B4 Index
Independent build-vs-buy index: score software categories BUILD/BUY/BRIDGE/BEWARE.
| Endpoint | https://b4-index.vercel.app/mcp (streamable-http) |
|---|---|
| Registry version | 3.3.0 |
| Now | 5 tools · grade F (26) · pin ts_527492489734b8259e32657be7564e13 · protocol 2025-06-18 |
| First / last listed | 2026-11-05 01:01 UTC / 2026-11-05 01:01 UTC |
| Grade over time | 2026-11-05: F (26), 5 tools |
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Tools: b4_browse b4_score b4_audit b4_compare b4_recommend
b4_browse | For browsing, filtering, or finding the index's name for something. Example: {"query": "warehouse picking", "domain": "Supply Chain"}. Search and filter every independently scored software category in the B4 Index. 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 indu params: org, query, domain, quadrant, industry, cursor, includeVendors, limit |
b4_score | For one exact category name or id. Example: {"category": "Expense Management", "org": "medium"}. 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. Structured output carries the full picture: the banded verdict, the five dimension scores, both axes, urgency, vendors at your acce params: org, category, includeEvidence, scores |
b4_audit | For a list of vendor or product names (a stack), with an optional description per row. Example: {"tools": ["Salesforce", {"name": "Lydia Voice", "description": "voice-directed picking in the warehouse"}]}. Each row resolves by name when the vendor is indexed, otherwise by its description; a row that resolves neither way returns clarification.needed with the question to ask the user. Returns per-to params: org, tools* |
b4_compare | For one exact category name or id when the question is the build path against the buy path. Example: {"category": "Order Management (OMS)"}. Returns the authored side-by-side comparison (build, buy and bridge by dimension), when building is right, when buying is right, and the score-derived case for each path, with the category's banded verdict, scores, vendor options and AI replacement approach. params: org, category* |
b4_recommend | For a need or problem in words, not a vendor name. Example: {"description": "we need to route warehouse pickers by voice"}. 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 each carrying the full category payload. Structured output carries the full picture: the banded verd params: org, capability, exclusions, description* |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.