How do I install the Polymarket Manual Trade skill?

Run npx skillmds@latest add modbender/polymarket-manual-trade in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Polymarket Manual Trade safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: executes scripts, makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Polymarket Manual Trade?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Polymarket Manual Trade free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Polymarket Manual Trade?

modbender (@modbender) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Polymarket Manual Trade by modbender

Name: Polymarket Manual Trade
Rating: 4.2 (5 reviews)
Author: modbender

Polymarket Manual Trade

Place manual trades on Polymarket by telling your agent what to bet on. Supports FAK (instant fill at market) and GTC (limit order on the book). Pass a Simmer market ID or a full Polymarket URL — the skill auto-imports and handles price discovery. Both FAK and GTC order types are fully tested and working.

modbender Updated Sep 9, 2026 12 repo stars

File contents

Manual Trade Placement

Place trades on Polymarket by telling your AI agent what to bet on. Supports instant FAK fills and GTC limit orders. Works with Simmer market IDs or full Polymarket event URLs.

Usage

Tell your agent:

"Buy YES $10 on [Polymarket URL or market ID]" "Place a GTC limit NO $20 at 0.35 on [market]"

Or run directly:

# FAK — instant fill at best ask price (default)
python3 manual_trade.py --market <market_id_or_url> --side YES --amount 10

# GTC — limit order, sits on book until filled
python3 manual_trade.py --market <market_id_or_url> --side NO --amount 20 --order GTC --price 0.35

# Full Polymarket URL — auto-imports and trades
python3 manual_trade.py \
  --market https://polymarket.com/event/spacex-starship-flight-test-12/will-the-chopsticks-catch-spacex-starship-flight-test-12-superheavy-booster \
  --side YES --amount 10

# Dry run (preview without placing)
python3 manual_trade.py --market <id> --side YES --amount 10 --dry-run

Order Types

Type	Behavior	When to use
FAK (default)	Fills immediately at best ask+0.01. Remainder cancelled.	You want in now at market price
GTC	Limit order sits on CLOB book. Funds locked on placement, fill when market reaches your price	You want a specific price

Arguments

Flag	Description
`--market` / `-m`	Simmer market ID or full Polymarket URL
`--side` / `-s`	`YES` or `NO`
`--amount` / `-a`	Dollar amount (default $10)
`--order` / `-o`	`FAK`, `GTC`, or `FOK` (default FAK)
`--price` / `-p`	Limit price (optional — auto-fetches best ask+0.01 if omitted)
`--venue` / `-v`	`polymarket` or `sim` (default polymarket)
`--dry-run`	Preview without placing

How it Works

Market resolution — if you pass a Polymarket URL, it auto-imports via Simmer's import API and resolves to the correct market
Price discovery — fetches live CLOB order book, uses asks[-1] (best ask) + 0.01 for FAK to guarantee fill
Order placement — signs and submits via simmer-sdk with your wallet key
Confirmation — reports shares filled, cost, and trade ID

Requirements

SIMMER_API_KEY — your Simmer API key
WALLET_PRIVATE_KEY — your Polymarket wallet private key (for on-chain signing)
simmer-sdk >= 0.8.32

Built for Simmer — the AI trading agent platform for Polymarket and Kalshi.

---name: polymarket-manual-tradedescription: Place manual trades on Polymarket by telling your agent what to bet on. Supports FAK (instant fill at market) and GTC (limit order on the book). Pass a Simmer market ID or a full Polymarket URL — the skill auto-imports and handles price discovery. Both FAK and GTC order types are fully tested and working.--- # Manual Trade Placement Place trades on Polymarket by telling your AI agent what to bet on. Supports instant FAK fills and GTC limit orders. Works with Simmer market IDs or full Polymarket event URLs. ## Usage Tell your agent: > "Buy YES $10 on [Polymarket URL or market ID]" > "Place a GTC limit NO $20 at 0.35 on [market]" Or run directly: ```bash # FAK — instant fill at best ask price (default) python3 manual_trade.py --market <market_id_or_url> --side YES --amount 10 # GTC — limit order, sits on book until filled python3 manual_trade.py --market <market_id_or_url> --side NO --amount 20 --order GTC --price 0.35 # Full Polymarket URL — auto-imports and trades python3 manual_trade.py \ --market https://polymarket.com/event/spacex-starship-flight-test-12/will-the-chopsticks-catch-spacex-starship-flight-test-12-superheavy-booster \ --side YES --amount 10 # Dry run (preview without placing) python3 manual_trade.py --market <id> --side YES --amount 10 --dry-run ``` ## Order Types | Type | Behavior | When to use | |------|----------|-------------| | **FAK** (default) | Fills immediately at best ask+0.01. Remainder cancelled. | You want in now at market price | | **GTC** | Limit order sits on CLOB book. Funds locked on placement, fill when market reaches your price | You want a specific price | ## Arguments | Flag | Description | |------|-------------| | `--market` / `-m` | Simmer market ID **or** full Polymarket URL | | `--side` / `-s` | `YES` or `NO` | | `--amount` / `-a` | Dollar amount (default $10) | | `--order` / `-o` | `FAK`, `GTC`, or `FOK` (default FAK) | | `--price` / `-p` | Limit price (optional — auto-fetches best ask+0.01 if omitted) | | `--venue` / `-v` | `polymarket` or `sim` (default polymarket) | | `--dry-run` | Preview without placing | ## How it Works 1. **Market resolution** — if you pass a Polymarket URL, it auto-imports via Simmer's import API and resolves to the correct market 2. **Price discovery** — fetches live CLOB order book, uses `asks[-1]` (best ask) + 0.01 for FAK to guarantee fill 3. **Order placement** — signs and submits via simmer-sdk with your wallet key 4. **Confirmation** — reports shares filled, cost, and trade ID ## Requirements - `SIMMER_API_KEY` — your Simmer API key - `WALLET_PRIVATE_KEY` — your Polymarket wallet private key (for on-chain signing) - `simmer-sdk >= 0.8.32` --- Built for [Simmer](https://www.simmer.markets/) — the AI trading agent platform for Polymarket and Kalshi.

Frequently asked questions