Manifold Markets

OpenClaw tool plugin + standalone MCP server for Manifold Markets, wrapping the public REST API at https://api.manifold.markets/v0/.

Features

• OpenClaw plugin — install via openclaw plugins install npm:openclaw-plugin-manifold-markets

• Standalone MCP server — run over stdio with any MCP-compatible client

• 40 tools covering markets, users, groups, bets, comments, leagues, boosts, authenticated reads, and write actions

• TypeBox schemas required by the OpenClaw SDK

• Shared, platform-agnostic HTTP client used by both entry points

• Uniform error shape for upstream, auth, network, timeout, and validation errors

• No response mutation — upstream JSON passes through verbatim

Related MCP server: prediction-market-mcp

Install

npm install

OpenClaw plugin

Build and validate:

npm run plugin:build
npm run plugin:validate

Install in OpenClaw:

openclaw plugins install npm:openclaw-plugin-manifold-markets

Configure the plugin with a Manifold API key if you want to use authenticated endpoints. Read-only tools work without a key.

Standalone MCP server

Set your API key and run the compiled server:

npm run build
MANIFOLD_API_KEY=your-key npm run mcp:start

The server exposes the same 40 manifold_-prefixed tools over stdio.

Development

npm run build       # compile TypeScript
npm test            # run live-API Vitest suite
npm run plugin:validate  # manifest sync + validation

API key

Get your Manifold API key from your Manifold profile → edit → refresh API key.