Parlay

parlay-run/parlay-mcp

A read-only aggregator that pulls live odds from Polymarket, Kalshi, and Limitless, plus Manifold sentiment data kept architecturally separate. Six tools let you search markets by keyword, generate topic briefs, browse trending contracts, compare the same event across venues, surface cross-venue price discrepancies, and inspect individual platforms. Every response includes data freshness timestamps, liquidity flags, settlement risk warnings, and explicit disclaimers. No trading, no API keys, no position management. Runs as a hosted service over streamable HTTP. Useful when you need to compare prediction market signals across venues without opening five browser tabs or want an LLM to synthesize what the crowd thinks will happen next week.

GitHub stars: 5
tools: 6
transport: HTTP
last updated: May 21, 2026

View on GitHub

Install

From registry metadata

$ npx add-mcp https://mcp.parlay.run/mcp --name parlay

Run in your terminal. add-mcp asks which agents to add it to (Claude Code, Codex, Cursor and more). Add -g to install it for every project.

Review the command, arguments and environment values before installing. MCP servers run with your local permissions.

Other ways

Claude Code

$ claude mcp add --transport http parlay https://mcp.parlay.run/mcp

Run in your terminal. Add --scope user to make it available in every project.

Tools

Verified live · 6 tools

Verified live against the running server on Nov 6, 2026.

search_marketsSearch live prediction markets and event contracts across Polymarket, Kalshi, Limitless (real-money) and Manifold (sentiment). Use for queries on election odds, political markets, Fed rate decisions, crypto prices, sports outcomes, geopolitics, and other binary markets with cr...3 params

Search live prediction markets and event contracts across Polymarket, Kalshi, Limitless (real-money) and Manifold (sentiment). Use for queries on election odds, political markets, Fed rate decisions, crypto prices, sports outcomes, geopolitics, and other binary markets with cr...

Parameters* required

limitnumber

default: 20

query*string

real_money_onlyboolean

default: false

discover_marketsBrowse trending, high-volume, fast-moving, or high-disagreement prediction markets across Polymarket, Kalshi, Limitless, and Manifold. Use when the user wants to explore what's happening — "what's hot on Polymarket today", "show me biggest political markets", "what events are...4 params

Browse trending, high-volume, fast-moving, or high-disagreement prediction markets across Polymarket, Kalshi, Limitless, and Manifold. Use when the user wants to explore what's happening — "what's hot on Polymarket today", "show me biggest political markets", "what events are...

Parameters* required

categorystring

limitnumber

default: 20

real_money_onlyboolean

default: false

sort_bystring

one of volume · newest · ending_soondefault: volume

compare_marketsCompare the same event contract across Polymarket, Kalshi, and Limitless side-by-side: probability, liquidity, settlement rules, and venue type. Use when the user wants to know "what's the spread between Polymarket and Kalshi on X" or "which venue has better liquidity for Y"....2 params

Compare the same event contract across Polymarket, Kalshi, and Limitless side-by-side: probability, liquidity, settlement rules, and venue type. Use when the user wants to know "what's the spread between Polymarket and Kalshi on X" or "which venue has better liquidity for Y"....

Parameters* required

limitnumber

default: 5

query*string

scan_discrepanciesSurface cross-venue price discrepancies between Polymarket, Kalshi, and Limitless as a discovery feed for price discovery and divergence detection. Default threshold is 0.5% spread, below typical round-trip fees — most results are informational, not tradable arbitrage. Raise `...4 params

Surface cross-venue price discrepancies between Polymarket, Kalshi, and Limitless as a discovery feed for price discovery and divergence detection. Default threshold is 0.5% spread, below typical round-trip fees — most results are informational, not tradable arbitrage. Raise `...

Parameters* required

limitnumber

default: 20

min_spreadnumber

Minimum price gap to report (0.005 = 0.5%, 0.03 = 3 percentage points). Default 0.005 surfaces price discovery signals, most of which are below typical 4% round-trip fees and therefore informationa...default: 0.005

min_volumenumber

Minimum 24h USD volume on the thinner side of each pair. Pairs where at least one venue has missing volume data are kept but tagged with risk_flag 'volume_unconfirmed'. Set to 0 to disable.default: 1000

querystring

Optional post-filter on event titles by topic keywords (e.g. 'crypto', 'election', 'fed'). This filters the discovery feed locally — it is not a topic search and may return zero results when today'...

market_briefGenerate a synthesized brief for a topic, combining real-money signals from Polymarket, Kalshi, and Limitless with Manifold community sentiment. Use for analytical queries like "what do markets think about the 2028 election", "odds on a Fed rate cut", or "how is crypto priced...4 params

Generate a synthesized brief for a topic, combining real-money signals from Polymarket, Kalshi, and Limitless with Manifold community sentiment. Use for analytical queries like "what do markets think about the 2028 election", "odds on a Fed rate cut", or "how is crypto priced...

Parameters* required

limitnumber

default: 10

min_volumenumber

Minimum 24h USD volume per market. Real-money markets with missing volume data are kept but tagged with risk_flag 'volume_unconfirmed'. Sentiment markets (Manifold) are exempt — their volume is den...default: 500

real_money_onlyboolean

default: false

topic*string

inspect_platformInspect a single named venue. Returns available capabilities, market data for the query, and metadata quality flags. Use when the user explicitly names a venue — "show me Polymarket markets on AI", "what's on Kalshi for Q4 inflation", "Manifold markets about geopolitics". For...3 params

Inspect a single named venue. Returns available capabilities, market data for the query, and metadata quality flags. Use when the user explicitly names a venue — "show me Polymarket markets on AI", "what's on Kalshi for Q4 inflation", "Manifold markets about geopolitics". For...

Parameters* required

limitnumber

default: 20

platform*string

one of polymarket · kalshi · opinion · limitless · smarkets · myriad

query*string

Readme

Parlay — Prediction Market MCP Server

The AI-native intelligence layer for prediction markets.

Parlay cross-venue spread comparison across Polymarket and Kalshi

Parlay is a hosted MCP server for searching, comparing, and briefing prediction markets from AI assistants. It is a PMXT-backed aggregator over Polymarket, Kalshi, and Limitless, with Manifold treated separately as a sentiment-only signal. This repository is the public bundle and connection reference for the hosted Parlay service at https://mcp.parlay.run/mcp; it does not contain the MCP server implementation.

What it does

View the full README on GitHub

Details

Repository: github.com/parlay-run/parlay-mcp
Website: parlay.run
Transport: HTTP
Registry: MCP registry, active
Tools verified: Nov 6, 2026