io.github.unpkg/unpkg-mcp
UNPKG
Is the UNPKG MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-07.
Live npm and UNPKG data for AI agents: resolution, audits, import maps, malware/CVE checks.
alive probed 2026-11-14 · unchanged since 2026-11-07 · HTTP 200
- Endpoint
- https://mcp.unpkg.com/mcp (streamable-http)
- Host
- mcp.unpkg.com
- Protocol
- 2025-11-25
- Reports itself as
- unpkg-mcp 1.0.0
- Capabilities
- prompts, resources, tools
- Instructions
- 1 577 characters
- Of a 1M window
- 0.4 % of a 1M context window
- Count
- 4.1k tokens in Claude Opus 5.5, exact, measured 2026-11-07. With the Claude Code prefix mcp__…__ on each tool name: 4.3k. The o200k_base estimate is 2.3k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/unpkg/unpkg-mcp
- Website
- https://mcp.unpkg.com
- Registry
- active, updated 2026-11-07 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.76×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| audit_dependencies | 696 | 395 | 17 % |
| estimate_migration_impact | 435 | 247 | 11 % |
| build_file_url | 393 | 223 | 10 % |
| search_packages | 321 | 182 | 8 % |
| shield_domain_packages | 307 | 174 | 7 % |
Compare this server with others.
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Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.
Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.