# How to connect MoltSets to Claude

```json
{
  "title": "How to connect MoltSets to Claude",
  "toolkit": "MoltSets",
  "toolkit_slug": "moltsets",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/moltsets/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/moltsets/framework/claude-cowork.md",
  "updated_at": "2026-10-28T05:34:13.441Z"
}
```

## 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 MoltSets account to Claude via Composio Connect, enabling it to find mobile numbers for Acme decision makers, enrich this company profile with firmographic data, resolve advertising identities for recent website visitors, 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 MoltSets with

- [ChatGPT](https://composio.dev/toolkits/moltsets/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/moltsets/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/moltsets/framework/atomic-agent)

## Connect MoltSets to Claude Cowork

### Connecting MoltSets 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](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Composio&connectorUrl=https%3A%2F%2Fconnect.composio.dev%2Fmcp)
### Add manually
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
Click Add custom connector and paste in the Composio MCP server URL:

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

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

The MoltSets MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your MoltSets account. It provides structured and secure access to people and company search, profile enrichment, contact discovery, advertising identity resolution, and account usage data, so your agent can find prospects, enrich professional profiles, discover validated contact details, resolve company visitors, and review account usage on your behalf.
- People and company discovery: Have your agent search for ranked people and companies using names, domains, firmographics, industries, locations, and inclusion or exclusion filters.
- Professional profile enrichment: Let the agent enrich LinkedIn profiles or find business profiles from a person’s name and company, including company details and experience when available.
- Contact detail discovery: Direct your agent to find validated business or personal email addresses, mobile phone data, LinkedIn profiles, or reverse-match a person and company profile from an email address.
- Advertising identity resolution: Instruct your agent to retrieve email hashes, match a business email to a hashed personal email, or resolve an email address to a mobile advertising ID for audience matching.
- Account and usage reporting: Have your agent review plan capabilities, token and phone-token balances, billing details, tool costs, and daily or aggregate API usage.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `MOLTSETS_ENRICH_LINKEDIN_PROFILE` | Enrich LinkedIn Profile | Resolve a LinkedIn profile URL into a sparse full person and company profile, optionally including experience. A found result is billable against Enrichment Fair Use; found records consume tokens, misses do not, and every call counts as a request. Results can contain sensitive personal contact data and identity hashes; personal-email or SHA-256 fields may be omitted by plan restrictions while the lookup still succeeds. A status of not_found is a successful lookup miss. |
| `MOLTSETS_FIND_BEST_EMAIL_BY_LINKEDIN` | Find Best Email by LinkedIn | Find the best validated email for one LinkedIn profile or a batch of up to 100, preferring business email and falling back to sensitive personal email. Each item counts against Enrichment Fair Use; found records consume tokens and misses do not. HTTP 200 may represent not_found or a partial batch, so retry only items omitted from a partial response. |
| `MOLTSETS_FIND_BEST_US_PERSONAL_EMAIL_BY_LINKEDIN` | Find Best US Personal Email by LinkedIn | Find the highest-confidence validated sensitive personal email for one US LinkedIn profile or a batch of up to 100. Use this instead of the standard US personal-email selector when provider-ranked highest-confidence selection is required. This billable endpoint is capability-gated: first call GET_ACCOUNT and require personal_email_available=true, otherwise MoltSets returns 403 plan_restricted. Each item counts against Enrichment Fair Use; found records consume tokens and misses do not. Non-US profiles return HTTP 200 not_found. HTTP 200 may also contain a partial batch, so retry only omitted items. |
| `MOLTSETS_FIND_BUSINESS_EMAIL_BY_LINKEDIN` | Find Business Email by LinkedIn | Find a validated corporate email, without personal-email fallback, for one LinkedIn profile or a batch of up to 100. Each item counts against Enrichment Fair Use; found records consume tokens and misses do not. risk_score describes deliverability, not identity confidence. HTTP 200 may represent not_found or a partial batch, so retry only items omitted from a partial response. |
