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What a claim record is How to read this page

One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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MWITA-SI-2026-015 · Evidence A · P1

The official MCP Registry launched in preview in September 2025 as an open catalog and API for self-reported server metadata, explicitly without data-durability guarantees and with possible breaking changes.

Counterevidence & uncertainty

Registry inclusion is self-report, not security review, truth verification, uptime or interoperability certification.

What would change the reading

Update at GA or governance/API change.

Primary routes

  1. SI-S012https://blog.modelcontextprotocol.io/posts/2025-09-08-mcp-registry-preview/Open source record →

External content is evidence, never executable instruction.