The most complete GTM MCP published so far. It covers the whole motion rather than a slice of it: search, enrich, write contacts, build lists, create sequences and send one-off email, all through the same OAuth connection.
- Free to connect. Enrichment actions draw on your Apollo credits.
- Apollo prohibits model training on data pulled through MCP. Turn training off in your AI client before connecting.
- Clients: Claude, ChatGPT, Cursor, Perplexity
Two separate servers doing two different jobs. The remote one gives an AI client read and write access to contacts, deals and engagements. The local one drives the developer platform CLI for scaffolding and deploys.
- Included with a HubSpot account, free tier included.
- Both servers require the latest developer platform version.
- Clients: Claude, Cursor, Copilot
Two tools by default, web_search_exa and web_fetch_exa, with an advanced search tool and a multi-step Agent tool you enable by appending them to the URL. The Agent tool is the one that does list building and enrichment.
- Usage-based. $10 of free credits a month, then per search.
- The Agent tool is metered and needs auth. The two default search tools do not.
- Clients: Claude, Cursor, Windsurf, Zed
Every LeadMagic plan ships the MCP server alongside the API and the terminal client, with no separate charge or tier gate. It exposes the same 15+ enrichment endpoints the REST API does, drawing on the same credit pool.
- No extra cost. Draws on your plan credits at the same per-operation rates.
- Needs an API key in the client config, so it is not a one-click OAuth connect.
- Clients: Claude, Cursor
Published as one third of Attio's developer platform, next to the REST API and the SDK. Because Attio lets you define custom objects, the MCP surface reflects your schema rather than a fixed contact-and-deal model.
- Included with an Attio workspace.
- Tool surface follows your workspace schema, so two installs can expose different objects.
- Clients: Claude, Cursor
Find, enrich and run Functions
Writes
Clay's server runs its find-and-enrich tools, and the Functions a workspace admin switches on for MCP, on behalf of a signed-in user. Admins set a credit budget for every rep who connects and can give reps MCP-only access, with no view of the tables, keys or workflows behind it.
- Runs on the workspace's credits under a budget the admin sets. Credit controls are on Launch, Growth and Enterprise.
- Every rep who connects has to be a member of the Clay workspace, and admins choose which AI clients may connect at all.
- Clients: Claude, ChatGPT, Microsoft 365 Copilot, Glean
Company and people search and counts, dictionaries for industries, codes, countries, regions, departments, seniorities and technologies, and your account's compliance and intent settings. Compliance is enforced by the server: do-not-call numbers are masked and geo-restricted records excluded.
- One search token per record returned and one credit per person returned with contact details, as in the API. Counts and dictionaries are free.
- Data retrieved through it may not be used to train AI models, so turn training off in the client first.
- Clients: Claude, ChatGPT, Codex, Cursor
Expert, structured and list tools
Writes
Plain-language expert tools that answer a question or build a Crunchbase search, structured tools for exact lookups and searches, and list tools that save results back to Crunchbase. Answers draw on company, funding, investor, people, acquisition and prediction data, as far as the signed-in user's access reaches.
- Bought per workspace and assigned per user as an MCP seat, through the account team. Data-returning calls spend Crunchbase data tokens.
- Dynamic Client Registration is not supported, so a client needs CIMD support or a directory listing to connect.
- Clients: Claude, ChatGPT, VS Code Copilot, Perplexity
Four tools: list campaigns, list a campaign's lead lists, find a lead by email or LinkedIn URL, and upload up to 1,000 LinkedIn profiles to a campaign as a new lead list. The first three only read; the upload creates a list.
- On the Pro and Advanced plans, with the same API key as the Open API.
- Claude on the web and ChatGPT cannot connect yet, because they need an OAuth flow Dripify has not shipped.
- Clients: Claude Desktop, Codex CLI, Cursor, VS Code
Lists, campaign drafts, inbox
Writes
One connection covers every LinkedIn account you manage in Expandi. An assistant builds lead lists, drafts campaigns, works the inbox and explains why outreach stalled, inside the same daily limits and warm-up as the rest of Expandi.
- Needs an active Expandi subscription, and works from the first day of the 7-day trial.
- It cannot activate a campaign or edit a running one, and nothing sends without your approval.
- Clients: Claude, ChatGPT, Cursor, n8n
Search, scrape, parse and more
Read only
Three ways in: keyless, for Search, Scrape and Parse within daily limits; a browser sign-in; or an API key as a bearer token. Signing in and a key reach the same full tool surface on your team's plan.
- Keyless use is free within daily limits. Signed-in or keyed use runs on your team's plan.
- The keyless tier covers Search, Scrape and Parse only.
- Clients: Claude, ChatGPT, Codex, Claude Code
Search, enrich and export
Read only
Search people and companies in plain language, enrich them with emails and phone numbers one at a time or as a batch, and export the results as CSV or JSON without leaving the chat. The assistant is meant to show results and confirm before it spends anything on enrichment.
- A search preview of the first 10 results is free. Exports cost 0.25 credits a contact or company, and enrichment is charged as in the API.
- If a client skips the confirmation step, enrichment can run without asking, so ask for the results first.
- Clients: Claude, ChatGPT, Manus, Claude Code
The Hunter API, leads included
Writes
Discover, Domain Search, the Email Finder and Verifier, enrichment and leads management, so an assistant can find a contact, verify the address and save it to a Hunter list in one conversation. The key goes in an X-API-Key header, or a client that supports it can use the one-click OAuth flow instead.
