{"generated_at":"2026-08-17T10:36:11+00:00","item":{"added_at":"2026-03-10","analysis_method":"capability_triage","category":"Web Connector","description":"Connect Brex to Claude for automating your company's finances. Finance monitors compliance and runs powerful queries. Employees get personalized memo guidanc...","did":"com-brex-mcp","homepage_url":"","icon":"https://brand.brex.com/m/232ed2ecefdd95c0/original/Brex-symbol-ink-gray-1024x1024px.svg","id":"com.brex/mcp","installs":0,"last_scanned":"","license":"","long_description":"Connect Brex to Claude for automating your company's finances. Finance monitors compliance and runs powerful queries. Employees get personalized memo guidance, policy answers, and status updates. Permission-based access ensures admin oversight while streamlining management.","name":"Brex","plutonium_url":"https://plutonium.pluto.security/detail.html?planet=claudesec&did=com-brex-mcp&utm_source=plutonium_analysis_skill&utm_medium=claude_skill&utm_campaign=connector_risk_assessment","publisher":"Brex","publisher_url":"https://brex.com/","repository_url":"","risk":"high","risk_severity":"high","security_risks":[{"description":"This connector can read data the connected service holds about you - documents, messages, contact lists, source code, customer records, or saved profile details - and pass it back to the AI.","evidence":"Connector has 10 tools; permissions on claude.ai/directory: \"Read\". Data flows out of the connected service into the model.","remediation":{"block_tool_categories":[],"steps":["Connect using an account that only has access to the information you actually want Claude to read - not your main admin login.","When you grant access, pick the smallest set of folders, mailboxes, or channels possible.","Check the connector's activity log every so often to make sure nothing unexpected is being read."]},"risk_type":"reads_private_data","severity":"low","title":"Reads your private information"},{"description":"This connector can complete purchases, bookings, or payments. A misused or hijacked prompt could result in real financial charges before you confirm.","evidence":"1 financial tool on this connector - e.g. get_reimbursement_payout_date.","remediation":{"block_tool_categories":["financial"],"steps":["In the tools list below, turn off any tool tagged Block by default; only enable them when you actually want Claude to make a purchase.","Set a spending limit on the linked credit card, billing account, or virtual card so a mistake can't cost you much.","Always confirm in the chat before Claude completes a payment or books anything."]},"risk_type":"spends_money","severity":"high","title":"Can spend money on your behalf"},{"description":"This connector can post messages, emails, or chat replies on your behalf. Recipients will believe the message came from you, which makes phishing or social-engineering risks higher.","evidence":"1 sends externally tool on this connector - e.g. list_users_by_name_or_email.","remediation":{"block_tool_categories":["sends_externally"],"steps":["In the tools list below, turn off any tool tagged Block if you don't need Claude to send messages or emails on your behalf.","If you do enable sending, restrict it to a private channel or distribution list - never customer-facing or company-wide.","Read the message before it goes out: don't let Claude send anything without you confirming first."]},"risk_type":"sends_messages_as_you","severity":"medium","title":"Can send messages as you"},{"description":"Anything you share with this connector flows through one or more third-party services. Those companies see, store, and may use the data according to their own policies.","evidence":"Server runs at api.brex.com/mcp; queries and responses pass through the publisher's infrastructure.","remediation":{"block_tool_categories":[],"steps":["Treat anything you tell this connector as if you sent it directly to the third-party company - because you did.","Check how long that company keeps your data and how to delete it.","Avoid putting health info, customer names, or payment details into this connector unless you have a written agreement with that company."]},"risk_type":"forwards_data_to_third_party","severity":"low","title":"Sends your data to outside companies"}],"signature_status":"unknown","source_code_reviewed":false,"tags":["network_access","reads_private_data","financial_ops","email_messaging"],"tools":[{"description":"Retrieves a card by its unique ID.","name":"get_card_by_id"},{"description":"Retrieves expense policy information for a limit as structured, validatable content.","name":"get_expense_policy"},{"description":"Retrieves the expected payout date for a reimbursement expense.","name":"get_reimbursement_payout_date","risk":{"category":"financial","level":"high","recommendation":"Block by default. Require human-in-the-loop confirmation for every transaction; do not allow autonomous execution.","why":"Initiates a financial transaction or paid action. A confused-deputy or prompt-injection scenario can spend money on the user's behalf."}},{"description":"Retrieves a user by their unique ID.","name":"get_user_by_id"},{"description":"Retrieves the current authenticated user.","name":"get_user_myself"},{"description":"","name":"list_my_cards"},{"description":"","name":"list_my_expenses"},{"description":"Lists all spend limits that apply to the current user with pagination support.","name":"list_my_limits"},{"description":"Lists users with optional filtering and pagination.","name":"list_users"},{"description":"Lists users by name or email.","name":"list_users_by_name_or_email","risk":{"category":"sends_externally","level":"medium","recommendation":"Restrict to specific channels; require confirmation before sending. Disable if the connector is used in untrusted contexts.","why":"Sends a message or post on the user's behalf to people or channels outside the conversation. Phishing, leaking secrets, or impersonation become possible if the tool is hijacked."}}],"tools_count":10,"type":"web_connector","url":"https://claude.ai/directory/9fc52c5f-5a64-4f59-a6f8-4aa9571b8179","uuid":"7e9c0931-7cae-5c94-952c-de23df28ab04","version":""},"query_key":"brex","schema_version":1,"status":"match"}