polymarket

polymarket is a skill for Claude Code, Codex from Outsharp/shipp-skills. It costs 51 tokens per session (9,847 once invoked), scanned A, original, Apache-2.0.

A connector for Polymarket, a prediction market where people trade positions on possible real-world outcomes. It covers markets, prices, trading, portfolios, live data streams, and transfers on the Polygon blockchain.

In plain words
What is it for?
Use it to find markets, read prices, place orders, manage positions, stream updates, and handle bridging or withdrawals.
Why use it?
It gives an agent access to Polymarket data and account actions through its APIs instead of requiring separate integrations for each task.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/outsharp/shipp-skills/polymarket
Any agent
npx skills add Outsharp/shipp-skills --skill polymarket
Clone the repo
git clone --depth 1 https://github.com/Outsharp/shipp-skills

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 polymarket

README.md
[![agentmods](https://agentmods.dev/badge/skills/outsharp/shipp-skills/polymarket.svg)](https://agentmods.dev/skills/outsharp/shipp-skills/polymarket)
Your own site
<a href="https://agentmods.dev/skills/outsharp/shipp-skills/polymarket"><img src="https://agentmods.dev/badge/skills/outsharp/shipp-skills/polymarket.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,847 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
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 $0.00051 $0.09847
Opus 5 $0.00026 $0.04924
Sonnet 5 $0.00010 $0.01969
Haiku 4.5 $0.00005 $0.00985

Measured 4d ago against content hash 750614868189, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 4d 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.

- Bash(curl:*)
skills/polymarket/SKILL.md · 784 lines

How it starts

The opening of the file, as written. The whole thing — 784 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Polymarket API

Polymarket is a decentralized prediction market where users trade on the outcomes of real-world events. It uses a hybrid-decentralized Central Limit Order Book (CLOB) with off-chain matching and on-chain settlement on Polygon.

Check this skill and the official documentation FREQUENTLY. The canonical machine-readable index of all docs lives at:

https://docs.polymarket.com/llms.txt

Always consult llms.txt to discover every available page before building. It is the single source of truth for endpoint references, SDK docs, WebSocket channels, builder program details, and getting-started guides.


Key Concepts (Glossary)

Term Definition
Event A collection of related markets grouped under a common topic (e.g., "2024 US Presidential Election").
Market A single tradeable binary outcome within an event. Each market has Yes and No sides, a condition ID, question ID, and pair of token IDs.
Token Represents a position in a specific outcome (Yes or No). Prices range from 0.00 to 1.00. Winning tokens redeem for $1 USDCe. Also called outcome token.
Token ID The unique identifier for a specific outcome token. Required when placing orders or querying prices.
Condition ID On-chain identifier for a market's resolution condition. Used in CTF operations and as the market identifier in the CLOB.
Question ID Identifier linking a market to its resolution oracle (UMA).
Slug Human-readable URL identifier for a market or event (e.g., polymarket.com/event/[slug]).
CLOB Central Limit Order Book — Polymarket's off-chain order matching system. Orders are matched here before on-chain settlement.
Tick Size Minimum price increment for a market. Usually 0.01 (1 cent) or 0.001 (0.1 cent).
Fill When an order is matched and executed. Orders can be partially or fully filled.
Negative Risk (NegRisk) A multi-outcome event where only one outcome can resolve Yes. Requires negRisk: true in order parameters.
CTF Conditional Token Framework — the on-chain smart contracts that manage outcome tokens.
Split Convert USDCe into a complete set of outcome tokens (one Yes + one No).
Merge Convert a complete set of outcome tokens back into USDCe.
Redeem After resolution, exchange winning tokens for $1 USDCe each.
USDCe Bridged USDC on Polygon — the stablecoin used as collateral on Polymarket.
Funder Address The wallet address that holds funds and tokens for trading.
Signature Type Identifies wallet type: 0 = EOA, 1 = Magic Link proxy (POLY_PROXY), 2 = Gnosis Safe proxy.

Read the full file on GitHub · 784 lines

Files

What ships with it

1 file 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. 4d ago First seen · 784 lines · 51 tokens per session scan A 750614868189

Subscribe to this mod's changes

polymarket is a skill published in the GitHub repository Outsharp/shipp-skills (4 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 51 tokens to every session and 9,847 once invoked, about $0.0003 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 2026-08-31.

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