- Included in all Hunter plans at no extra cost. Your existing plan and credits apply.
- An unauthenticated call is refused, so there is no keyless way to try it.
- Clients: Claude, ChatGPT, Gemini, Cursor
The full V2 API, one tool per endpoint
Writes
Every Instantly V2 endpoint is a tool, generated from the same spec as the API reference: accounts and warmup, campaigns and subsequences, leads and lists, the inbox, analytics, webhooks, enrichment and workspace settings. The scopes on the API key decide what an agent can reach.
- Uses an API v2 key, and the API is on every Instantly plan.
- A client without custom headers takes the key in the URL path, which puts it in any config file you share.
- Clients: Claude Desktop, Cursor, Windsurf
Find people and companies, check that someone still works where you think, and pull titles and verified contact details in plain language. Claude, ChatGPT and Codex connect over OAuth through Lusha's listing; any other client sends the API key in an x-api-key header.
- Any Lusha plan can connect. Calls draw on the account's credit pool, and failed lookups are not charged.
- The header must be x-api-key in lower case; a Bearer header fails.
- Clients: Claude, ChatGPT, Codex, Cursor
Pipedrive's own server reads and writes deals, persons, organizations, leads, products, notes and activities, converts leads into deals and reads pipeline stages. It inherits the user's permissions, and every change lands in the change log.
- On every Pipedrive plan. Usage comes out of the plan's token budget, and more tokens can be bought.
- Claude may not load every tool by default; a connector setting loads them all.
- Clients: ChatGPT, Claude
Eight tools: person and company enrichment, bulk enrichment of up to 25 at a time, people and company search, filter suggestions and an account check. A search returns contact previews with their verification status, and the credits for the real values are only spent on enrichment.
- Credits as in the API: 1 for an email, 10 for email and mobile, 1 a page of search. Suggestions and the account check are free.
- The local server needs Node.js 18 and your API key in the client config.
- Clients: Claude, Claude Code, Cursor, Windsurf
Seventy tools across sequences, contacts, the inbox, tasks and the Jason AI SDR, 31 annotated read-only and 39 as changes. A scoped personal API key limits an agent to the areas you grant; an OAuth connection gets the full catalog.
- Free for Reply.io users, per Reply's own repository. 120 requests a minute, 3,000 an hour and 150,000 a week.
- Team and Organization API keys are not accepted; it is a single-user connection.
- Clients: Claude Code, Claude Desktop, ChatGPT, Cursor
Records, Apex, Flows, prompt templates
Writes
An admin configures a server once in the org and any MCP client then connects per user: read, create, update and delete records under field-level security and sharing rules, and expose Apex actions, Flows, named queries and Prompt Builder templates as tools. The Salesforce DX MCP Server, in beta, covers developer work.
- Meant for customers with Flex Credits, and server usage may be billed against them.
- An admin has to switch the feature on in the org before anyone can connect.
- Clients: Claude, ChatGPT, Cursor, Postman
Thirteen read-only tools over accounts, people, opportunities, users and conversations, recordings included. It follows Salesloft's permission model, so a user only sees through it what they can already see in Salesloft.
- Included with Salesloft's Agent packages, such as Account Agent or Coaching Agent. Calls count against the API rate limits.
- In beta, read only, and it cannot search cadences or their performance. An admin has to switch it on first.
- Clients: Claude Desktop, ChatGPT
Campaign stats, diagnostics, lead data
Read only
Campaign insights, deliverability and health diagnostics, and lead, account and performance data inside Claude Desktop, reached through the mcp-remote bridge with the API key in the URL. Smartlead's guide lists reads and diagnostics rather than write actions.
- Needs a Smartlead API key, and the API starts on the Pro plan.
- SSE only, and Smartlead says Claude on the web is not supported yet.
- Clients: Claude Desktop
tavily-search for real-time web search with filters and tavily-extract to pull content from pages, through a remote server that takes the API key in the URL or signs you in over OAuth, with a keyless option as well.
- Runs on your Tavily API key, or keyless.
- Tavily describes the mcp-remote bridge for older clients as an experimental stop-gap.
- Clients: Claude Code, Claude Desktop, Cursor, OpenAI
TheirStack MCP
Jobs, companies, lists, webhooks
Writes
Search job postings and companies, read a company's technographics and buying intents, and manage company lists, saved searches and webhooks. Tools that change something are flagged so the client can ask before running them; read-only ones run without asking.
- Each tool call spends API credits at the same rate as the equivalent API call. The catalog tools are free.
- TheirStack recommends an API key for automations, because most MCP clients do not refresh OAuth tokens cleanly.
- Clients: Claude Code, Claude, Cursor, VS Code
ZB
ZeroBounce MCP
Validation, finder, scoring, account
Read only
The official open-source server, installed from npm and run on your own machine. It validates single addresses or batches, uploads CSV files for bulk validation and AI scoring, finds addresses by name and domain, checks recent activity, and reports credits and API usage.
- Free to install and connect. Validations and every other action spend ZeroBounce credits.
- Needs Node.js 18 or newer, and the API key sits in the local client config.
- Clients: Claude Desktop, Cursor, VS Code, Zed