The layer that sits between an AI agent and the hundred SaaS apps a GTM team actually runs on: registries that just list servers, and aggregators that host/broker them. The load-bearing question for every entry below is who holds the OAuth tokens when you connect - read `notes` before you wire anything into a production agent.
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A unified API that normalises 200+ SaaS connectors into single data models, exposed as one MCP endpoint covering CRM, accounting, HRIS, ATS, file storage and issue tracking.
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A hosted integration/auth platform that lets AI agents and MCP clients call actions across 1,000+ SaaS apps (HubSpot, Slack, Gmail, GitHub, Notion, Stripe, and others) through Composio-managed OAuth.
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The official reference-implementation repository for MCP, "managed by Anthropic, but built together with the community" - ships a small set of maintained example servers (Everything, Fetch, Filesystem, Git,...
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Zapier's own MCP endpoint, letting Claude, ChatGPT, Cursor, and other MCP clients trigger the same 9,000+ app actions Zapier already exposes to its classic trigger-action Zaps.
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A hosted MCP gateway that gives AI agents/"AI employees" centralized, governed access to a company's SaaS tools (Google Workspace, Microsoft 365, GitHub, Jira, Slack, Teams, Stripe, Salesforce, Zendesk, and...
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Pipedream's existing workflow/integration platform re-exposed as hosted MCP servers, giving an MCP client access to 3,000+ connected apps and 10,000+ pre-built tools via Pipedream Connect.
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An enterprise self-hosted MCP gateway and management platform - a trusted, admin-curated registry plus RBAC-controlled deployment of MCP servers across a team's own infrastructure (K8s, PaaS, VMs).
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A community MCP server/client directory (per its public reputation as one of the earlier MCP catalog sites) - could not independently re-verify current content in this research pass.
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Anthropic's own curated, in-product directory of MCP connectors that Claude users can browse and one-click-connect to, filterable by use case (sales, marketing, data, etc.) and by capability (read / read-write...
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A community-run browsable directory and news hub for the MCP ecosystem (servers, clients, use cases, and a newsletter called "The Agentic Loop") that links out to third-party servers rather than hosting them.
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A registry and distribution marketplace for MCP servers - "publish once, install anywhere" - that indexes and distributes third-party servers rather than hosting them itself, plus an integrated...
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A large searchable registry/catalog of open-source MCP servers (77,000+ listed as of this check), filterable by language, hosting type (remote/local/hybrid), capability, and category; also offers separate...
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Primarily an AI-agent training-data company - it builds "live environments for training AI agents" (long-horizon coding tasks and agentic tool-use scenarios), and separately mentions "production MCP servers"...