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How to connect Tpscheck to Claude

Connect Claude Web, Desktop and Cowork to Tpscheck MCP. Check if this number is tps registered, verify marketing call compliance for list, and more using natural language, with authentication handled for you.

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Tpscheck is a real-time service for verifying UK phone numbers against TPS and CTPS registers. It helps prevent unwanted marketing calls and ensures compliance with UK telemarketing laws.

1 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Tpscheck account to Claude via Composio Connect, enabling it to check if this number is TPS registered, verify marketing call compliance for list, find provider and type for a number, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Tpscheck with

Claude CodeOpenAI Agents SDKClaude Agent SDKCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Tpscheck to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Tpscheck account

Back in Claude, ask it to connect to Tpscheck or give it any Tpscheck-related task.

For example, ask Claude to:

  • "Check if this number is TPS registered"
  • "Verify marketing call compliance for list"
  • "Find provider and type for a number"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Tpscheck account is ready to use.

What is the Tpscheck Claude Connector, and what's possible with it?

The Tpscheck MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Tpscheck account. It provides structured and secure access to UK phone number verification services, so your agent can instantly check TPS/CTPS registration, validate numbers, determine their type, and identify providers on your behalf.

  • Real-time TPS/CTPS registration checks: Instantly verify if any UK phone number is listed on the Telephone Preference Service (TPS) or Corporate TPS, ensuring compliance with marketing regulations.
  • Phone number validity verification: Quickly determine if a phone number is valid and active before using it for outreach or communication purposes.
  • Number type and classification detection: Identify whether a number is mobile, landline, or business, helping tailor your contact strategy accordingly.
  • Location and provider lookup: Retrieve geographic and telecom provider information for any UK number to better understand and segment your contact lists.

Troubleshooting

1. Why does Claude not use the Composio connector for Tpscheck?

The connector can show as connected, but Claude must use it in each Tpscheck conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Tpscheck again.

2. Why does Claude show an MCP server error before Tpscheck connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Tpscheck.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Tpscheck.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Tpscheck authorization link not work?

The Composio connector is one server. Your Tpscheck account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Tpscheck connection.
  • Composio creates a fresh Tpscheck authorization link.
  • Open that link in your browser and finish the Tpscheck sign-in.

4. Why do Tpscheck actions fail after they worked before?

The Tpscheck connection can expire or lose permission.

  • Ask Claude to inspect the Tpscheck connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Tpscheck account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Tpscheck.
  • If the action still fails with a permission error, check that the connected account has that permission in Tpscheck itself.

5. How do I switch to a different Tpscheck account?

Claude can manage the Tpscheck connection for you.

  • Ask Claude to disconnect or delete the current Tpscheck account.
  • Ask Claude to connect Tpscheck again.
  • Open the new Composio authorization link for Tpscheck.
  • Sign in with the other Tpscheck account in the browser.
  • After the account connects, ask Claude to retry the Tpscheck task.

6. Why is my Tpscheck connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Tpscheck connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Tpscheck tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Tpscheck.
TOOLS

Supported Tools

Every Tpscheck action and event your agent gets out of the box.

Check Phone Number (TPS/CTPS)

Checks if one or more UK phone numbers are registered on the Telephone Preference Service (TPS) and/or Corporate Telephone Preference Service (CTPS) lists using the tpsapi.

FRAMEWORKS

How to build Tpscheck MCP Agent with another framework

Claude Code logo

Claude Code

Use Tpscheck MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Tpscheck MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Tpscheck MCP with Claude Agent SDK

Codex logo

Codex

Use Tpscheck MCP with Codex

OpenClaw logo

OpenClaw

Use Tpscheck MCP with OpenClaw

Hermes logo

Hermes

Use Tpscheck MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Tpscheck MCP with Atomic Agent

Google ADK logo

Google ADK

Use Tpscheck MCP with Google ADK

LangChain logo

LangChain

Use Tpscheck MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Tpscheck MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Tpscheck MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Tpscheck MCP with LlamaIndex

CrewAI logo

CrewAI

Use Tpscheck MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Tpscheck MCP with Pydantic AI

AutoGen logo

AutoGen

Use Tpscheck MCP with AutoGen

FAQ

Frequently asked questions

With a standalone Tpscheck MCP server, the agents and LLMs can only access a fixed set of Tpscheck tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Tpscheck and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Tpscheck tools.

Yes, absolutely. You can configure which Tpscheck scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Tpscheck data and credentials are handled as safely as possible.

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