# Cyanheads MCP Ts Core (@cyanheads/mcp-ts-core) - AgentBreakWatch Reference

> TL;DR Verdict: Cyanheads MCP Ts Core (`@cyanheads/mcp-ts-core`) is currently at v0.13.15 on NPM (published 2026-10-12), with a 90-day Stability Score of 65/100 (C+) and HIGH schema drift risk across 31 releases in the last 90 days. recent release v0.13.15 (up from v0.13.14) updates MCP Bridge & Transport tool schemas and transport handling (31 releases in last 90d). Pin exact version v0.13.15 in .mcp.json to avoid silent parameter drift.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/cyanheads-mcp-ts-core
- Category Hub: https://agentbreakwatch.vercel.app/c/mcp-bridges-devtools (MCP Bridges, Transports, Inspectors & Developer Tools)
- Package Name: `@cyanheads/mcp-ts-core`
- Registry: NPM (https://www.npmjs.com/package/@cyanheads/mcp-ts-core)
- GitHub Repository: https://github.com/cyanheads/mcp-ts-core
- Vendor: Cyanheads
- Latest Live Version: v0.13.15
- Published Date: 2026-10-12T11:04:02.763Z
- 90-Day Release Count: 31
- Direct Dependencies: 7
- License: Apache-2.0
- Stability Score: 65/100 (Grade C+)
- Schema Drift Risk: HIGH
- Recommended Exact Pin Command: `npx -y @cyanheads/mcp-ts-core@0.13.15`
- Watched Symbols / MCP Tools: mcp-ts-core, tools/list, tools/call
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
recent release v0.13.15 (up from v0.13.14) updates MCP Bridge & Transport tool schemas and transport handling (31 releases in last 90d). Pin exact version v0.13.15 in .mcp.json to avoid silent parameter drift.

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

## Migration Diff: After (Verified v0.13.15 Pattern)
```
"cyanheads-mcp-ts-core": {
  "command": "npx",
  "args": ["-y", "@cyanheads/mcp-ts-core@0.13.15"]
}
```

## Recent Verified Releases
- v0.13.15 (published 2026-10-12) [LATEST]
- v0.13.14 (published 2026-10-08)
- v0.13.13 (published 2026-10-07)
- v0.13.12 (published 2026-10-05)
- v0.13.11 (published 2026-10-03)
- v0.13.10 (published 2026-09-27)