# How to connect ContactOut to Claude

```json
{
  "title": "How to connect ContactOut to Claude",
  "toolkit": "ContactOut",
  "toolkit_slug": "contactout",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/contactout/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/contactout/framework/claude-cowork.md",
  "updated_at": "2026-09-12T05:32:59.398Z"
}
```

## 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 ContactOut account to Claude via Composio Connect, enabling it to find contact emails for Acme marketing team, enrich profile for John Smith, CEO, verify emails for this candidate list, 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 ContactOut with

- [ChatGPT Work](https://composio.dev/toolkits/contactout/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/contactout/framework/hermes-agent)

## Connect ContactOut to Claude Cowork

### Connecting ContactOut to Claude Web, Desktop, and Cowork
1. Open Customize
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
2. Add the Composio MCP server
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

## What is the ContactOut MCP server, and what's possible with it?

The ContactOut MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your ContactOut account. It provides structured and secure access so your agent can perform ContactOut operations on your behalf.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `CONTACTOUT_ADD_CAMPAIGN_RECIPIENTS` | Add Campaign Recipients | Add 1-100 recipients to an existing campaign. This consequential write immediately changes the campaign's recipient set and may lead to outreach when the campaign is active. A successful request can still contain failed recipients, so inspect every result and both counts. Production Campaigns entitlement and mutation behavior are not live-verified. |
| `CONTACTOUT_CHECK_LINKEDIN_CONTACT_AVAILABILITY` | Check LinkedIn Contact Availability | Check whether a LinkedIn profile has a personal email, work email, or phone without revealing it or consuming credits. Requires a paid ContactOut production entitlement. |
| `CONTACTOUT_COUNT_PEOPLE` | Count People | Estimate matching people and available personal emails, work emails, and phones from substantive People Search filters without consuming credits. This endpoint requires a paid ContactOut production entitlement; sandbox sample access does not confirm production access. |
| `CONTACTOUT_CREATE_BULK_EMAIL_VERIFICATION_JOB` | Create Bulk Email Verification Job | Queue asynchronous deliverability verification for 1-100 email addresses, optionally delivering results to an HTTP or HTTPS callback URL; may consume verifier credits. |
| `CONTACTOUT_CREATE_LINKEDIN_CONTACT_INFO_BATCH_JOB` | Create LinkedIn Contact Info Batch Job | Queue asynchronous contact discovery for 1-1000 LinkedIn profiles, optionally delivering results to a callback URL; may consume credits per profile. |
| `CONTACTOUT_ENRICH_COMPANIES_BY_DOMAIN` | Enrich Companies by Domain | Return company profiles for 1-30 domains; each found company consumes a search credit. |
| `CONTACTOUT_ENRICH_LINKEDIN_PROFILE` | Enrich LinkedIn Profile | Return a professional profile for a regular LinkedIn profile URL, optionally including contact data; may consume search, email, and phone credits. |
| `CONTACTOUT_ENRICH_PERSON` | Enrich Person | Find and enrich one person using a LinkedIn URL, email, or phone; alternatively, provide a name plus employer, education, location, or job-title evidence. May consume search and requested contact-data credits. |
| `CONTACTOUT_ENRICH_PERSON_BY_EMAIL` | Enrich Person by Email | Return a professional profile matched from an email address, optionally requesting real-time work-email verification. A successful match may consume email and phone credits. |
| `CONTACTOUT_FIND_LINKEDIN_PROFILE_BY_EMAIL` | Find LinkedIn Profile by Email | Resolve an email address to its matching LinkedIn profile URL. A successful match consumes one email credit. |
| `CONTACTOUT_GET_API_USAGE_STATS` | Get API Usage Stats | Return ContactOut API credit usage and quotas for a billing month. Remaining and over-quota fields are available for postpaid accounts, while prepaid accounts report remaining balances in quota fields. ContactOut sandbox responses contain fixed illustrative samples; never present those values as the connected account's real balances. |
| `CONTACTOUT_GET_BULK_EMAIL_VERIFICATION_JOB` | Get Bulk Email Verification Job | Get the status and available per-email results of an asynchronous bulk email-verification job. |
| `CONTACTOUT_GET_CAMPAIGN` | Get Campaign | Return one campaign's sequence steps and optionally its performance statistics. Production Campaigns entitlement depends on the connected ContactOut account. |
| `CONTACTOUT_GET_HASHED_EMAIL_IDENTIFIERS` | Get Hashed Email Identifiers | Return unordered SHA-256 hashes of normalized personal emails found for 5-100 distinct LinkedIn profiles. Hashes are not mapped back to profiles and may consume email credits. |
| `CONTACTOUT_GET_LINKEDIN_CONTACT_INFO` | Get LinkedIn Contact Info | Reveal email and optionally phone contact information for one regular LinkedIn profile URL; consumes credits when data is found. |
| `CONTACTOUT_GET_LINKEDIN_CONTACT_INFO_BATCH` | Get LinkedIn Contact Info Batch | Synchronously reveal contact information for 1-100 LinkedIn profiles; may consume email and phone credits per profile. |
| `CONTACTOUT_GET_LINKEDIN_CONTACT_INFO_BATCH_JOB` | Get LinkedIn Contact Info Batch Job | Get the status and available results of an asynchronous LinkedIn contact-info batch job. |
| `CONTACTOUT_LIST_CAMPAIGNS` | List Campaigns | Return one page of email campaigns and their lifecycle statuses. Production Campaigns entitlement is unverified; the connected API token may require additional ContactOut plan access. |
| `CONTACTOUT_LIST_DECISION_MAKERS` | List Decision Makers | Return one page of key decision makers for the best-matching company. For the first page, provide a company LinkedIn URL, domain, or name. Returned profiles consume search credits; reveal_info may also consume email and phone credits. |
| `CONTACTOUT_REMOVE_CAMPAIGN_RECIPIENTS` | Remove Campaign Recipients | Destructively remove 1-100 recipients from an existing campaign by email. The request can partially succeed, so inspect every result and both counts. Production Campaigns entitlement and this mutation remain unverified without an isolated campaign fixture. |
| `CONTACTOUT_SEARCH_COMPANIES` | Search Companies | Return one page of companies matching identity, size, location, industry, technology, revenue, or founding-year filters. Each returned company consumes a search credit. |
| `CONTACTOUT_SEARCH_PEOPLE` | Search People | Return one page of professional profiles matching person, role, employer, education, location, and contact-availability filters. Returned profiles consume search credits; reveal_info may also consume email and phone credits. |
| `CONTACTOUT_START_CAMPAIGN` | Start Campaign | Start a draft ContactOut campaign or resume a stopped campaign. This can immediately begin sending real outreach to the campaign's recipients and is an irreversible external side effect; confirm the campaign ID and intent before calling. Calling it for an already-active campaign is an idempotent success. Production Campaigns entitlement depends on the connected account. |
| `CONTACTOUT_STOP_CAMPAIGN` | Stop Campaign | Stop a running ContactOut campaign, interrupting its outreach. This is a consequential lifecycle change; use only with an explicitly selected active campaign. Repeating the request for an already-stopped campaign is treated as an idempotent success when ContactOut returns success. |
| `CONTACTOUT_VERIFY_EMAIL` | Verify Email | Check one email address for valid, invalid, accept-all, disposable, or unknown deliverability. A valid, invalid, or accept-all result may consume one verifier credit. |

