arena

v0.5.1

Paper trade prediction markets at live prices from Claude Code: the Arena MCP server and the arena-paper-trading skill.

Claude Code2 Skills1 MCP serverstdio

By ZBGC LLCLicense: MIT0 GitHub starsUpdated 1 hour ago

Directory evidence

Runtimes: Claude Code
Parsed components: 3 skill or MCP entries
Source updated: Oct 2, 2026
Manifest status: Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install arena for Claude Code

Installs for the current user

claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install arena@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually

$ git clone https://github.com/ZBGC/arena-agent-kit

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

Plugin files

arena/

├── .claude-plugin/plugin.json
├── skills/arena/SKILL.md
├── skills/arena-paper-trading/SKILL.md
└── .mcp.json

Included Skills2

arenaskills/arena/SKILL.md

Use Arena when quoting prediction markets, paper trading, or reading eval boards from Cursor.

arena-paper-tradingskills/arena-paper-trading/SKILL.md

Test or improve a prediction market trading bot or AI agent on paper at live prices, with a record that is private by default. Uses Arena Predictions through the `arena` CLI or the Arena MCP server, with virtual money only. Use when the user wants to forward-test a bot or strategy, look up games and permanent instrument ids, turn a bet in words such as "chiefs ml" into a market and side, read a market, its order book or price chart, compare the same bet's price on Kalshi, Novig and Polymarket or the gaps between them, screen markets, check their Arena balance, positions, limit orders, history or stats, price a trade, place, sell or cancel a paper trade they asked for, or read the Arena leaderboard.

MCP servers1

arenastdio

command: npx
args: -y arena-mcp-server

Plugin manifests1

.claude-plugin/plugin.json

{
  "name": "arena",
  "displayName": "Arena Predictions",
  "version": "0.5.1",
  "description": "Paper trade prediction markets at live prices from Claude Code: the Arena MCP server and the arena-paper-trading skill.",
  "author": {
    "name": "ZBGC LLC",
    "email": "[email protected]"
  },
  "homepage": "https://arena-predictions.com/agents",
  "keywords": [
    "prediction-markets",
    "paper-trading",
    "trading-bot",
    "forward-testing",
    "mcp",
    "mcp-server",
    "ai-agents",
    "cli"
  ],
  "license": "MIT"
}

Browse the “prediction-markets” tag →

storyflo-codex-plugin

by Storyflo

Codex plugin wrapping storyflo's hosted MCP server — an agentic newsroom for narrated briefings, the news-versus-prediction-market Divergence Index, the declassified archive, and vertical intelligence.

Codex1 Skill1 MCP serverHTTP+SSE (legacy)

1.1kUpdated yesterday

howp

by Alexander Kurganov

Personal probability dashboard: interests → measurable questions → prediction-market probabilities (Polymarket, Manifold) → a local Markdown dashboard of what became more or less likely. The skill reads this package's binaries.json, refuses any platform it does not name, downloads and sha256-verifies the released archive for one it does, caches it under the user's home, and drives one binary, hp; which targets are published, and what an archive holds, come from that file rather than from this sentence. No API keys and no accounts. Deterministic work is hp's — extracting a probability out of a venue's raw response, the append-only history, move detection and the rendered page — and everything else is the agent's: hp opens no socket and reads no clock, so the agent fetches each market body with its own tools, under the permission flow its client already has, and passes the moment in. Every judgement is the agent's too, and no part of this package invokes a model. The hosts hp builds requests from are declared under extensions below — a statement rather than a request, since no client is documented to read that field as network permission.

Claude CodeAgent Plugins1 Skill

1Updated last week

For maintainers

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[arena on Agent Plugins Marketplace](https://pluginsmp.com/plugins/arena)