io.github.keyvwin/mcp
b2bsearch: B2B contacts and account signals
Is the b2bsearch MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-01.
B2B contacts and account signals on Apify: new hires, email format, lookalikes, decision makers.
alive probed 2026-11-14 · unchanged since 2026-11-01
- Run it
- npx -y @b2bsearch/mcp@0.1.3 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- b2bsearch 0.1.3
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.4 % of a 1M context window
- Count
- 3.7k tokens in Claude Opus 5.5, exact, measured 2026-11-01. With the Claude Code prefix mcp__…__ on each tool name: 3.8k. The o200k_base estimate is 2.2k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/keyvwin/mcp
- Registry
- active, updated 2026-10-31 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.71×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| search_people | 958 | 561 | 26 % |
| find_new_hires | 814 | 477 | 22 % |
| find_lookalike_companies | 589 | 345 | 16 % |
| find_decision_makers | 560 | 328 | 15 % |
| company_email_format | 415 | 243 | 11 % |
Compare this server with others, or with the servers that share its tool set.
Same tool set as 1 other server
These registry entries have the same tool names and the same schema sizes.
- io.github.b2bsearch/mcp npmjs.com
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- Trackly CLI io.github.kevinastuhuaman/trackly · alive
- io.github.kevindarstNBB/board-and-stable-mcp · not found
- io.github.kevint-cerebras/cerebras-code-mcp · alive
- Muse Image io.github.kevintsai1202/muse-image · alive
- Emerald io.github.kfireliyahu/emerald · alive
- io.github.khadinakbaronline/telegram-channel-scraper-mcp · not found
- RAGMap io.github.khalidsaidi/ragmap · alive
- io.github.khalomsky/syke · alive
Servers that mention b2bsearch or contacts.
- CommSync ai.commsync/commsync · needs auth
- ConnectMachine ai.connectmachine/connectmachine · needs auth
- DataMerge MCP ai.datamerge/mcp · alive
- ai.enginy/mcp · needs auth
- Fiber AI ai.fiber/mcp · alive
- ai.fintent/signals · needs auth
- MailJunky ai.mailjunky/mcp · needs auth
- LinkDeal ai.linkdeal.www/mcp · needs auth
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.