## Supported Triggers

None listed.

## Troubleshooting

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

The connector can show as connected, but Claude must use it in each ContactOut conversation.
- Click + at the lower left of the chat, or type /.
- Hover Connectors.
- Turn on Composio.
- Ask Claude to connect to ContactOut again.

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

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for ContactOut.
- 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 ContactOut.
- If it fails again, send the error and the ofid_ reference id to support@composio.dev.

### 3. Why does the ContactOut authorization link not work?

The Composio connector is one server. Your ContactOut account connects separately when Claude asks for it.
- If the browser does not open, or the link expires, ask Claude to retry the ContactOut connection.
- Composio creates a fresh ContactOut authorization link.
- Open that link in your browser and finish the ContactOut sign-in.

### 4. Why do ContactOut actions fail after they worked before?

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

### 5. How do I switch to a different ContactOut account?

Claude can manage the ContactOut connection for you.
- Ask Claude to disconnect or delete the current ContactOut account.
- Ask Claude to connect ContactOut again.
- Open the new Composio authorization link for ContactOut.
- Sign in with the other ContactOut account in the browser.
- After the account connects, ask Claude to retry the ContactOut task.

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

The connector belongs to your Claude account, so your ContactOut connection works in Claude Web, Desktop, and Cowork.
- In Claude Desktop, open Customize > Connectors.
- Next to Composio, click ⋮ and click Clear cache.
- If ContactOut 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 ContactOut.

## Creating MCP Server - Stand-alone vs Composio SDK

The ContactOut MCP server connects Claude Web, Desktop, and Cowork to your ContactOut account through Composio. Once connected, Claude can use the available ContactOut tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build ContactOut MCP Agent with another framework

- [ChatGPT Work](https://composio.dev/toolkits/contactout/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/contactout/framework/hermes-agent)

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and ContactOut MCP?

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

### Can I use Tool Router MCP with Claude Cowork?

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 ContactOut tools.

### Can I manage the permissions and scopes for ContactOut while using Tool Router?

Yes, absolutely. You can configure which ContactOut 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.

### How safe is my data with Composio Tool Router?

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 ContactOut data and credentials are handled as safely as possible.

---
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