io.github.nucliweb/webperf-snippets
WebPerf Snippets
Is the WebPerf Snippets MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-14.
Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium
alive probed 2026-11-14
- Run it
- npx -y webperf-snippets@1.16.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- webperf-snippets 1.16.0
- Capabilities
- prompts, resources, tools
- Instructions
- 483 characters
- Of a 1M window
- 0.6 % of a 1M context window
- Count
- 6.3k tokens in Claude Opus 5.5, exact, measured 2026-11-14. With the Claude Code prefix mcp__…__ on each tool name: 6.4k. The o200k_base estimate is 4.0k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/nucliweb/webperf-snippets
- Website
- https://webperf-snippets.net
- Registry
- active, updated 2026-11-14 · registry entry
- Changes
- 10 recorded, reachable in 10 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.60×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| run_workflow | 1 952 | 1 222 | 31 % |
| run_snippet | 1 770 | 1 108 | 28 % |
| open_page | 746 | 467 | 12 % |
| interact | 594 | 372 | 9 % |
| read_results | 390 | 244 | 6 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.nubiia-dev/mcp-newsapi · alive
- io.github.nubiia-dev/mcp-pipedrive · alive
- io.github.nubiia-dev/mcp-quipu · alive
- Dynoxide io.github.nubo-db/dynoxide · alive
- io.github.nugehs/aiglare · alive
- bouncer io.github.nugehs/bouncer · alive
- io.github.nugehs/gate · alive
- repoctx io.github.nugehs/repoctx · alive
Servers that mention snippets.
- Voice Capture ai.voicecapture/voice-capture · needs auth
- ai.smithery/exa-labs-exa-code-mcp · not found
- com.formpaste/formpaste · needs auth
- Formgong com.formgong/mcp · alive
- com.furrowforms/furrow-forms · alive
- The-Snip com.the-snip/mcp · refused
- Oh My Posh Validator dev.ohmyposh/validator · alive
- Web Search API io.github.Br0ski777/web-search · TLS error
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-11-14 08:09 | alive | 701 ms | 9 | 6.3k | 4.0k |
| 2026-11-09 08:50 | alive | 993 ms | 9 | 6.3k | 3.9k |
| 2026-11-07 07:53 | alive | 991 ms | 9 | 4.4k | 2.7k |
| 2026-11-06 08:37 | alive | 600 ms | 9 | 4.4k | 2.7k |
| 2026-11-05 08:39 | alive | 1.0 s | 9 | 4.4k | 2.7k |
| 2026-11-03 08:41 | alive | 969 ms | 9 | 4.3k | 2.7k |
| 2026-11-02 08:24 | alive | 646 ms | 9 | 3.5k | 2.1k |
| 2026-10-30 07:51 | alive | 945 ms | 9 | 3.4k | 2.1k |
| 2026-10-27 06:58 | alive | 944 ms | 8 | 2.6k | 1.6k |
| 2026-10-26 07:05 | alive | 893 ms | 8 | 2.6k | 1.5k |
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.