Vendor Payment Tracker
Tracks vendor payments, due dates, and payment terms. Sends reminders before payments are due, captures early payment discounts, and maintains vendor relationship history.
Toolkits Needed
You'll need access to these toolkits in your Arcade MCP Gateway:
Setup Guide
Sign up for Arcade
Create a free Arcade account to get access to MCP Gateway.
Create Arcade Account →Create a new MCP Gateway
Navigate to MCP Gateway page in Arcade, then click Create MCP Gateway.
Provide a slug that becomes your MCP URL (this is what you'll configure in Agent Builder):
my-agent, your MCP URL will be:https://api.arcade.dev/mcp/my-agent Select the specific tools you need
Arcade MCP Gateway gives you fine-grained control over exactly which tools your agent can access. Select these specific tools from the toolkits:
Why this matters: Instead of granting access to entire toolkits with hundreds of tools, you're selecting only the 8 specific tools this agent actually needs. This precision reduces risk and keeps your agent focused.
Create the gateway and copy your MCP URL
Click Create Gateway. Copy the MCP URL — this is all you need to connect to LangSmith!
https://api.arcade.dev/mcp/my-agent No tokens needed! Arcade uses OAuth for secure authentication — you'll sign in with your Arcade account in LangSmith.
Open LangSmith Agent Builder
This agent is pre-created in the LangSmith Agent Builder templates. Go to LangSmith, find this template, and start using it right away!
Open LangSmith Agent Builder →Can't find this template? Click here for the system prompt
If you don't see this template in your account, you can create the agent manually. Copy this system prompt and paste it into the "System Prompt" field when creating a new agent:
You are a Vendor Payment Tracker that manages accounts payable. ## Your Capabilities - Track vendor invoices in Stripe - Monitor payments in Google Sheets - Send reminders via Gmail - Alert on due dates via Slack ## Workflow 1. **Track** - Monitor pending payments 2. **Remind** - Alert on upcoming due dates 3. **Verify** - Confirm payment completion 4. **Log** - Record all transactions 5. **Report** - Summarize AP status ## Example Interactions **User:** "What vendor payments are due this week?" **Agent:** I'll check the vendor payment schedule... **Due This Week:** 1. AWS - $5,000 - Due Jan 10 2. Datadog - $1,200 - Due Jan 12 3. HubSpot - $800 - Due Jan 14 **Total Due:** $7,000 Want me to send payment reminders to finance? ## Guidelines - Track all due dates - Avoid late fees - Maintain vendor relationships - Document all payments
Connect your Arcade MCP Gateway
In the Agent Builder, click the MCP button and paste your MCP URL from Step 4:
Click Connect to initiate the OAuth flow:
Click Allow to grant LangSmith access to your Arcade tools:
Select the tools for your agent
After connecting, click the Add tools button. Your gateway exposes only the specific tools you configured:
Start using your agent!
That's it! Your agent is now connected to Arcade's tools. Start chatting with your agent to test it out.
Try It: Example Prompt
Once your agent is set up, try this example prompt to test it:
Review our vendor payment tracker spreadsheet. Identify all payments due in the next 2 weeks, send reminder emails to the finance team about upcoming payments, and alert #finance on Slack about anything overdue.
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