# Modelcontextprotocol Conformance (@modelcontextprotocol/conformance) - AgentBreakWatch Reference

> TL;DR Verdict: 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 last 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.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/modelcontextprotocol-conformance
- Category Hub: https://agentbreakwatch.vercel.app/c/mcp-bridges-devtools (MCP Bridges, Transports, Inspectors & Developer Tools)
- Package Name: `@modelcontextprotocol/conformance`
- Registry: NPM (https://www.npmjs.com/package/@modelcontextprotocol/conformance)
- GitHub Repository: https://github.com/modelcontextprotocol/conformance
- Vendor: Model Context Protocol
- Latest Live Version: v0.1.16
- Published Date: 2026-03-30T20:26:52.731Z
- 90-Day Release Count: 0
- Direct Dependencies: 9
- License: MIT
- Stability Score: 73/100 (Grade C+)
- Schema Drift Risk: HIGH
- Recommended Exact Pin Command: `npx -y @modelcontextprotocol/conformance@0.1.16`
- Watched Symbols / MCP Tools: conformance, tools/list, tools/call
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
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.

## Migration Diff: Before (Deprecated / Unpinned Pattern)
```
"modelcontextprotocol-conformance": {
  "command": "npx",
  "args": ["-y", "@modelcontextprotocol/conformance@latest"]
}
```

## Migration Diff: After (Verified v0.1.16 Pattern)
```
"modelcontextprotocol-conformance": {
  "command": "npx",
  "args": ["-y", "@modelcontextprotocol/conformance@0.1.16"]
}
```

## Recent Verified Releases
- v0.1.16 (published 2026-03-30) [LATEST]
- v0.1.15 (published 2026-02-20)
- v0.1.14 (published 2026-02-13)
- v0.1.13 (published 2026-02-05)
- v0.1.12 (published 2026-01-30)
- v0.1.11 (published 2026-01-23)