| `MOLTSETS_FIND_BUSINESS_EMAIL_BY_NAME` | Find Business Email by Name | Find a validated business email and matched LinkedIn URL from a person's name and company/domain. This is billed against Search Fair Use only when an email is found; every call still counts as a request. risk_score describes deliverability, not identity confidence, and a miss is HTTP 200 status=not_found. |
| `MOLTSETS_FIND_BUSINESS_PROFILE_BY_NAME` | Find Business Profile by Name | Find a sparse full person and company profile from a person's name and company or domain, optionally including experience. A matched result is billable against Search Fair Use and every call counts as a request. Results can contain sensitive personal contact data and identity hashes; personal-email or SHA-256 fields may be omitted by plan restrictions while the lookup still succeeds. A status of not_found is a successful lookup miss. |
| `MOLTSETS_FIND_COMPANY_BY_IP` | Find Company by IP | Resolve a B2B visitor IPv4 address to associated company domains and provider percentages. A found result is billable against Enrichment Fair Use; found records consume tokens, misses do not, and every call counts as a request. Consumer ISP addresses commonly return HTTP 200 status=not_found. Percentages are preserved as provider strings rather than interpreted as numeric confidence values. |
| `MOLTSETS_FIND_EMAIL_HASHES_BY_LINKEDIN` | Find Email Hashes by LinkedIn | Retrieve sensitive ad-audience match keys for one LinkedIn profile URL or slug: at most one business and one personal email hash in both SHA256 and MD5 formats. This endpoint does not return multiple hashes or accept batches. It costs one token when data is found; an HTTP 200 not_found costs no tokens but still counts as one Enrichment Fair Use request. The endpoint is unavailable on the $397/month and $997/month plans, which return 403 plan_restricted; retrying or adding tokens does not remove that plan restriction. |
| `MOLTSETS_FIND_LINKEDIN_BY_EMAIL` | Find LinkedIn by Email | Resolve one email address to the highest-confidence LinkedIn profile URL available from MoltSets. A found record consumes Enrichment Fair Use tokens; a miss consumes no tokens but every call counts as a request. A miss returns HTTP 200 with status=not_found. This lookup does not verify the email address. |
| `MOLTSETS_FIND_LINKEDIN_PROFILE` | Find LinkedIn Profile | Find matching person or company LinkedIn profiles from a person's name and company/domain. Set count_only=true for a non-fetching match count that consumes no records or tokens but still counts as a Search Fair Use request. Full results consume records and tokens only when found; not-found calls also count as requests. A miss is HTTP 200 status=not_found with an empty result list. |
| `MOLTSETS_FIND_MOBILE_ADVERTISING_ID_BY_EMAIL` | Find Mobile Advertising ID by Email | Resolve one email address to at most one highly sensitive Mobile Advertising ID (MAID), such as an Android AAID or Apple IDFA, for advertising audience matching and cross-device targeting. This Enrichment lookup is billable when found; misses cost no tokens but still count against the Fair Use request limit. The endpoint is unavailable on the $397 and $997 monthly plans: those plans receive 403 plan_restricted, and retrying or adding tokens does not remove the restriction. A miss returns HTTP 200 with status=not_found and empty or null results. Handle the returned advertising identifier as highly sensitive identity data and use it only with appropriate authorization and privacy controls. |
| `MOLTSETS_FIND_MOBILE_PHONE_BY_LINKEDIN` | Find Mobile Phone by LinkedIn | Find sensitive carrier-verified mobile data for one LinkedIn profile or a batch of up to 100. This requires a paid base plan and a separately billed phone-token subscription; first use GET_ACCOUNT to check phone_token_balance, phone_token_allowance, and phone_plan. Each returned number costs one phone token, while misses cost no phone token; insufficient balance can return 402 or an HTTP 200 partial batch, so retain completed results and retry only dropped items. Results are mobiles only, not landlines or VoIP, but they are not screened against Do Not Call registries. last_validated_at means active and in service on that date, not consent or permission to contact; the caller remains responsible for applicable calling, messaging, privacy, and DNC compliance. |
| `MOLTSETS_FIND_PERSONAL_EMAIL_HASH_BY_BUSINESS_EMAIL` | Find Personal Email Hash by Business Email | Convert one business email into one sensitive SHA-256-hashed personal-email match key for customer-match and paid-advertising audiences. Hashing does not make this identity data non-sensitive. The endpoint does not accept aliases or batches and never returns multiple hashes. A found result consumes Enrichment tokens; a miss costs no tokens but still counts against the Fair Use request limit and returns HTTP 200 with status=not_found. This endpoint is unavailable on the $397/month and $997/month plans: those plans receive 403 plan_restricted, which retrying or adding tokens does not clear. |
