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Metorial

Open-source MCP and skills gateway

Metorial gives an organization one MCP URL behind its SSO, with 1,000+ integrations, role-based tool access, audit logs and shared skills in Claude, ChatGPT and Cursor. Its GitHub repo describes it as connecting any AI model to 1200+ integrations via MCP, CLI or API.

The integration layer: hundreds of managed tools your agents can call.

Composio handles auth, schemas, observability and reliability for the external SaaS tools an agent uses — 'plumbing for agentic actions' across Slack, GitHub, Salesforce and 250+ other surfaces.

4 pros · 4 cons

A registry and toolchain for MCP servers.

Smithery indexes and helps deploy MCP (Model Context Protocol) servers — a distribution layer for the tool ecosystem agents connect to.

3 pros · 4 cons

Exa

Search API purpose-built for AI agents.

Exa (formerly Metaphor) provides neural search and web-crawl APIs tuned for agent consumption — live, cited knowledge for agents instead of stale training data.

4 pros · 4 cons

Connections

Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.

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Sources

  1. Website
  2. GitHub repo