monitor-polymarket

monitor-polymarket is a skill for Claude Code, Codex from aeonfun/aeon. It costs 34 tokens per session (4,869 once invoked), scanned A, original, MIT.

A monitoring workflow for Polymarket and Kalshi, online prediction markets where people trade contracts tied to future events. It reports 24-hour price and volume changes, new comments, and high-conviction alerts from selected markets.

In plain words
What is it for?
Use it to monitor both platforms or one of them, inspect watchlists, track a specific event, and receive alerts about notable price, activity, or discussion changes.
Why use it?
It filters repeated updates and focuses attention on new market movers and reasons to form a view. Comparing with recent readings makes changes easier to distinguish from yesterday's information.

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 monitor both platforms or one of them, inspect watchlists…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aeonfun/aeon/monitor-polymarket
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 aeonfun/aeon --skill monitor-polymarket
Clone the repo
git clone --depth 1 https://github.com/aeonfun/aeon

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 monitor-polymarket

README.md
[![agentmods](https://agentmods.dev/badge/skills/aeonfun/aeon/monitor-polymarket.svg)](https://agentmods.dev/skills/aeonfun/aeon/monitor-polymarket)
Your own site
<a href="https://agentmods.dev/skills/aeonfun/aeon/monitor-polymarket"><img src="https://agentmods.dev/badge/skills/aeonfun/aeon/monitor-polymarket.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,869 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00034 $0.04869
Opus 5 $0.00017 $0.02434
Sonnet 5 $0.00007 $0.00974
Haiku 4.5 $0.00003 $0.00487

Measured 2d ago against content hash ad10d8de324c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

monitor-polymarket scanned grade A with 1 finding 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 2d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s "https://gamma-api.polymarket.com/events?slug=$SLUG&limit=1"
Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/monitor-polymarket/SKILL.md · 356 lines

How it starts

The opening of the file, as written. The whole thing — 356 lines — stays where its author put it; the contents beside it link to each section on GitHub.

${var} — Platform selector with an optional single-market override:

  • empty ("") — run both platforms from their watchlists.
  • polymarket — run Polymarket's whole watchlist (skills/monitor-polymarket/watchlist-polymarket.md).
  • kalshi — run Kalshi's whole watchlist (skills/monitor-polymarket/watchlist-kalshi.md).
  • polymarket:<event-slug> — one ad-hoc Polymarket event (e.g. polymarket:us-x-iran-ceasefire-by).
  • kalshi:<event-ticker> — one ad-hoc Kalshi event (e.g. kalshi:KXGDP-26Q2).

Read memory/MEMORY.md for context. Read the last 2 days of memory/logs/ to compare against previous readings and flag new movers (not repeats of yesterday's news).

Why this skill exists

A table of prices isn't useful. An operator reading this notification wants to answer: "is there a market worth forming a view on right now, and why?" Every rule below exists to push output toward that question — suppress noise, rank by decision value, and demand one line of reasoning per alert. This skill covers two venues — Polymarket (crypto-native, CLOB + comments) and Kalshi (regulated, liquidity-weighted signals) — and dispatches to the branch(es) the selector asks for.

Dispatch

Parse ${var} into a platform choice and an optional single-market override, then run the matching branch(es).

PLATFORM="both"   # both | polymarket | kalshi
SINGLE=""         # optional single event slug (Polymarket) or ticker (Kalshi)

case "${var}" in
  "")            PLATFORM="both" ;;
  polymarket)   PLATFORM="polymarket" ;;
  kalshi)       PLATFORM="kalshi" ;;
  polymarket:*) PLATFORM="polymarket"; SINGLE="${var#polymarket:}" ;;
  kalshi:*)     PLATFORM="kalshi";     SINGLE="${var#kalshi:}" ;;
  *)            # unrecognised prefix — don't guess a venue; fall back to both watchlists
                PLATFORM="both"; SINGLE=""
                echo "unrecognised selector '${var}' — running both watchlists" ;;
esac
  • PLATFORM=both → run the Polymarket branch and the Kalshi branch, each from its own watchlist, then emit a combined notification.
  • PLATFORM=polymarket → run only the Polymarket branch (whole watchlist, or SINGLE if set).
  • PLATFORM=kalshi → run only the Kalshi branch (whole watchlist, or SINGLE if set).

Read the full file on GitHub · 356 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 356 lines · 34 tokens per session scan A ad10d8de324c

Subscribe to this mod's changes

monitor-polymarket is a skill published in the GitHub repository aeonfun/aeon (716 stars, last pushed yesterday), licensed MIT. It adds 34 tokens to every session and 4,869 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.

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