langchain-prediction-markets

langchain-prediction-markets

LangChain tools for real-time prediction market data. Drop-in tools that give any LangChain agent world awareness from 30,000+ markets.

Install

npm install langchain-prediction-markets @langchain/core

Quick Start

import { ChatOpenAI } from '@langchain/openai'
import { createReactAgent } from '@langchain/langgraph/prebuilt'
import { predictionMarketTools } from 'langchain-prediction-markets'

const agent = createReactAgent({
  llm: new ChatOpenAI({ model: 'gpt-4o' }),
  tools: predictionMarketTools(),
})

const result = await agent.invoke({
  messages: [{ role: 'user', content: 'What are the key geopolitical risks right now?' }],
})

Tools

Tool	Description
get_world_state	Full world state (~800 tokens) with index, movers, edges, divergences
get_uncertainty_index	Four-signal uncertainty index (0-100)
get_market_edges	Actionable mispricings with reasoning and causal path
get_market_detail	Single market detail with optional orderbook
get_world_changes	Incremental changes since a given time

Individual Tools

import { getWorldState, getUncertaintyIndex, getMarketEdges } from 'langchain-prediction-markets'
// Use individually in any LangChain agent

License

MIT — SimpleFunctions