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MCP Compat Table

Quickly check LLM agent differences in MCP implementations

Problem
LLM agents (Claude, Codex, Grok, Amp, etc.) have inconsistent MCP implementations, causing repeated integration pitfalls for developers. Polytomic created comparison tables out of this widespread pain.
Solution
A searchable, filterable database of MCP compatibility across agents, with community updates. Core features: filter by agent or feature, version tracking, diff highlighting, and update subscriptions.
Users
Developers building MCP servers or clients, AI toolchain teams
MVP
Static site with manually curated compatibility table; filter by agent and feature; JSON API for programmatic access; GitHub PR-based updates
Revenue
Free public table; paid enterprise plan with private query API and SLA
Why now
MCP ecosystem is expanding rapidly without unified standards, and compatibility info is scattered; indie developers can maintain it cheaply via community collaboration

Source discussions · 1

  1. Hacker NewsShow HN: What the Harness? LLM agent inconsistencies in MCP implementation1↑ 0
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