Arena Predictions MCP server

online · 100% uptime

by arena-predictions.com·com.arena-predictions/arena·v0.6.0

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Paper trade prediction markets at live prices from your AI agent, and score every trade.

C68/100grade C

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C68/100

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Adoption

New

218 downloads/wk

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Arena Predictions tools

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How Arena Predictions compares

Against every graded AI and agents MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 68/100; higher than 33% of 4,460 AI and agents servers
Uptime: 100%; of our recent checks; the typical remote AI and agents server answers 100%
Response time: 434 ms; faster than 31% of 2,331 AI and agents servers
Downloads a week: 218; more than 75% of 1,538 AI and agents servers with a package

Release history: 2 versions in the registry since 2026-09-29, latest 2026-10-11, typically one every 12 days.

Install Arena Predictions in Claude Code, Cursor or VS Code

claude mcp add --transport http arena https://arena-predictions.com/mcp

Add to Cursor

Arena Predictions: common questions

Is Arena Predictions MCP server safe?: With care: it is graded C, so read the findings first (68/100). Read the Arena Predictions safety report
How do I install Arena Predictions?: It runs remotely at arena-predictions.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Arena Predictions need an API key?: Yes. The registry entry asks for ARENA_API_KEY.
Is Arena Predictions maintained?: The latest release is v0.6.0.
Is Arena Predictions up?: 100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Arena Predictions?: Servers from other publishers that do the same job: three.ws Portfolio MCP server, Watch Skill MCP server and WaveSpeed MCP server.
How does Arena Predictions compare with other AI and agents MCP servers?: safety score 68/100 (higher than 33% of 4,460 AI and agents servers); uptime 100% (of our recent checks; the typical remote AI and agents server answers 100%); response time 434 ms (faster than 31% of 2,331 AI and agents servers). Full comparison.

Alternatives to Arena Predictions

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Run it through the gateway

With the gateway added, ask your agent for it by name:

agent prompt

call com.arena-predictions/arena → <tool>

Free per call. Metered, capped by your key, logged for reliability.

Add the gateway (gw.mcp.market)

Rating: —
Safety grade: C · 68/100
Stars: –
Downloads/wk: 218
Price: Free
Licence: UNLICENSED
Transport: Remote · mixed
Uptime: 100% · 28/28 checks
Version: 0.6.0
Category: AI and agents
Last release: —

Credentials it needs

ARENA_MCP_ALLOW_TRADESet to 1 to register the paper-trade tools (place_trade, sell_trade, cancel_order, settle_open). Any other value leaves trading off.
ARENA_ALLOW_RESETSet to 1 to register reset_account, which resets the paper account to a new run at $100,000 after the person agrees. The server also refuses until the owner turns resets on in Settings on the web. Any other value leaves it out.
ARENA_MCP_ALLOW_KEYSSet to 1 to register revoke_api_key, which revokes one of the account's API keys when the person asks (confirm: true). Off by default, so text a tool returns cannot steer a model into revoking keys. list_api_keys is always registered. Any other value leaves it out.
ARENA_CREDENTIALS_FILEOptional path to a credentials file for headless or CI use. By default the server reads the credentials that `arena login` stored.
ARENA_API_KEYsecretOptional Arena API key (arena_sk_...) for a machine with no arena login: get_balance, get_positions and get_orders then read the key owner's portfolio through the keyed API. A session always wins there. get_my_eval reads with it when it is set, else with the sign-in. Trade tools still need arena login.
ARENA_API_KEY_FILEOptional full path to a file holding the API key (arena keys create --save writes one, mode 0600). Used when ARENA_API_KEY is not set. With neither set, the server reads ~/.config/arena/arena.key when it holds a key (the file the CLI and the Python SDK read).

Endpoint

https://arena-predictions.com/mcp

streamable-http

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