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Placetel MCP by usefulapi

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

The registry describes it as: Read Placetel calls, recordings, numbers and routing; edit contacts, start calls, send SMS.

We read its 28 tools on 2026-10-31. 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.

Connect it

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

Claude Code

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

Cursor: ~/.cursor/mcp.json

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

VS Code

code --add-mcp '{"name":"placetel","type":"http","url":"https://placetel.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.

Install lazaretto-guard

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

Tools it advertises

placetel_get_account placetel_list_users placetel_list_sip_users placetel_get_sip_user placetel_list_calls placetel_get_call placetel_list_call_detail_records placetel_list_recordings placetel_list_contacts placetel_get_contact placetel_list_numbers placetel_get_number placetel_list_number_profiles placetel_list_routings placetel_get_routing placetel_list_routing_plans placetel_list_groups placetel_list_sites placetel_list_faxes placetel_get_fax placetel_list_call_center_queues placetel_list_call_center_agents placetel_list_call_center_calls placetel_create_contact placetel_update_contact placetel_activate_number_profile placetel_initiate_call placetel_send_sms

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): 21da245c18253acf. 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:

Markdown

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

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.