Brex MCP server
Remote endpoint api.brex.com/mcp. Checked September 2026.
Card expenses, spend limits, bank transactions, vendor bills, and travel are what Brex's server at api.brex.com/mcp reads, in beta. Its writes stay on the signed-in user's own transactions: it can fix an expense's memo, attendees, or receipt and assign the expense to a spend limit.
Brex MCP options
Every fact in a row comes from the publisher's own documentation.
Connect Brex to your assistant
Each card lists the servers whose setup guide covers that assistant.
Connect Brex to ChatGPT or Codex
Connect Brex to Claude
- Brex MCP (opens in a new tab) Add from Claude's connector directory (opens in a new tab)
Claude Code
claude mcp add --transport http brex https://api.brex.com/mcp
Connect Brex to Cursor
- Brex MCP (opens in a new tab)
.cursor/mcp.json
{"mcpServers":{"brex":{"url":"https://api.brex.com/mcp"}}}
Brex's setup guides also name Slack.
Other ways to reach Brex data
One MCP server per tool still can't answer a cross-channel question.
Each server brings its own sign-in, its own definition of revenue, and data your assistant can't join to the rest.
SourceMedium connects 63 commerce and marketing sources, keeps one set of maintained definitions, and gives ChatGPT, Claude, and other assistants a single connection to all of it. SourceMedium delivers Brex as raw tables today, not modeled ones.