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Plutio MCP by usefulapi

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

The registry describes it as: Manage Plutio clients, projects, tasks, time entries and invoices.

We read its 37 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 plutio https://plutio.usefulapi.io/mcp

Cursor: ~/.cursor/mcp.json

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

VS Code

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

plutio_get_workspace plutio_list_people plutio_list_companies plutio_list_projects plutio_list_task_boards plutio_list_task_groups plutio_list_tasks plutio_list_statuses plutio_list_time_entries plutio_list_categories plutio_list_events plutio_list_schedulers plutio_list_invoices plutio_list_invoice_subscriptions plutio_list_transactions plutio_list_proposals plutio_list_contracts plutio_list_forms plutio_list_form_responses plutio_list_notes plutio_list_comments plutio_list_conversations plutio_list_wiki_pages plutio_list_files plutio_list_folders plutio_list_custom_fields plutio_get_document_blocks plutio_create_person plutio_create_company plutio_create_project plutio_create_task plutio_update_task plutio_log_time plutio_create_comment plutio_create_event plutio_create_invoice plutio_add_invoice_items

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): 2bbc81f9a7890a63. 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-plutio/badge.svg)](https://lazaretto.dev/mcp-registry/io-usefulapi-plutio)

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.