# B4 Index MCP server

Independent build-vs-buy index: score software categories BUILD/BUY/BRIDGE/BEWARE.

## Links
- Registry page: https://www.getdrio.com/mcp/ai-benroberts-b4-index
- Website: https://benroberts.ai/directory

## Install
- Endpoint: https://b4-index.vercel.app/mcp
- Auth: Auth required by registry metadata

## Setup notes
- Remote header: Authorization (secret)
- The upstream registry signals required auth or secrets.
- Remote endpoint: https://b4-index.vercel.app/mcp
- Header: Authorization

## Tools
- b4_browse (Browse the B4 Index) - Search and filter the B4 Index's 1,600+ independently scored software categories. Browse by keyword, domain, quadrant, or industry. When filtering by industry, returns all vertical categories for that industry PLUS all horizontal categories (which apply to every industry). Endpoint: https://b4-index.vercel.app/mcp
- b4_score (Score a software category) - Score a software category using the B4 Index. Provide a known category name to get pre-computed scores, or provide raw dimension scores (1-5 each) for a custom evaluation. Returns quadrant placement, axes, urgency level, and a concise breakdown. The default result is intentionally lean — set includeEvidence: true to also get the full research trail and source URLs behind each score. Endpoint: https://b4-index.vercel.app/mcp
- b4_audit (Audit a stack) - Analyze a software stack against the B4 Index. Provide a list of tool/category names, and get per-tool scoring plus a portfolio summary with quadrant distribution, BEWARE spend, and priority actions. [B4 Pro — the free tier includes b4_browse and b4_score.] Endpoint: https://b4-index.vercel.app/mcp
- b4_compare (Compare alternatives) - Compare build vs buy for a specific software category. Returns side-by-side analysis with the category's scores, vendor options, AI replacement approach, and action steps for each path. [B4 Pro — the free tier includes b4_browse and b4_score.] Endpoint: https://b4-index.vercel.app/mcp
- b4_recommend (Build-vs-buy recommendation) - Get B4 Index recommendations from a natural language description of a software need or business context. Matches the description to relevant categories and returns top matches with scores, quadrants, and actionable recommendations. [B4 Pro — the free tier includes b4_browse and b4_score.] Endpoint: https://b4-index.vercel.app/mcp

## Resources
Not captured

## Prompts
Not captured

## Metadata
- Owner: ai.benroberts
- Version: 3.3.0
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Jul 3, 2026
- Source: https://registry.modelcontextprotocol.io