io.github.cyligence-karim/killerskills
KillerSkills
Is the KillerSkills MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-13.
Security verdicts for agent skills and MCP servers, from sandbox runs, before you install them.
alive probed 2026-11-15 · unchanged since 2026-11-13
- Run it
- npx -y vet-skills@0.10.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- killerskills 0.10.0
- Capabilities
- tools
- Instructions
- 116 characters
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 516 tokens in Claude Opus 5.5, exact, measured 2026-10-31. With the Claude Code prefix mcp__…__ on each tool name: 534. The o200k_base estimate is 299. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyligence-karim/vet-skills
- Website
- https://killerskills.ai/docs/cli#mcp
- Registry
- active, updated 2026-11-13 · 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 |
|---|---|---|---|
| check_skill | 345 | 200 | 67 % |
| search_skills | 171 | 99 | 33 % |
Compare this server with others.
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Other registry entries on npmjs.com, the ones next to this name; all of them.
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- Lumi Verdict: check an x402 seller before paying io.github.cypher-osiris/lumi-verdict-mcp · crashed on start
- Cytoscape Desktop MCP io.github.cytoscape/cytoscape-desktop-mcp-bridge · error
- DataFinder MCP io.github.cyuanxv/datafinder-mcp · crashed on start
- Feishu MCP Self-hosted io.github.cyuanxv/feishu-mcp-standalone · needs args
Servers that mention security or verdicts.
- Arketo ai.arketo/arketo · needs auth
- ai.geodesiclabs/governance-platform · alive
- Helixar Security ai.helixar/mcp · needs auth
- ai.kernora/agent-sec · alive
- IntoDNS.ai DNS & Email Security Scanner ai.intodns/scanner · alive
- SOAR Record Gateway ai.lateos/soar-record-gateway · needs auth
- Occludra — MCP Gateway (AI Security Gateway) ai.occludra/mcp-gateway · server error
- Overwing ai.overwing/mcp · alive
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.