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Vision6 MCP by usefulapi

io.usefulapi/vision6 in the official MCP registry. Endpoint https://vision6.usefulapi.io/mcp. Source: github.com/m190/usefulapi-mcp.

The registry describes it as: Read Vision6 lists, contacts, messages and reports; update contacts; send transactional email/SMS.

Connect it

The endpoint answers MCP over HTTP; that is how we read it. Add it to your client:

claude mcp add --transport http vision6 https://vision6.usefulapi.io/mcp

{
  "mcpServers": {
    "vision6": {
      "url": "https://vision6.usefulapi.io/mcp"
    }
  }
}

code --add-mcp '{"name":"vision6","type":"http","url":"https://vision6.usefulapi.io/mcp"}'

Some servers ask you to sign in the first time a client connects, or want a key from the people who run them; the server's own docs say which.

Let Claude Code check servers as it adds them

With the free lazaretto-guard plugin installed, when Claude Code adds a server for you or writes one into an MCP config, the plugin reads the server's tools first and asks you if one of our rules matches. Install it, restart Claude Code, then ask it to run the command above.

claude plugin marketplace add jamesdfinance-dev/lazaretto-plugins
claude plugin install lazaretto-guard@lazaretto-plugins

Tools it advertises

vision6_get_account vision6_list_lists vision6_get_list vision6_list_list_fields vision6_list_folders vision6_list_contacts vision6_get_contact vision6_list_messages vision6_get_message vision6_get_message_sender_defaults vision6_list_reports vision6_get_report vision6_list_sent_contacts vision6_list_transactional_groups vision6_get_transactional_group vision6_create_contact vision6_add_contacts vision6_update_contact vision6_delete_contact vision6_create_list vision6_create_message vision6_update_message vision6_send_transactional

Tool changes

We compare every full read of this server with the one before. No change in what its tools say has been seen since we started keeping this record on 2026-10-30.

Fingerprint of its tools at our last full read (2026-10-31): 3ec2c0a158676dfa. A client can hash the tools it is served the same way and compare; the full value and a hash per tool are in this page as JSON.

Run this server? Show the check in your README

The badge reflects the latest weekly read:

[![MCP tool check](https://lazaretto.dev/mcp-registry/io-usefulapi-vision6/badge.svg)](https://lazaretto.dev/mcp-registry/io-usefulapi-vision6)

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.

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