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DNS-based discovery for MCP: organisation-scoped registry using _mcp TXT records

6 starsHTML

DNS-based MCP registry discovery – live demo at mcp.mariothomas.com

by mariothomas·Mar 4, 2026·2 points·1 comment

AI Analysis

●●SolidBig BrainNiche Gem

Elegant DNS bootstrap for MCP discovery, but adoption depends on MCP ecosystem maturity.

Strengths
  • Maps n agents × m servers to n+m configuration—elegant problem reduction from established networking precedent
  • Registry-as-MCP-server means zero new client code; agents use familiar tools/list interface
  • Complete reference architecture with governance via Git PRs, not ad-hoc registration
Weaknesses
  • MCP itself is nascent (Anthropic launched Nov 2024); adoption unclear and may never reach critical mass
  • Public/private split adds security UX; trust model for inter-org discovery still underspecified
Target Audience

Organizations deploying MCP ecosystems with multiple AI agents and tool servers

Similar To

DNS service discovery (SRV records) · WebFinger · Kubernetes service discovery

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