Cross-protocol agent discovery. Search and register AI agents across MCP, A2A, and agents.txt protocols. Directory of 18K+ MCP servers across 6+ registries. Free agents.txt validator and linter included. ## Features - Search 18,000+ MCP servers across 6+ registries - Register and discover AI agents across MCP, A2A, agents.txt, and ACDP protocols - Free agents.txt validator/linter - Protocol-agnostic — works across the fragmented agent ecosystem - Open source: https://github.com/pumanitro/global-chat
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First seen 2 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
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| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Smithery | Global Chat MCP Server | - | 2 Oct 2026 |