| `MOLTSETS_FIND_US_PERSONAL_EMAIL_BY_LINKEDIN` | Find US Personal Email by LinkedIn | Find a validated sensitive personal email for one US LinkedIn profile or a batch of up to 100. Use this standard selector when provider-ranked highest-confidence selection is not required; use FIND_BEST_US_PERSONAL_EMAIL_BY_LINKEDIN when it is. This billable endpoint is capability-gated: first call GET_ACCOUNT and continue only when personal_email_available is true; otherwise MoltSets returns 403 plan_restricted. Each profile counts against Enrichment Fair Use; found records consume tokens and misses do not. A non-US profile is an HTTP 200 not_found. HTTP 200 may also contain a partial batch, so retain completed results and retry only omitted items. |
| `MOLTSETS_GET_ACCOUNT` | Get Account | Safely read the connected MoltSets account, plan capabilities, token and phone-token balances, and live Fair Use headroom before paid or plan-restricted discovery. This read is free, consumes no tokens, is excluded from enrichment and search Fair Use, and can also verify the API key. |
| `MOLTSETS_GET_BILLING` | Get Billing | Get billing-sensitive plan and subscription dates, token balance, unlimited status, and per-tool token costs. This read-only request is free and excluded from enrichment and search Fair Use; use it to estimate provider token cost before billable discovery calls. |
| `MOLTSETS_GET_USAGE` | Get Usage | Get daily and aggregate API calls, tokens, found-data, no-data, and failed counts for today, week, month, or the billing cycle. This read is free and excluded from enrichment and search Fair Use; it exposes account usage but performs no mutation. |
| `MOLTSETS_REVERSE_LOOKUP_EMAIL` | Reverse Lookup Email | Resolve one email or a batch of up to 100 into a sensitive sparse person and business profile, including company firmographics, LinkedIn URLs, confirmed work email, and personal emails on file. Each address counts against Enrichment Fair Use; found records consume tokens and misses do not. HTTP 200 can represent not_found or a partial batch, so retry only omitted items. |
| `MOLTSETS_SEARCH_COMPANIES` | Search Companies | Search ranked companies by name or domain, firmographics, industry, and location. Returned records consume Search Fair Use records and tokens, while every call counts against the request limit; there is no free count-only mode. Returns one offset page. Free accounts can request at most 10 records per page; eligible paid plans can request up to 25. HTTP 200 status=not_found is a successful miss. |
| `MOLTSETS_SEARCH_PEOPLE` | Search People | Search ranked people and current companies with positive and exclusion filters. This is billable against Search Fair Use: returned records consume search records and tokens, every call counts as a request, exclusions apply before billing, and Free accounts can request at most 10 results per page (25 on eligible plans). Returns one offset page and treats status=not_found as a successful empty result. |

## Supported Triggers

None listed.

## Troubleshooting

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

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

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

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

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

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

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

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

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

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

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

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

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

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

## Complete Code

None listed.

## How to build MoltSets MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/moltsets/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/moltsets/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/moltsets/framework/atomic-agent)

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## Frequently Asked Questions

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

With a standalone MoltSets MCP server, the agents and LLMs can only access a fixed set of MoltSets tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from MoltSets 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 MoltSets tools.

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

Yes, absolutely. You can configure which MoltSets 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 MoltSets data and credentials are handled as safely as possible.

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[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)