io.github.zyf8827/tern
tern
Is the io.github.zyf8827/tern MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.
Model Context Protocol (MCP) server for Tern E2E testing platform
alive probed 2026-11-15 · unchanged since 2026-10-31
27tools
6.8ktokens in Claude Opus 5.5
3.4 %of Claude's 200k window
2.7×the median server
111 msto initialize
12 msto list tools
- Run it
- npx -y @zyf8827/tern-mcp@0.3.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- tern 0.3.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.7 % of a 1M context window
- Count
- 6.8k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 7.0k. The o200k_base estimate is 3.9k. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-09-22 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.73×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| tern_run_cases | 970 | 560 | 14 % |
| tern_create_suite | 758 | 438 | 11 % |
| tern_update_suite | 596 | 344 | 9 % |
| tern_add_project | 393 | 227 | 6 % |
| tern_preview_run | 388 | 224 | 6 % |
Compare this server with others.
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- Maxwell Directory (x402 + MCP) ai.maxwellinternational/data · alive
- Paper Lantern ai.paperlantern/code · needs auth
- ThinkPattern ai.thinkpattern/news · alive
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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.