nodecode-polymarket
Prediction Market Scout: live Polymarket odds, 24h movers, attention signals, a price-alert watchlist and a one-call briefing. A Nodecode rewrite of HATWHY4041/prediction-market-scout by HATWHY4041.
Read-only and keyless: the cell reads Polymarket's two public endpoints (Gamma for markets, CLOB for price history) and nothing else, never places an order and never touches a wallet.
Get it
Tell the agent "add the polymarket cell", or run nodecode add nc://polymarket.
Set it up
Nothing is required: no key, no account, no wallet. Every setting has a default, and the cell runs as it is.
In /settings (or the Settings tab), under polymarket:
| Setting | Default | What it does |
|---|---|---|
min_volume_24h |
5000 |
ignore markets quieter than this over the last 24 hours (USD) |
move_pts |
8 |
a 24h change of at least this many points is a big move |
closing_hours |
72 |
how far ahead "closing soon" looks |
default_limit |
5 |
how many markets each list shows, when the model does not say |
wide_spread |
5 |
a bid/ask gap of at least this many points is wide |
spike_ratio |
3 |
24h volume this many times its daily average is a spike |
band_low, band_high |
25, 75 |
the price band that counts as still undecided |
timeout_seconds |
10 |
one request's ceiling |
watchlist |
polymarket/watchlist.sexp |
where the alert file lives, under the home |
Use it
Ask in words — "what is hot on Polymarket?", "what moved today?", "the odds on a fed rate cut", "watch that market and tell me above 70" — and the model calls one of six tools:
| Tool | Use it for |
|---|---|
polymarket_scan |
trending, movers or closing_soon |
polymarket_search |
find markets by keyword, before the deep dive |
polymarket_market |
one market: every outcome, spread, liquidity, a 7-day price summary, its flags |
polymarket_signals |
markets worth a closer look |
polymarket_watch |
add / remove / list / check alert rules |
polymarket_brief |
one finished markdown briefing |
Or type /polymarket: alone it answers the briefing and opens a panel of the lists, and /polymarket trending, movers, closing, signals, search <words>, market <slug>, watch add <slug> above 70 go straight to one.
The same verbs are Lisp, for eval: (polymarket:scan "movers"), (polymarket:market "slug"), (polymarket:watch "add" :market "slug" :above 70), (polymarket:brief). (help :polymarket) is the manual.
A watchlist check reports only the alerts that are new since the last check, so it is safe to put on a schedule — a cron cell turn whose prompt calls polymarket_watch with action=check, or polymarket_brief for a daily message.
The file under the home is rewritten after every change, so a restart loses nothing, and it can be read or edited by hand.
What the numbers mean: a yes price of 0.62 is about a 62% implied chance — a price, not a fact. Points are percentage points of that price. Flags are prompts to look closer; thin markets show prices nobody would trade at. Informational only, not financial advice.
