MCP

The Index is an MCP server — Streamable HTTP, stateless, no key:

{
  "mcpServers": {
    "publicai-index": { "url": "https://publicai.io/model-index/mcp" }
  }
}

For stdio-only clients: npx -y mcp-remote https://publicai.io/model-index/mcp.

Tools

Tool	Arguments	Returns
describe_index	—	Method, weighting, sources, scopes, catalogs, limits. Call first when unsure which scope to ask for
rank_models	scope, org, family, size, minBoards, reports, limit, openWeights, callable	Ranked rows with scores, coverage and the recommended access channel
get_model	model (id or name)	Everything the index holds on one model, every figure with its source URL

Same read model as the page and the API; every answer carries generatedAt.

Reading answers

• index null and estimatedIndex set → an estimate ✱, never a rank.

• rankedInScope false → placed by report figures only.

• warning present → the scope has no recognised-board measure yet; positions are within a publisher-chosen set.

• access.recommended → OpenRouter id and base URL where listed; alternatives hold the vendor site and open weights.