alpha-arcade-interaction

alpha-arcade-interaction is a skill for Claude Code, Codex from GoPlausible/algorand-mcp. It costs 71 tokens per session (2,402 once invoked), scanned A, original, MIT.

A tool for trading binary or multi-choice prediction markets on Algorand, a blockchain network. It supports markets where participants trade shares tied to possible event outcomes, using USDC, a dollar-linked cryptocurrency.

In plain words
What is it for?
Use it to inspect markets and order books, place or manage orders, manage positions, split or merge shares, and claim winnings on Alpha Arcade.
Why use it?
It brings market browsing, order and position management, and settlement actions into the agent's workflow, while distinguishing read-only access from trading access.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it to inspect markets and order books, place or manage orders, manage positions, split or merge shares, and claim winnings on Alpha Arcade.

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Install with agentmods
npx agentmods add skills/goplausible/algorand-mcp/alpha-arcade-interaction
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add GoPlausible/algorand-mcp --skill alpha-arcade-interaction
Clone the repo
git clone --depth 1 https://github.com/GoPlausible/algorand-mcp

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for alpha-arcade-interaction

README.md
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Your own site
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agentmods 80×15 button for alpha-arcade-interaction

Your own site · 80×15
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Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,402 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00071 $0.02402
Opus 5 $0.00036 $0.01201
Sonnet 5 $0.00014 $0.00480
Haiku 4.5 $0.00007 $0.00240

Measured 11d ago against content hash 8a61b706196c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

alpha-arcade-interaction scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/alpha-arcade-interaction/SKILL.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Alpha Arcade — Prediction Markets on Algorand

Interact with Alpha Arcade prediction markets via the Alpha Arcade MCP server (15 tools across read-only and trading categories).

Key Characteristics

  • On-chain prediction markets — all orders and settlements happen on Algorand
  • Binary and multi-choice markets — bet on YES/NO outcomes or choose from multiple options
  • USDC-denominated — all collateral and payouts in USDC (ASA 31566704)
  • Microunit inputs — all prices and quantities in tool inputs use microunits (1,000,000 = $1.00 or 1 share)
  • Formatted outputs — read tools return human-readable strings like "$0.50" and "2.50 shares"

Setup

Alpha Arcade tools are built into the Algorand MCP server. Trading uses the local agent wallet (SQLite-backed) — no separate mnemonic needed.

Variable Required Description
ALPHA_API_KEY For reward markets Alpha Arcade API key
ALPHA_API_BASE_URL No API base URL (default: https://platform.alphaarcade.com/api)

Read-only tools work without a wallet. Trading tools require an active wallet account (see wallet_get_info).

Units & Price Format

All prices and quantities in tool inputs use microunits: 1,000,000 = $1.00 or 1 share.

Human value Microunit value
$0.50 500,000
$0.05 slippage 50,000
1 share 1,000,000
30 shares 30,000,000

Tool outputs from read tools (get_orderbook, get_open_orders, get_positions) return pre-formatted strings. Write tools accept raw microunit integers.

API probability fields are microunits, NOT percentages

Critical: The yesProb and noProb fields returned by market data (e.g., get_market, get_live_markets) are in microunits (0–1,000,000), NOT percentages (0–100).

yesProb value Meaning Display price
862,500 86.25% chance $0.86
500,000 50% chance $0.50
50,000 5% chance $0.05

To convert for display: price = yesProb / 1,000,000 → e.g., 862500 / 1000000 = $0.86

Read the full file on GitHub · 181 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 181 lines · 71 tokens per session scan A 8a61b706196c

Subscribe to this mod's changes

alpha-arcade-interaction is a skill published in the GitHub repository GoPlausible/algorand-mcp (44 stars, last pushed 1mo ago), licensed MIT. It adds 71 tokens to every session and 2,402 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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