# MCP Layer: 13 tools, 7 with an official MCP server > The layer that sits between an AI agent and the hundred SaaS apps a GTM team actually runs on:... 13 tools counted, 7 with an official MCP server and 7 free to start. *Markdown twin of the HTML page at the same path. Same content, no navigation, no styling, no scripts. Links below point at other twins. Site map for machines: [llms.txt](../llms.txt). The whole dataset: [directory.json](../data/directory.json).* --- [Directory](../index.md) / [By category](index.md) / MCP Layer **07 · mcp-infrastructure** ## MCP Layer 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. - **entries in this file**: 13 - **Official MCP**: 7 - **MCP unknown**: 1 - **MCP not applicable**: 4 - **No MCP found**: 1 - **Free to start**: 7 - **Paid, self-serve**: 2 - **Gate unknown**: 4 Source file: 07-mcp-infrastructure.md · content sha256 d05be641445b3c91... · counts reconciled against tools_recount.py at build time. - [The 7 with an MCP server](../lists/mcp-mcp-infrastructure.md) - [Proxy tool calls to SaaS apps](../jobs/proxy-tool-calls-to-saas.md) - [Discover MCP servers](../jobs/discover-mcp-servers.md) - [Read CRM records](../jobs/read-crm-records.md) - [Write CRM records](../jobs/write-crm-records.md) - [Apideck](../tools/apideck.md) apideck.com 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. [Official MCP](../mcp/official.md) · [Free to start](../gates/free.md) - [Composio](../tools/composio.md) composio.dev 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. [Official MCP](../mcp/official.md) · [Free to start](../gates/free.md) - [Model Context Protocol - official servers repo](../tools/model-context-protocol-official-servers-repo.md) github.com 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,... [Official MCP](../mcp/official.md) · [Free to start](../gates/free.md) - [Zapier MCP](../tools/zapier-mcp.md) zapier.com 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. [Official MCP](../mcp/official.md) · [Free to start](../gates/free.md) - [Metorial](../tools/metorial.md) metorial.com 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... [Official MCP](../mcp/official.md) · [Paid, self-serve](../gates/paid.md) - [Pipedream MCP](../tools/pipedream-mcp.md) pipedream.com 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. [Official MCP](../mcp/official.md) · [Paid, self-serve](../gates/paid.md) - [mcp.run / TurboMCP](../tools/mcp-run-turbomcp.md) turbomcp.ai 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). [Official MCP](../mcp/official.md) · [Gate unknown](../gates/unknown.md) - [mcp.so](../tools/mcp-so.md) mcp.so 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. [MCP unknown](../mcp/unknown.md) · [Gate unknown](../gates/unknown.md) - [Claude / Anthropic MCP Connector Directory](../tools/claude-anthropic-mcp-connector-directory.md) claude.com 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... [MCP not applicable](../mcp/n-a.md) · [Free to start](../gates/free.md) - [PulseMCP](../tools/pulsemcp.md) pulsemcp.com 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. [MCP not applicable](../mcp/n-a.md) · [Free to start](../gates/free.md) - [Smithery](../tools/smithery.md) smithery.ai 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... [MCP not applicable](../mcp/n-a.md) · [Free to start](../gates/free.md) - [Glama (MCP directory)](../tools/glama.md) glama.ai 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... [MCP not applicable](../mcp/n-a.md) · [Gate unknown](../gates/unknown.md) - [Klavis AI](../tools/klavis-ai.md) klavis.ai 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"... [No MCP found](../mcp/none-found.md) · [Gate unknown](../gates/unknown.md)