jecfa_by_number — Jecfa MCP Tool
jecfa_by_number
(jecfa by number) is one of 50 tools on the
Jecfa
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call jecfa_by_number from your client
- Claude Code Jecfa jecfa_by_number run in your project directory
- Claude Desktop Jecfa jecfa_by_number ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Jecfa jecfa_by_number ~/.cursor/mcp.json
- VS Code Jecfa jecfa_by_number .vscode/mcp.json
- Zed Jecfa jecfa_by_number ~/.config/zed/settings.json
- Windsurf Jecfa jecfa_by_number ~/.codeium/windsurf/mcp_config.json
- Cline Jecfa jecfa_by_number ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Jecfa jecfa_by_number ~/.gemini/settings.json
- Grok Jecfa jecfa_by_number .mcp.json (in your project root)
- ChatGPT Jecfa jecfa_by_number Settings → Connectors → Advanced → Developer mode
- Claude.ai Jecfa jecfa_by_number Settings → Connectors → Add custom connector
- LangChain Jecfa jecfa_by_number pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http jecfa https://gateway.pipeworx.io/jecfa/mcp
Other tools on this server
- ask_pipeworx
- ask_pipeworx_beta
- ask_pipeworx_grounded
- search_within
- deep_research
- discover_tools
- resolve_entity
- compare_entities
- subscribe
- unsubscribe
- list_subscriptions
- recent_alerts
- entity_profile
- recent_changes
- validate_claim
- company_facts
- company_register_search
- scan_dependency
- bet_research
- polymarket_arbitrage
- polymarket_edges
- polymarket_kalshi_spread
- polymarket_fill_risk
- polymarket_edge_tracker
- kalshi_weather_edge
- resolution_audit
- resolution_diff
- release_calendar_markets
- prediction_calibration
- updown_venue_compare
- updown_divergence_rate
- archive_evidence
- archive_compare
- research_row
- classify_row
- pipeworx_trending
- suggest_questions
- generate_llms_txt
- ai_visibility_check
- scan_competitor_ai_presence
- pipeworx_feedback
- remember
- recall
- forget
- jecfa_search
- jecfa_chemical
- jecfa_by_functional_class
- jecfa_functional_classes
- jecfa_recent_evaluations
This list was read from the server itself, by connecting to it and calling tools/list on 14 November 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.