propline-mcp

Listed in the official MCP Registry as io.github.proplineapi/propline-mcp — discoverable from Claude Code, Claude Desktop, and any MCP-aware client.

Model Context Protocol server for the PropLine player props betting odds API. Plug it into Claude Desktop, Claude Code, or any MCP-compatible client and ask natural-language questions about live odds, prop resolution, cross-book +EV, scores, and box-score stats — the model picks the right tool, calls the API, and answers from real data.

No more "I'd need an API for that" deflections from your AI assistant. PropLine MCP turns sports-betting research into a chat.

What you can ask

Once installed, you can prompt the model with things like:

• "What's the +EV on Yankees vs Red Sox tonight across all books?"
• "Pull Aaron Judge's last 20 prop-bet history with hit/miss outcomes."
• "List today's MLB pitcher strikeout props from DraftKings and Pinnacle side by side."
• "Did Nikola Jokic's points prop hit last night? What was the line?"
• "Compare PrizePicks DFS projections to Bovada lines for tonight's NBA slate."
• "What's the first-quarter total on Lakers vs Celtics, and which book has the best Over?"

The model uses these tools transparently:

Hosted endpoint (no install)

The same 27 tools are served over Streamable HTTP at

https://mcp.prop-line.com/mcp

Use it from any remote-capable client — nothing to install, nothing to run.

Auth is per request. Send your PropLine key as Authorization: Bearer <key> (or X-API-Key: <key>, or ?apiKey=<key> for clients that cannot set headers). With no key the endpoint falls back to the shared free demo key — every tool works, paid features are redacted, limits are pooled. Keys are used for the one request and never stored.

Claude Code with your own key:

claude mcp add --transport http propline https://mcp.prop-line.com/mcp \
  --header "Authorization: Bearer YOUR_KEY"

The stdio build below (npx -y propline-mcp) is the same code; pick whichever your client prefers.

Zero-config quick start

No key needed to try it. The server falls back to a shared public demo key, so this just works:

npx -y propline-mcp

Your agent can immediately pull live odds, scores, and stats. The demo key is free-tier and shared — paid features (resolution, +EV, history, exports) return a redacted teaser, and limits are pooled across everyone. For full access and your own limits, set PROPLINE_API_KEY (below). Get a free personal key at prop-line.com.

While the demo key is in use, every tool result carries a second content block noting the pooling and redaction, so the assistant can explain an empty field or a 429 accurately. It disappears the moment you set your own key.

Install (with your own key)

1. Get a PropLine API key

prop-line.com — free tier is 1,000 requests/day, no credit card. Hobby at $9/mo unlocks resolution, history, closing lines and +EV — Pro at $19/mo is that same feature set at 25,000 requests/day.

2. Add to your MCP client

Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "propline": {
      "command": "npx",
      "args": ["-y", "propline-mcp"],
      "env": {
        "PROPLINE_API_KEY": "YOUR_KEY_HERE"
      }
    }
  }
}

Restart Claude Desktop. The hammer icon should show 27 PropLine tools. (Or skip the install and add https://mcp.prop-line.com/mcp as a custom connector — see the hosted endpoint above.)

Claude Code

claude mcp add propline \
  --env PROPLINE_API_KEY=YOUR_KEY \
  -- npx -y propline-mcp

Any other MCP client

Run propline-mcp as a stdio server. Most clients accept a command + env. See the MCP spec for client-specific config.

Configuration

Comparison with the-odds-api

PropLine is API-compatible at the response level (same bookmakers[].markets[].outcomes[] shape) and adds three things the-odds-api doesn't offer at any tier:

1. Prop resolution — every Over/Under graded against the actual box-score stat after the game
2. Cross-book +EV — Pinnacle-anchored no-vig fair lines per book, sorted with +EV plays at the top
3. Webhooks — push delivery on Streaming tier, not pull-only