Send a letter from JetBrains AI Assistant.
Add paperplane in JetBrains AI Assistant’s MCP settings and it can quote and send a real USPS letter — no account required, free sandbox mode included.
Free to preview — see the exact PDF before you pay. Sending starts at $1.99, no account required.
Set it up in JetBrains AI Assistant
Step 1
Settings → Tools → AI Assistant → Model Context Protocol
{
"mcpServers": {
"paperplane": { "url": "https://sendpaperplane.com/api/mcp" }
}
}Try it: free, nothing mailed
Tell your agent:
Using the paperplane tools, quote a 1-page certified letter to Property LLC, 1 Main St, Richmond VA 23220, then send it in sandbox mode.Not on JetBrains AI Assistant? Any surface works.
The same three calls from the CLI, any MCP client or plain REST. Sandbox is free and mails nothing.
{
"mcpServers": {
"paperplane": { "url": "https://sendpaperplane.com/api/mcp" }
}
}Common questions
Where is this setting in the IDE?
Settings → Tools → AI Assistant → Model Context Protocol — add the same JSON block shown above.
Is this the same as Junie?
No — Junie is a separate JetBrains product with its own config path (.junie/mcp/mcp.json). See the Junie persona page for that setup.
How much does sending cost?
Letters start at $1.99 for First-Class; Certified Mail starts at $12.99. Every quote shows the exact total before you approve anything, and sandbox mode is free.