io.github.scrollDynasty/browsermesh
BrowserMesh
Isolated multi-session Chromium runtime for external MCP clients over stdio.
alive probed 2026-10-19
35tools
≈ 12ktokens, estimate
≈ 5.9 %of Claude's 200k window
8.3×the median server
1.3 sto initialize
194 msto list tools
- Run it
- npx -y browsermesh@0.2.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- browsermesh 0.2.1
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Of a 1M window
- ≈ 1.2 % of a 1M context window, estimate
- Claude count
- The count_tokens endpoint refused the tool schemas: invalid x-api-key. The estimate stands in.
- Repository
- https://github.com/scrollDynasty/multi-agent-browser-mcp
- Registry
- active, updated 2026-08-17 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| browser_action_and_wait | 1 021 | 9 % |
| browser_wait | 808 | 7 % |
| browser_snapshot | 732 | 6 % |
| browser_screenshot | 595 | 5 % |
| browser_click | 551 | 5 % |
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
- This server is in the heaviest 10 % of the registry. Its 5 most expensive tools are 31 % of the cost. Shorter descriptions, fewer optional parameters and fewer tools cut the cost. The command npx mcpcost --url <endpoint> --tools 50 lists every tool with its cost.
- The Anthropic count_tokens endpoint refused the tool schemas (invalid x-api-key). A client that validates schemas can refuse them too.