# Rate-api MCP (@rate-api/mcp) - AgentBreakWatch Reference

> TL;DR Verdict: Rate-api MCP (`@rate-api/mcp`) is currently at v1.1.1 on NPM (published 2026-09-23), with a 90-day Stability Score of 86/100 (B+) and MEDIUM schema drift risk across 2 releases in the last 90 days. Built on MCP SDK (^1.0.0); recent release v1.1.1 (up from v1.1.0) updates Payments & FinTech MCP tool schemas and transport handling (2 releases in last 90d). Pin exact version v1.1.1 in .mcp.json to avoid silent parameter drift.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/rate-api-mcp
- Category Hub: https://agentbreakwatch.vercel.app/c/payments (Payments, Stripe, FinTech & Crypto Wallet MCP Servers)
- Package Name: `@rate-api/mcp`
- Registry: NPM (https://www.npmjs.com/package/@rate-api/mcp)
- GitHub Repository: https://github.com/Vilgar/rate-api-mcp
- Vendor: Rate Api
- Latest Live Version: v1.1.1
- Published Date: 2026-09-23T15:33:27.915Z
- 90-Day Release Count: 2
- Direct Dependencies: 1
- License: MIT
- Stability Score: 86/100 (Grade B+)
- Schema Drift Risk: MEDIUM
- Recommended Exact Pin Command: `npx -y @rate-api/mcp@1.1.1`
- Watched Symbols / MCP Tools: rate-api-mcp, tools/list, tools/call
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
Built on MCP SDK (^1.0.0); recent release v1.1.1 (up from v1.1.0) updates Payments & FinTech MCP tool schemas and transport handling (2 releases in last 90d). Pin exact version v1.1.1 in .mcp.json to avoid silent parameter drift.

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

## Migration Diff: After (Verified v1.1.1 Pattern)
```
"rate-api-mcp": {
  "command": "npx",
  "args": ["-y", "@rate-api/mcp@1.1.1"]
}
```

## Recent Verified Releases
- v1.1.1 (published 2026-09-23) [LATEST]
- v1.1.0 (published 2026-08-04)
- v1.0.4 (published 2026-06-25)
- v1.0.3 (published 2026-06-24)
- v1.0.2 (published 2026-06-17)
- v1.0.0 (published 2026-06-17)