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Polymarket Liquidity-Shift Alerts API (edge402)
x402
Polymarket Liquidity-Shift Alerts API (edge402) is a paid API for AI agents from x402.edge402.xyz, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).
Returns Polymarket prediction markets with statistically significant (>2σ) liquidity, volume, or spread anomalies in the last hour, plus Solana DLMM position opens by high-win-rate tracked wallets.
Price / call$0.01
Success—
StatusDown
How this service works
Pay-per-request JSON API surfacing (1) Polymarket markets with >2σ liquidity, volume, or spread moves in the last hour, and (2) Solana DLMM position opens by tracked high-WR wallets (read from ~/tail). Both endpoints charge $0.01 USDC per call via the x402 protocol on Base L2 (PayAI facilitator), with a 3 free calls/day per IP free tier, then 1 first-call-free trial per IP per day. Use ?payment_required=1 or X-Edge-Probe: 1 to force the 402 path for discovery crawlers.
Output
A JSON object containing an 'as_of' timestamp, alert count, a 1-hour window flag, the 2σ threshold used, and an array of alert objects each with: market slug, market ID, question text, alert category (e.g. volume_spike_up), severity score, liquidity z-score, current liquidity in USD, and 24h volume in USD.
Example use cases
Example prompt
“Pull the latest Polymarket liquidity-shift alerts from the last hour — I want to see any markets with a z-score above 2 and at least $10,000 in liquidity that are showing volume spikes or spread anomalies right now.”
Technical details
Endpoint
GEThttps://x402.edge402.xyz/edge/liquidity-shiftsWhen to prefer
Use this endpoint when you need real-time statistical anomaly detection on Polymarket specifically — particularly for liquidity, volume, or spread moves at the 2σ level — or when monitoring Solana DLMM wallet activity of high-win-rate traders. Prefer this over general Polymarket API calls when you want pre-computed z-scores and severity rankings rather than raw market data.
Side effects
- 402 Payment Required — no USDC payment header provided and free tier exhausted (3 calls/day per IP)
- Rate limit exceeded — more than 3 free calls from same IP without payment
- Invalid payment — x402 payment on Base L2 rejected or underfunded
- No alerts returned — no markets exceeded 2σ threshold in the last hour (count: 0)
- Stale data — upstream Polymarket data feed delay causing outdated 'as_of' timestamp
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"max_alerts": "10",
"z_threshold": "2.0",
"min_liquidity": "10000"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"as_of": "2026-06-19T06:01:07Z",
"count": 10,
"alerts": [
{
"url": "https://polymarket.com/event/who-will-announce-presidential-run-before-2027",
"slug": "will-jon-stewart-announce-a-presidential-run-before-2027",
"spread": 0.007,
"best_ask": 0.045,
"best_bid": 0.038,
"category": "volume_spike_up",
"question": "Will Jon Stewart announce a Presidential run before 2027?",
"severity": 135.697,
"market_id": "692282",
"clob_token_ids": [
"40001554280514639575248113942404775300178150008617376574462404952462535321139",
"78871879226029536711385867624064517137924644648619833029530210199379799159903"
],
"samples_in_window": 168,
"spread_change_bps": -32.6,
"liquidity_z_score_1h": 2.148,
"current_liquidity_usd": 12236.1847,
"volume_24h_change_pct": 13569.74,
"current_volume_24h_usd": 382.06
},
{
"url": "https://polymarket.com/event/sc-07-house-election-winner",
"slug": "will-the-democratic-party-win-the-sc-07-house-seat",
"spread": 0.02,
"best_ask": 0.09,
"best_bid": 0.07,
"category": "volume_spike_up",
"question": "Will the Democratic Party win the SC-07 House seat?",
"severity": 128.741,
"market_id": "1284720",
"clob_token_ids": [
"66533200574784349380509162104467040229187348123731676518825142374740016683195",
"21974045169480397897994461463989334445317167933936197745708215237803104432906"
],
"samples_in_window": 168,
"spread_change_bps": -2,
"liquidity_z_score_1h": 1.81,
"current_liquidity_usd": 14008.9404,
"volume_24h_change_pct": 12874.14,
"current_volume_24h_usd": 150
},
{
"url": "https://polymarket.com/event/mn-05-house-election-winner",
"slug": "will-the-democratic-party-win-the-mn-05-house-seat",
"spread": 0.01,
"best_ask": 0.94,
"best_bid": 0.93,
"category": "volume_spike_up",
"question": "Will the Democratic Party win the MN-05 House seat?",
"severity": 74.928,
"market_id": "1283873",
"clob_token_ids": [
"20781040640207419108275494852260640607740976077797936236220411009198028862221",
"23961860519982475034051880266064562162897218555151540222239835200934168383354"
],
"samples_in_window": 168,
"spread_change_bps": 0.5,
"liquidity_z_score_1h": 1.297,
"current_liquidity_usd": 15419.9127,
"volume_24h_change_pct": 7492.83,
"current_volume_24h_usd": 26
},
{
"url": "https://polymarket.com/event/arizona-governor-winner-2026",
"slug": "will-the-republican-win-the-arizona-governor-race-in-2026",
"spread": 0.02,
"best_ask": 0.25,
"best_bid": 0.23,
"category": "volume_spike_up",
"question": "Will the Republicans win the Arizona governor race in 2026?",
"severity": 54.031,
"market_id": "629184",
"clob_token_ids": [
"18859933834391393264997730047904836599784455493762567366530805521273388590339",
