# Arena Predictions (com.arena-predictions/arena): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/com.arena-predictions%2Farena/versions/latest)
- Connected to: https://arena-predictions.com/mcp
- Homepage: https://arena-predictions.com/docs/mcp
- Scoring rules: v2
- Tools: 30
- Average: 53.0 / 100 (Cloudy)
- Near-identical pairs: 0

This page shows how Arena Predictions (com.arena-predictions/arena)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

- Minor: 30 tools. Above 25, models start to tell tools apart less well.

## Tools

- `get_game`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: market_type, full.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument full is unclear.
- `get_instrument`: 43 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: full.
  - Minor: The meaning of the boolean argument full is unclear.
  - Minor: Required identifiers whose description does not say where the value comes from: ref. Name the tool or the place that returns it, or models look it up first.
- `get_trader`: 43 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: picks.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument picks is unclear.
- `list_games`: 43 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: full.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument full is unclear.
- `screen_markets`: 43 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: min_volume, max_spread_cents, price_min_cents, price_max_cents, sort, full.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument full is unclear.
- `get_history`: 45 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: window, full.
  - Minor: String arguments with no constraint or example: until, month.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument full is unclear.
- `search_markets`: 45 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Major: Arguments without a description: query, full.
  - Minor: String arguments with no constraint or example: query.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: The meaning of the boolean argument full is unclear.
- `list_markets`: 46 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: sport, full.
  - Minor: String arguments with no constraint or example: sport.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument full is unclear.
- `get_market`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: full.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument full is unclear.
- `get_leaderboard`: 48 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: full.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument full is unclear.
- `get_orders`: 48 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: limit.
  - Minor: No `required` list, so every argument is optional.
- `get_positions`: 48 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: full.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument live is unclear.
  - Minor: The meaning of the boolean argument full is unclear.
- `get_eval_board`: 49 / 100
  - Minor: Arguments without a description: kind, cohort.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The description mentions none of its 3 or more arguments.
- `list_perps`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `get_orderbook`: 50 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `get_perp_mark`: 52 / 100
  - Major: Says nothing about when to use it, or when not to.
- `get_price_history`: 52 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Required identifiers whose description does not say where the value comes from: ref. Name the tool or the place that returns it, or models look it up first.
- `get_track_record`: 52 / 100
  - Minor: Arguments without a description: verify.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument verify is unclear.
- `get_my_stats`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Arguments without a description: by.
  - Minor: String arguments with no constraint or example: until, month.
  - Minor: No `required` list, so every argument is optional.
- `get_privacy`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
- `cancel_order`: 60 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: String arguments with no constraint or example: order_id.
  - Minor: The meaning of the boolean argument live is unclear.
  - Minor: The meaning of the boolean argument confirm is unclear.
  - Minor: Required identifiers whose description does not say where the value comes from: order_id. Name the tool or the place that returns it, or models look it up first.
- `get_balance`: 60 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does.
- `resolve_market`: 60 / 100
  - Minor: Arguments without a description: full.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: The meaning of the boolean argument full is unclear.
- `set_privacy`: 60 / 100
  - Minor: The meaning of the boolean argument private is unclear.
- `get_cross_venue_quotes`: 63 / 100
  - Minor: Arguments without a description: full.
  - Minor: The meaning of the boolean argument full is unclear.
  - Minor: Required identifiers whose description does not say where the value comes from: ref. Name the tool or the place that returns it, or models look it up first.
- `settle_open`: 63 / 100
  - Minor: The meaning of the boolean argument confirm is unclear.
- `get_perp_history`: 64 / 100
  - Major: Says nothing about when to use it, or when not to.
- `find_price_gaps`: 66 / 100
  - Minor: Arguments without a description: full.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument us_only is unclear.
  - Minor: The meaning of the boolean argument full is unclear.
- `sell_trade`: 67 / 100
  - Minor: Arguments without a description: ticker, side, contracts.
  - Minor: String arguments with no constraint or example: trade_id, ticker, token_id.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument dry_run is unclear.
- `place_trade`: 69 / 100
  - Minor: Arguments without a description: venues.
  - Minor: No `required` list, so every argument is optional.
  - Minor: The meaning of the boolean argument dry_run is unclear.

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