Tool integration and MCP: 13 companies ranked

Companies selling platforms that connect AI agents to business apps and APIs, including MCP hosting and gateways, in SalesBook agentic-sector rank order. Every company has a profile with dated public sources and a live check of its agent interfaces (MCP, llms.txt). Ranks use the published SalesBook method; tell us who is missing.

• Merge#4Unified API and Agent Handler that give software companies' AI agents authenticated, scoped access to third-party tools, with audit logs.
  MCP connector: nollms.txt: yes
• StackOne#11Integration infrastructure for AI agents: 560+ connectors and 35,000+ actions with managed auth, an MCP gateway and prompt-injection defense.
  MCP connector: yesllms.txt: yes
• Nango#19Open-source, code-first integration platform that connects products and AI agents to 1,000+ APIs with auth, syncs, webhooks and MCP tools.
  MCP connector: yesllms.txt: yes
• Paragon#25Integration infrastructure for SaaS and AI products: ActionKit lets agents act in users' third-party apps, plus managed sync and workflows.
  MCP connector: nollms.txt: no
• Composio#28Tool-calling and integration platform that connects AI agents to 1,000+ business apps with managed auth, sold to developers and enterprises.
  MCP connector: yesllms.txt: yes
• Apify#42Platform of serverless web-data 'Actors' with a hosted MCP server that lets AI agents discover and run scraping and automation tools.
  MCP connector: yesllms.txt: yes
• Mintive (formerly MintMCP)#45Hosts and manages MCP servers for organizations through an MCP gateway with access control and credentials, plus a monitor for coding agents.
  MCP connector: nollms.txt: no
• Arcade.dev#67Actions runtime that lets enterprise AI agents call tools with user-level authorization and governance; acquired the Smithery MCP registry.
  MCP connector: yesllms.txt: yes
• Speakeasy#71AI control plane for enterprises built around an MCP gateway, with agent identity, agent security and agent observability.
  MCP connector: nollms.txt: no
• Obot AI#83Open-source MCP gateway and AI control plane for hosting MCP servers behind one endpoint with SSO, role-scoped access and audit logs.
  MCP connector: nollms.txt: yes
• Ampersand#112Developer-first integration infrastructure so software products and AI agents can read and write deep integrations with CRMs, ERPs and similar systems.
  MCP connector: nollms.txt: no
• Glama#120MCP server registry, inspector and gateway with logging, access control and credential management for teams.
  MCP connector: yesllms.txt: yes
• Klavis AI#123MCP environments and agentic tool-use data for frontier AI labs, from a team that built open-source hosted MCP servers.
  MCP connector: yesllms.txt: yes