"88124433300559247959309048268928728970816174095213461359357515260826164605193"
],
"samples_in_window": 168,
"spread_change_bps": -53.9,
"liquidity_z_score_1h": 0.619,
"current_liquidity_usd": 11390.9819,
"volume_24h_change_pct": 5403.11,
"current_volume_24h_usd": 433.070186
},
{
"url": "https://polymarket.com/event/who-will-announce-presidential-run-before-2027",
"slug": "will-chelsea-clinton-announce-a-presidential-run-before-2027",
"spread": 0.002,
"best_ask": 0.014,
"best_bid": 0.012,
"category": "volume_spike_up",
"question": "Will Chelsea Clinton announce a Presidential run before 2027?",
"severity": 44.506,
"market_id": "692291",
"clob_token_ids": [
"28147986407510792113365391193428968075302360378201971341665736876627210040909",
"55399302404177174090572731897104437483011711635563297285356988498081042797253"
],
"samples_in_window": 168,
"spread_change_bps": -2.3,
"liquidity_z_score_1h": 3.515,
"current_liquidity_usd": 14597.03521,
"volume_24h_change_pct": 4450.61,
"current_volume_24h_usd": 142.848571
},
{
"url": "https://polymarket.com/event/richest-person-on-december-31-2026",
"slug": "will-warren-buffett-be-richest-person-on-december-31-579",
"spread": 0.002,
"best_ask": 0.014,
"best_bid": 0.012,
"category": "volume_spike_up",
"question": "Will Warren Buffett be richest person on December 31?",
"severity": 40.328,
"market_id": "676943",
"clob_token_ids": [
"115055397260683461892027718934804755177371613204852263881954807501570063206911",
"104749853918751139046297459169776190810156202328924175275885144881960433094058"
],
"samples_in_window": 168,
"spread_change_bps": -0.5,
"liquidity_z_score_1h": 0.513,
"current_liquidity_usd": 11479.00903,
"volume_24h_change_pct": 4032.76,
"current_volume_24h_usd": 142.848571
},
{
"url": "https://polymarket.com/event/2026-mens-wimbledon-winner",
"slug": "will-sebastian-korda-be-the-2026-mens-wimbledon-winner",
"spread": 0.001,
"best_ask": 0.001,
"best_bid": 0,
"category": "volume_spike_up",
"question": "Will Sebastian Korda be the 2026 Men’s Wimbledon winner?",
"severity": 35.807,
"market_id": "1087908",
"clob_token_ids": [
"46475648948269103513191948998916264992816066457627260304347234221570036651720",
"692397941123748296546343124337676721076750529977381654707815474689353904911"
],
"samples_in_window": 168,
"spread_change_bps": 0,
"liquidity_z_score_1h": 0.814,
"current_liquidity_usd": 43064.70485,
"volume_24h_change_pct": 3580.68,
"current_volume_24h_usd": 22922.550000000003
},
{
"url": "https://polymarket.com/event/anthony-albanese-out-as-prime-minister-of-australia-by",
"slug": "anthony-albanese-out-as-prime-minister-of-australia-by-june-30-2026",
"spread": 0.025,
"best_ask": 0.048,
"best_bid": 0.023,
"category": "volume_spike_up",
"question": "Anthony Albanese out as Prime Minister of Australia by June 30, 2026?",
"severity": 35.785,
"market_id": "1219942",
"clob_token_ids": [
"107367552319182667076918123529835512301963822028781657102322664093024927372582",
"100521556570482127641735660129325049026705022430879161899012394629392158410668"
],
"samples_in_window": 168,
"spread_change_bps": -11.8,
"liquidity_z_score_1h": 8.422,
"current_liquidity_usd": 12844.0323,
"volume_24h_change_pct": 3578.5,
"current_volume_24h_usd": 10.24
},
{
"url": "https://polymarket.com/event/who-will-announce-presidential-run-before-2027",
"slug": "will-lebron-james-announce-a-presidential-run-before-2027",
"spread": 0.003,
"best_ask": 0.016,
"best_bid": 0.013,
"category": "volume_spike_up",
"question": "Will LeBron James announce a Presidential run before 2027?",
"severity": 35.1,
"market_id": "692288",
"clob_token_ids": [
"3583984307549135608982800881180654331530073284398689309975040632637049515529",
"107634195765329584715848093062412776982677725890533967903606925674962268280924"
],
"samples_in_window": 168,
"spread_change_bps": -51.2,
"liquidity_z_score_1h": 2.696,
"current_liquidity_usd": 14714.97536,
"volume_24h_change_pct": 3509.99,
"current_volume_24h_usd": 111.105554
},
{
"url": "https://polymarket.com/event/pa-04-house-election-winner",
"slug": "will-the-democratic-party-win-the-pa-04-house-seat",
"spread": 0.01,
"best_ask": 0.95,
"best_bid": 0.94,
"category": "volume_spike_up",
"question": "Will the Democratic Party win the PA-04 House seat?",
"severity": 33.534,
"market_id": "1284576",
"clob_token_ids": [
"45016212564278950396482368180977199049829776570377366771879459820318001214835",
"59906651547894742089517549044347575375710797987634788303168204873105775827604"
],
"samples_in_window": 168,
"spread_change_bps": -0.3,
"liquidity_z_score_1h": 6.085,
"current_liquidity_usd": 27904.1465,
"volume_24h_change_pct": 3353.44,
"current_volume_24h_usd": 1495.1
}
],
"window": "1h",
"z_threshold": 2,
"min_liquidity": 10000
}Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-06-14T18:00:00Z",
"count": 1,
"alerts": [
{
"slug": "example",
"spread": 0.002,
"category": "volume_spike_up",
"question": "Example market?",
"severity": 99.5,
"market_id": "631149",
"liquidity_z_score_1h": -2.5,
"current_liquidity_usd": 234773.56,
"current_volume_24h_usd": 102000
}
],
"window": "1h",
"z_threshold": 2,
"min_liquidity": 10000
}
}Tags
x402
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