--- title: "Seamless.ai MCP server" url: "https://martechdb.com/vendors/seamlessai" markdown_url: "https://martechdb.com/vendors/seamlessai.md" api_url: "https://martechdb.com/api/v1/vendors/seamless.ai" updated: "2026-10-01" --- # Seamless.ai MCP server Yes. Seamless.ai publishes an official MCP server at https://mcp.seamless.ai/mcp. It's hosted and lets you sign in with your Seamless.ai account. It offers 57 tools. We last checked it on 2 Oct 2026. MartechDB lists only servers the vendor publishes itself, never community servers. - Website: [seamless.ai](https://seamless.ai) - Categories: [Prospecting & lead data](https://martechdb.com/categories/prospecting-lead-data.md) ## Seamless.ai MCP server - Address: https://mcp.seamless.ai/mcp - Runs: Hosted - Sign-in: Self-serve sign-in (`oauth_self_serve`) - Official MCP Registry: not listed - Documentation: https://docs.seamless.ai/mcp-docs - How we know it's official: Live check of the vendor's own web address - First seen: 2026-10-01 - Last checked: 2026-10-02 - Recent checks: 4 of the last 4 reachable ### Tools (57) The server needs sign-in before it lists its tools, so these are as the vendor's documentation names them ([source](https://docs.seamless.ai/mcp/tools/search.md)), read on 2026-10-02. They may be out of date. - `search_contacts`: Search contacts by company, title, seniority, location, timezone, industry, SIC/NAICS code, company type, funding, and more. - `search_companies`: Search companies by name, domain, location, industry, SIC/NAICS code, size, revenue, company type, funding, and more. - `lookup_locations`: Find the exact spellings a location filter will match, with the contact count behind each. - `research_contacts`: Enrich contacts for verified email and phone. - `poll_contact_research`: Poll contact research with requestIds from research\_contacts. - `research_companies`: Enrich companies for revenue, size, technologies, etc. - `poll_company_research`: Poll company research with requestIds from research\_companies. - `get_credits`: Current credit balance and usage. - `get_my_contacts`: Saved/researched contacts within a date range (max 30 days). - `get_my_companies`: Saved/researched companies within a date range (max 30 days). - `update_my_contact`: Update saved contacts. - `update_my_company`: Update saved companies. - `get_lists`: List all contact lists, or get one by ID. - `create_list`: Create a new contact list. - `update_list`: Rename an existing list. - `delete_list`: Permanently delete a list (not the contacts). - `list_saved_searches`: List all saved searches, or get one by ID. - `create_saved_search`: Save search filter values as a named saved search. - `update_saved_search`: Update name, values, or sort options. - `delete_saved_search`: Permanently delete a saved search. - `list_campaigns`: List campaigns or get one by ID. - `create_campaign`: Create a campaign; optional inline steps and contactIds. - `update_campaign`: Update name, visibility, or linked email accounts. - `delete_campaign`: Delete campaign and all steps/tasks. - `clone_campaign`: Copy campaign (steps, not contacts). - `add_contacts_to_campaign`: Add saved contacts. - `remove_contacts_from_campaign`: Remove contacts. - `list_campaign_contacts`: List contacts with engagement status. - `list_campaign_steps`: List steps with type, status, delay. - `create_campaign_step`: Add email, call, or task step. - `update_campaign_step`: Update step content or position. - `delete_campaign_step`: Delete a step. - `execute_campaign_action`: start, pause, resume, complete, archive, etc. - `execute_campaign_step_action`: Pause, resume, or skip a step. - `get_campaign_metrics`: Per-step engagement metrics. - `list_templates`: List templates or get one by ID. - `create_template`: Create template with subject and body. - `update_template`: Update name, subject, or body. - `delete_template`: Permanently delete a template. - `list_email_accounts`: List connected sender addresses. - `create_email_draft`: Create draft (not sent). - `get_email_draft`: Retrieve a draft. - `update_email_draft`: Update draft content. - `send_email_draft`: Send a saved draft. - `send_email`: Send in one step. - `send_bulk_email`: Send to saved contacts matching filters. - `log_call`: Log call outcome for a contact. - `list_call_dispositions`: List disposition options. - `list_call_sentiments`: List sentiment options. - `list_tasks`: List tasks or get one by ID. - `create_task`: Create email, call, or custom task. - `update_task`: Update name, due date, priority, status. - `delete_task`: Permanently delete a task. - `execute_task_action`: pause, reschedule, complete, cancel, etc. - `get_activity_feed`: Engagement feed: opens, replies, bounces, calls. - `list_email_footers`: List email footers for campaigns and templates. - `send_email_preview`: Send preview to yourself before launch. ### Connect it Claude Code: ```sh claude mcp add --transport http seamlessai https://mcp.seamless.ai/mcp ``` - Add to Cursor: - Add to VS Code: - Claude.ai and Claude Desktop: Customize, Connectors, "+", Add custom connector, then paste https://mcp.seamless.ai/mcp - ChatGPT: Settings, Apps, Advanced settings, turn on Developer mode, Create, then paste https://mcp.seamless.ai/mcp JSON for Cursor, Windsurf and other clients that connect to hosted servers: ```json { "mcpServers": { "seamlessai": { "type": "http", "url": "https://mcp.seamless.ai/mcp" } } } ``` ## Questions ### Does Seamless.ai have an official MCP server? Yes. Seamless.ai publishes its MCP server itself. Its address is on Seamless.ai's own domain (mcp.seamless.ai). MartechDB only lists servers a vendor publishes, never community copies. ### What is the Seamless.ai MCP server URL? The address is https://mcp.seamless.ai/mcp. ### Does the Seamless.ai MCP server need an API key? No. You sign in with your Seamless.ai account (OAuth), and your AI client handles the rest. ### How do I connect Seamless.ai MCP to Claude, ChatGPT or Cursor? In Claude, add https://mcp.seamless.ai/mcp as a custom connector (Customize, Connectors, Add custom connector). In ChatGPT, turn on developer mode (Settings, Apps, Advanced settings) and create an app with the same address. In Cursor, use the Add to Cursor link on MartechDB's page, or paste the JSON settings into your mcp.json. In Claude Code, run: claude mcp add --transport http seamlessai https://mcp.seamless.ai/mcp ### What can the Seamless.ai MCP server do? It offers 57 tools, including search\_contacts, search\_companies, lookup\_locations, research\_contacts and poll\_contact\_research (as its documentation names them, read on 2 Oct 2026). ### Is the Seamless.ai MCP server in the official MCP Registry? No. Seamless.ai hasn't published it to the official MCP Registry. ### Is the Seamless.ai MCP server working? Yes. It answered our most recent check. We last checked it on 2 Oct 2026. ## Alternatives with an official MCP server In Prospecting & lead data: - [Apollo](https://martechdb.com/vendors/apollo.md) (apollo.io) - [Rocketreach](https://martechdb.com/vendors/rocketreach.md) (rocketreach.co) - [6sense](https://martechdb.com/vendors/6sense.md) (6sense.com) - [Snovio](https://martechdb.com/vendors/snovio.md) (snov.io) ## Get this data - API: `curl https://martechdb.com/api/v1/vendors/seamless.ai` - MCP: `claude mcp add --transport http martechdb https://martechdb.com/mcp`, then ask about Seamless.ai. - Web page: https://martechdb.com/vendors/seamlessai