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100
MCP live MCP 2025-11-25 streamable-http

Bellwether

markets.bellwether/prediction-markets

Live Kalshi + Polymarket prediction-market data and cross-venue arbitrage spreads, one schema.

Watch this dependency

Get before/after evidence when observed tools, schemas, authentication access, availability or the endpoint changes.

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Uptime
100.0%
5 direct probes · 30d
Response
192ms
last probe
Tools
3
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://api.bellwether.markets/mcp
Score: 100/100
Handshake verified by our own probe.
why this score
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
3 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
3 items in total; 3 or more earns these points.
pass Describes itself 10/10
94 characters; more than 30 earns these points.

Tools · 3

list_markets

List open prediction markets across Kalshi and Polymarket (normalized).

get_market

Get one normalized market. venue is 'kalshi' or 'polymarket'.

matching_markets

Find the same real-world event on both venues, with the YES price spread.

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "bellwether": {
      "url": "https://api.bellwether.markets/mcp",
      "transport": "streamable-http"
    }
  }
}