the OAuth flow, and each end-user authorizes in their own browser before their first tool call.

Link your project, create the connector, and pull OIDC locally:

vercel linkvercel connect create brexvercel env pull

See the Connections docs for principal types, headers, approval, and protocol-specific filters.