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Have It Printed
com.haveitprinted/print-and-mail in the official MCP registry.
Endpoint https://agents.haveitprinted.com/mcp.
The registry describes it as: Print and mail physical documents in the US via USPS, with quotes, agent payment and tracking.
We read its 11 tools on 2026-10-27. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
hip_get_service_info hip_create_job hip_get_upload_target hip_add_text_document hip_update_job hip_quote hip_create_checkout hip_get_checkout_status hip_prepare_payment hip_complete_payment hip_get_order
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/com-haveitprinted-print-and-mail)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.