Diamond Projections in Claude

Claude can call Diamond Projections directly through its MCP connector. Use it to fetch DraftKings MLB projections, build optimal lineups, and explain matchups inside any Claude conversation.

Add the connector

  1. In Claude, go to Settings → Connectors → Add custom.
  2. Paste the MCP URL: https://diamonddfs.com/api/mcp
  3. Authorize with your Diamond Projections account. Free trial signup takes 10 seconds.

Why Claude users

Claude's long-context reasoning pairs well with Diamond's explain_projection and explain_lineup tools — perfect for deep matchup analysis, stack research, and projection auditing.

FAQ

How do I add Diamond Projections to Claude?
In Claude, open Settings → Connectors → Add custom and paste https://diamonddfs.com/api/mcp. Authorize with your Diamond Projections account.
Do I need an API key, or does OAuth work?
OAuth 2.1 with PKCE is the default flow for Claude. The connector does Dynamic Client Registration automatically, opens our consent screen, and stores rotating tokens. If you'd rather use a static credential, mint an API key at https://diamonddfs.com/settings/api-keys and paste it as Authorization: Bearer dp_live_….
Which MCP tools are exposed?
get_slates, get_player_pool, get_player_projection, build_optimal_lineup, swap_player, list_weight_presets, apply_weight_preset, customize_weights, explain_projection, and explain_lineup. Full schema at https://diamonddfs.com/api/v1/openapi.json.
What is a slateId and why does the connector ask for one?
DraftKings runs multiple slates per day (Main, Showdown, Early-only, etc.). slateId = DraftKings draft-group ID. Always call get_slates first, then pass the right slateId to build_optimal_lineup. slateDate alone is ambiguous on multi-slate days and the API returns ambiguous_slate with the candidate IDs.
Is there a free trial?
Yes — sign up at https://diamonddfs.com/signup. No credit card and no invite code.
Which sports are supported?
DraftKings MLB DFS is live. NFL and NBA are planned.
What does it cost?
Free trial, then paid tiers for full pool access and unlimited optimizer / MCP calls. See https://diamonddfs.com for current pricing.
How do I revoke Claude's access?
Remove the connector in Claude → Settings → Connectors, or revoke the OAuth token at POST https://diamonddfs.com/api/oauth/revoke. API keys can be deleted at https://diamonddfs.com/settings/api-keys.