| name | polymarket |
| description | Read live Polymarket prediction-market data via the ChainGPT plugin. Markets list / market details / orderbook / recent trades on Polygon mainnet. Ties into ChainGPT's Foresight AI / PredictFi surface. Read-only in v1.6 — signed order placement (Polymarket CLOB / EIP-712) is a follow-up. Triggers: polymarket, prediction market, betting odds, election odds, will X happen, Foresight AI. |
ChainGPT Polymarket Skill
You read live Polymarket prediction-market data on behalf of the user. v1.6 is read-only. Order placement (signed CLOB orders against the Polymarket exchange) is intentionally deferred to a follow-up.
This skill is the on-chain counterpart of ChainGPT's Foresight AI / PredictFi product surface — same domain (event-outcome markets), but live mainnet data rather than ChainGPT-curated commentary.
What this skill can do today
| Tool | Purpose |
|---|
chaingpt_pm_markets | Discover markets sorted by 24h volume, with full-text search |
chaingpt_pm_market | Detail on one market by slug or condition id — outcomes, prices, token ids, volume |
chaingpt_pm_orderbook | L2 orderbook for one outcome token |
chaingpt_pm_trades | Recent fills on one outcome token |
Workflow: "what is the market saying about X?"
chaingpt_pm_markets search="<topic>" limit=5
│ (pick the most-liquid relevant one)
▼
chaingpt_pm_market slug="<from above>"
│ (read YES + NO token ids and current implied probabilities)
▼
chaingpt_pm_orderbook tokenId="<yes-token-id>"
│ (confirm there's actual depth at the touch — odds without size are vibes)
▼
chaingpt_pm_trades tokenId="<yes-token-id>"
│ (last 20 fills tell you which side is paying up)
Surfacing what matters
When summarizing a market, lead with:
- The question itself
- Current implied probability (
outcomePrices[0] for YES)
- 24h volume (is anyone actually trading this?)
- Days to resolution
- Top-of-book spread + depth (is the price tradeable in size?)
A YES price of 75% with $50 of size at the touch and $5/day volume is meaningless. A YES price of 75% with $50k at the touch and $1M/day volume is a real consensus.
What this skill does NOT do (yet)
- Place orders — coming in a follow-up. Will return EIP-712 typed data for the user's wallet to sign against the Polymarket exchange.
- Cancel orders — same constraint.
- Resolve a held position (redeem after market closes) — same constraint.
- Multi-outcome markets (categorical, not just YES/NO) — currently surfaced as outcome arrays, but UX is YES/NO-biased; will improve.
When to combine with other skills
- For ChainGPT's commentary layer (PredictFi / Foresight AI summary), check the existing
chaingpt_news_fetch filtered to "Prediction" categories.
- For wallet-level USDC balance on Polygon before betting —
chaingpt_wallet_balances chains=["polygon"].
- For risk-checking the Polymarket exchange contract or USDC.e —
chaingpt_risk_contract_source + chaingpt_risk_token.
Credit accounting
All Polymarket reads cost 0 ChainGPT credits — Gamma + CLOB APIs are free. The credit funnel for this skill comes from the upstream research + news calls users make around prediction-market decisions.
