Send a letter from Codex CLI.

Add paperplane to Codex CLI’s config.toml and it can quote, send, and track a real USPS letter from the command line — no account required.

Free to preview — see the exact PDF before you pay. Sending starts at $1.99, no account required.

Set it up in Codex CLI

Step 1

Add to ~/.codex/config.toml

[mcp_servers.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.

The same three calls from the CLI, any MCP client or plain REST. Sandbox is free and mails nothing.

[mcp_servers.paperplane]
url = "https://sendpaperplane.com/api/mcp"

Where does the config go?

Add a [mcp_servers.paperplane] block with the MCP URL to ~/.codex/config.toml.

Can I test it without spending anything?

Yes — sandbox mode runs the full quote-then-send flow for free and mails nothing.

How much does sending cost?

Letters start at $1.99 for First-Class; Certified Mail starts at $12.99, shown as one exact total on every quote before you approve it.