# Send Polymarket Trading Setup to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
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      "scope": "source",
      "summary": "Source download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this source.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/polymarket-setup"
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    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/polymarket-setup",
    "downloadUrl": "https://openagent3.xyz/downloads/polymarket-setup",
    "agentUrl": "https://openagent3.xyz/skills/polymarket-setup/agent",
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    "briefUrl": "https://openagent3.xyz/skills/polymarket-setup/agent.md"
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}
```
## Documentation

### Skill: Polymarket Trading Setup

Use this skill when the user wants to:

Set up automated trading on Polymarket
Build a Polymarket trading bot from scratch
Configure wallet, API credentials, or token approvals for Polymarket
Understand how to connect to Polymarket's APIs
Debug issues with an existing Polymarket bot setup

The full technical reference is in GUIDE.md (same directory as this file). Read it before starting.

### What You're Setting Up

Polymarket trading requires four things in order:

A funded proxy wallet with USDC on Polygon
Token approvals (USDC spend approved for exchange contracts)
CLOB API credentials (derived from the wallet, stored in env)
Connectivity verified across all four API surfaces

### Step 1: Check What Already Exists

Before doing anything, check:

Is there an .env file with POLYMARKET_PRIVATE_KEY and POLYMARKET_PROXY_ADDRESS?
Is there a config.json with Polymarket settings?
Is there an existing bot directory to work within?

If credentials already exist, load and validate them rather than starting from scratch.

### Step 2: Environment Setup

If starting fresh, create a .env file with:

POLYMARKET_PRIVATE_KEY=0x...
POLYMARKET_PUBLIC_ADDRESS=0x...     # proxy wallet address
POLYMARKET_PROXY_ADDRESS=0x...      # same as PUBLIC_ADDRESS for type 2
POLYMARKET_SIGNATURE_TYPE=2
POLYMARKET_WEBSOCKET_URL=wss://ws-subscriptions-clob.polymarket.com
POLYMARKET_DATA_API=https://data-api.polymarket.com

The proxy wallet address comes from the user's Polymarket account settings page.

### Step 3: Install Dependencies

pip install "py-clob-client>=0.28.0" httpx "websocket-client>=1.9.0" orjson pandas python-dotenv

Or add to pyproject.toml and run uv sync.

### Step 4: Token Approvals

Via UI (recommended for new users): Deposit USDC through the Polymarket web app — approvals happen automatically.

Headless (server deployment): Use the programmatic approval flow from GUIDE.md Section 4. This requires Polymarket Builder API credentials (separate from CLOB creds).

The four contracts that need approval are listed in GUIDE.md Section 2.

### Step 5: Derive and Persist API Credentials

from py_clob_client.client import ClobClient

client = ClobClient(
    "https://clob.polymarket.com",
    key=os.getenv("POLYMARKET_PRIVATE_KEY"),
    chain_id=137,
    signature_type=int(os.getenv("POLYMARKET_SIGNATURE_TYPE", "2")),
    funder=os.getenv("POLYMARKET_PROXY_ADDRESS"),
)
creds = client.derive_api_key()
# Write credentials to .env — do not log or print them

Add to .env:

POLYMARKET_API_KEY=...
POLYMARKET_API_SECRET=...
POLYMARKET_API_PASSPHRASE=...

On subsequent startups, load from env instead of re-deriving (see GUIDE.md Section 3).

### Step 6: Verify Connectivity

Test each surface in order. Stop and diagnose if any step fails.

import httpx, json

# 1. Gamma API
event = httpx.get("https://gamma-api.polymarket.com/events/slug/bitcoin-price-on-february-11").json()
print(f"Gamma OK: {event.get('title')}")

# 2. CLOB REST - order book
book = httpx.get("https://clob.polymarket.com/book", params={"token_id": "<any_token_id>"}).json()
print(f"CLOB OK: {len(book.get('bids', []))} bids, {len(book.get('asks', []))} asks")

# 3. Data API - positions
positions = httpx.get(
    "https://data-api.polymarket.com/positions",
    params={"user": os.getenv("POLYMARKET_PROXY_ADDRESS")}
).json()
print(f"Data API OK: {len(positions)} open positions")

### Step 7: Place a Test Order

Place a 2-share order at a far-from-market price (very low probability on a real market) to verify the full signing and posting flow without risk of a fill:

from py_clob_client.clob_types import OrderArgs, OrderType
from py_clob_client.order_builder.constants import BUY

# Use a real token ID from Step 6, price far from market
order = OrderArgs(price=0.02, side=BUY, size=2, token_id="<token_id>")
signed = client.create_order(order)
resp = client.post_order(signed, OrderType.FAK)
print(resp)  # Should show success: true

### Key Facts to Remember

Chain: Polygon mainnet (ID: 137)
Currency: USDC (0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359)
Signature type 2 is standard for programmatic trading
Proxy address ≠ signing key address — positions live on proxy, orders signed by EOA
clobTokenIds[0] = YES, clobTokenIds[1] = NO — never mix these up
Minimum order value: $1.00 — size * price >= 1.0
Order size must be integer — always int()
Update positions only on MINED, not MATCHED — MATCHED can fail

### Common First-Time Failures

SymptomLikely Causeinsufficient balanceWrong address used (EOA instead of proxy), or USDC not depositedOrder silently rejectedPrice has too many decimal places — round to 2dp (or 3dp if price < 0.04 or > 0.96)Order value errorsize * price < 1.0WebSocket never sends dataWrong subscription message format, or using array instead of objectPositions always emptyQuerying EOA address instead of proxy wallet addressStale positions after tradeUpdating on MATCHED instead of MINED

### Reference

Full API reference, all code patterns, and detailed explanations: GUIDE.md (same directory).
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: emsin44
- Version: 1.0.6
## Source health
- Status: healthy
- Source download looks usable.
- Yavira can redirect you to the upstream package for this source.
- Health scope: source
- Reason: direct_download_ok
- Checked at: 2026-04-30T16:55:25.780Z
- Expires at: 2026-05-07T16:55:25.780Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/polymarket-setup)
- [Send to Agent page](https://openagent3.xyz/skills/polymarket-setup/agent)
- [JSON manifest](https://openagent3.xyz/skills/polymarket-setup/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/polymarket-setup/agent.md)
- [Download page](https://openagent3.xyz/downloads/polymarket-setup)