"Free Network Graph Visualization Tools (No Account Required)" matching MCP servers:

Enables AI assistants like Claude to read and write contacts, relationships, and interactions in a personal CRM via a graph-based API.

A production-ready MCP server that connects AI assistants to the D-Tools System Integrator platform, enabling natural language management of AV projects, clients, catalogs, tasks, service orders, and purchase orders.

Provides Claude agents with CRM contact lookup, action logging, and prompt cost auditing tools. Includes a Streamlit UI to demo the same tools without an MCP client.

Integrates with HubSpot CRM APIs via the Model Context Protocol, enabling management of contacts, companies, deals, tickets, notes, engagements, workflows, and more through natural language.

Sales intelligence for DACH & EU SMEs — lead scoring, ICP fit, CRM enrichment & writeback.

Connects to Salesforce scratch orgs and allows AI to generate and insert realistic nested test records via natural language descriptions using the Composite Tree REST API.

Enables HG Insights GTM teams to draft and manage outreach, research accounts, look up customer support data, and access CRM, Pylon, Jira, Weflow, and knowledge base tools through Claude Desktop.

Real-time LinkedIn, X (Twitter) and Reddit data for AI agents: profiles, companies, people search, tweets, subreddits, and search. Free start: self-mint a key in one call, no signup, no card.

GoHighLevel MCP server for Claude. 212 tools across 43 modules, including the only programmatic GHL workflow builder (private API, reverse-engineered), funnel + page editor, form builder, pipeline builder, pre-deploy validator, multi-sub-account switching, bulk operations, and full account export. $97 one-time, lifetime updates.

Enables AI-assisted field service management through the Service Fusion API, including job lookup, customer management, dispatch, invoicing, and equipment tracking.

MCP server that lets you talk to your GoHighLevel sub-account in plain English, offering six tools to search contacts, list calendars, check free slots, and book appointments with dry-run safety and explicit error messages.

An open-source Model Context Protocol (MCP) server that connects Claude, ChatGPT, and other AI assistants directly to your Zooza account. Natural language scheduling, attendance tracking, and class management — no dashboard required.

Provides a context graph for GTM teams, centralizing data from multiple tools into unified person and company records, and offers MCP tools to retrieve account context, full entity details, and filtered queries.

Real-time email verification API with syntax, MX, disposable detection, role-based flags, quality score 0-100. Built for agent outreach pipelines with pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Connects AI assistants to GoHighLevel CRM via MCP, enabling full sub-account automation with 269+ tools for contacts, messaging, sales, marketing, and more.

An MCP server for ISP management that enables agents to handle customer onboarding, billing, ticketing, network monitoring, and compliance (RICA/POPIA) via 20 tools.

Live LinkedIn data for AI agents: 44 tools for profiles, companies, jobs, posts, people search, job-change signals and email finding. Hosted remote server (streamable HTTP) - your agent never touches your own LinkedIn account. 300 free credits on signup, no card. Dockerfile in repo bridges stdio clients to the hosted endpoint via mcp-remote.

A minimal multi-sub-account MCP proxy for GoHighLevel that allows listing configured accounts and making authenticated REST API calls on behalf of any account.

Validates customer information completeness by checking caller-provided data against required fields, returning present and missing fields.

MCP server providing business tools for customer support and account management, integrated with SQLite, OpenAI, and Streamlit.