calc-eval — protobuf3 message count, body discarded MCP Tool
calc-eval
(calc eval) is one of 31 tools on the
protobuf3 message count, body discarded
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call calc-eval from your client
- Claude Code protobuf3 message count, body discarded calc-eval run in your project directory
- Claude Desktop protobuf3 message count, body discarded calc-eval ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor protobuf3 message count, body discarded calc-eval ~/.cursor/mcp.json
- VS Code protobuf3 message count, body discarded calc-eval .vscode/mcp.json
- Zed protobuf3 message count, body discarded calc-eval ~/.config/zed/settings.json
- Windsurf protobuf3 message count, body discarded calc-eval ~/.codeium/windsurf/mcp_config.json
- Cline protobuf3 message count, body discarded calc-eval ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI protobuf3 message count, body discarded calc-eval ~/.gemini/settings.json
- Grok protobuf3 message count, body discarded calc-eval .mcp.json (in your project root)
- ChatGPT protobuf3 message count, body discarded calc-eval Settings → Connectors → Advanced → Developer mode
- Claude.ai protobuf3 message count, body discarded calc-eval Settings → Connectors → Add custom connector
- LangChain protobuf3 message count, body discarded calc-eval pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http proto3-ok https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/proto3-ok/mcpOther tools on this server
- proto3-ok
- utc-time
- timezone
- validate-json
- normalize-url
- inspect-robots
- domain-shape
- citation
- compatibility
- status-catalog
- iana-zones
- web-fetch
- fetch-status
- github-repo-shape
- weather-hint
- memory-key-count
- file-path-ok
- browser-url-ok
- think-steps
- search-query-len
- hn-front-count
- lib-docs-hint
- playwright-url-ok
- figma-url-shape
- jira-key-shape
- geo-hint
- wiki-title-ok
- agent-tool-index
- people-search-index
- agent-ads-index
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.