What is monitor-polymarket?

A monitoring skill for Polymarket and Kalshi, websites where people trade contracts on the outcomes of future events. It compares prices, trading volume, comments, and recent readings from saved watchlists.

Checking selected prediction markets, tracking 24-hour price and volume changes, reviewing fresh comments, and sending high-conviction alerts.

It filters routine market changes and highlights new, potentially important movements instead of sending a raw table of prices. It also avoids repeating alerts already reported recently.

monitor-polymarket — Skill for Claude Code and Codex by aaronjmars

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 aaronjmars/aeon-agent --skill monitor-polymarket

Clone the repo

git clone --depth 1 https://github.com/aaronjmars/aeon-agent

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/monitor-polymarket.svg)](https://agentmods.dev/skills/aaronjmars/aeon-agent/monitor-polymarket)

Your own site

<a href="https://agentmods.dev/skills/aaronjmars/aeon-agent/monitor-polymarket"><img src="https://agentmods.dev/badge/skills/aaronjmars/aeon-agent/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 100% copy Near-identical to another mod 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.

Model	Per session	Once 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 2026-09-07, 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

This is a copy

100% identical to monitor-polymarket — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

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.

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 aaronjmars/aeon-agent (11 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). It is 100% identical to monitor-polymarket, differing in 0 lines, and is treated as a copy.

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