@modelcontextprotocol/conformance

Modelcontextprotocol Conformance by Model Context Protocol

A framework for testing MCP (Model Context Protocol) client and server implementations against the specification.

Live Registry Versionv0.1.16Previous: v0.1.15Published 2026-03-30

Stability Grade

C+ (73/100)

90-Day Velocity

0 releases

Stable release cadence

Dependencies

9 direct

NPM manifest

License

MIT

Verified on NPM

Recommended Exact Pin: npx -y @modelcontextprotocol/conformance@0.1.16

NPM Registry ->GitHub Repo ->

TL;DR Verdict & Quick Citation Summary (2026-10-24)Source: AgentBreakWatch Live NPM Index

Modelcontextprotocol Conformance (@modelcontextprotocol/conformance) is currently at v0.1.16 on NPM (published 2026-03-30), with a 90-day stability score of 73/100 (C+) and HIGH schema drift risk across 0 releases in the past 90 days. Built on MCP SDK (^1.27.1); recent release v0.1.16 (up from v0.1.15) updates MCP DevTool / Inspector tool schemas and transport handling (0 releases in last 90d). Pin exact version v0.1.16 in .mcp.json to avoid silent parameter drift. Production teams should pin npx -y @modelcontextprotocol/conformance@0.1.16 rather than using unpinned @latest tags.

Breaking Changes & Tool Schema Drift Analysis

Built on MCP SDK (^1.27.1); recent release v0.1.16 (up from v0.1.15) updates MCP DevTool / Inspector tool schemas and transport handling (0 releases in last 90d). Pin exact version v0.1.16 in .mcp.json to avoid silent parameter drift.

Watched Exports / MCP Tool Signatures:

conformancetools/listtools/call

Before (Deprecated / Unpinned Pattern)

"modelcontextprotocol-conformance": {
  "command": "npx",
  "args": ["-y", "@modelcontextprotocol/conformance@latest"]
}

After (Verified v0.1.16 Pattern)

"modelcontextprotocol-conformance": {
  "command": "npx",
  "args": ["-y", "@modelcontextprotocol/conformance@0.1.16"]
}

Frequently Asked Questions: @modelcontextprotocol/conformance

What is the latest version of @modelcontextprotocol/conformance on NPM?

As of 2026-10-24, the latest stable version of @modelcontextprotocol/conformance (Modelcontextprotocol Conformance by Model Context Protocol) on NPM is v0.1.16, published on 2026-03-30. It has shipped 0 releases in the last 90 days.

Does @modelcontextprotocol/conformance v0.1.16 have breaking changes or MCP schema drift risk?

@modelcontextprotocol/conformance currently carries a HIGH schema drift risk rating with a Stability Score of 73/100 (Grade C+). Built on MCP SDK (^1.27.1); recent release v0.1.16 (up from v0.1.15) updates MCP DevTool / Inspector tool schemas and transport handling (0 releases in last 90d). Pin exact version v0.1.16 in .mcp.json to avoid silent parameter drift.

How do I safely pin @modelcontextprotocol/conformance in production?

Avoid unpinned @latest tags in production agent configs. Pin the exact verified version using `npx -y @modelcontextprotocol/conformance@0.1.16` and monitor conformance, tools/list, tools/call for parameter or schema changes.

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