io.github.mrfentmen/censys-mcp
censys-mcp
Query Censys Search: host lookup by IP and host search with the Censys query language.
alive probed 2026-10-21
2tools
≈ 157tokens, estimate
≈ <0.1 %of Claude's 200k window
0.1×the median server
316 msto initialize
11 msto list tools
- Run it
- npx -y censys-mcp@1.0.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- censys-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- ≈ <0.1 % of a 1M context window, estimate
- Repository
- https://github.com/mrfentmen/premium-mcps
- Registry
- active, updated 2026-10-17 · registry entry
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| search_hosts | 89 | 57 % |
| get_host | 68 | 43 % |
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.