Ranked Polymarket market-flow screener with factual concentration and liquidity-
Ranked Polymarket market-flow screener with factual concentration and liquidity-compatibility fields for the observed window. BEFORE YOU PAY: free substitute https://dash.polym.uk/markets.json. THIS ADDS: Little today, and we would rather you knew: the free snapshot has every field this route returns, for the whole decomposed set instead of the 40 rows this caps at, and it also carries the dominant-flow wallet that this route omits. Buy only if a small fixed-shape response beats completeness.
Not tested: has real-world effectsour last check, 2026-09-24
0 of 0checks answered this week
n/amedian answer time
$0.05listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.polym.uk/screener
| Category | Market data |
|---|---|
| Provider host | api.polym.uk |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 7 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"top": 20
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"top": {
"default": 20,
"maximum": 40,
"minimum": 1,
"type": "integer"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"asOf": {
"format": "date-time",
"type": "string"
},
"caveats": {
"items": {
"type": "string"
},
"type": "array"
},
"decomposed": {
"minimum": 0,
"type": "integer"
},
"markets": {
"items": {
"additionalProperties": false,
"properties": {
"apparentVolumeUsd": {
"description": "Observed taker-side volume in the materialized window, in USD.",
"minimum": 0,
"type": "number"
},
"apparentVsBookFlag": {
"description": "Whether observed volume is structurally inconsistent with available book liquidity.",
"type": [
"boolean",
"null"
]
},
"bucket": {
"description": "Descriptive taker-flow structure bucket, not a fraud verdict.",
"enum": [
"unranked",
"structurally-thin",
"concentrated",
"moderate",
"broad"
],
"type": "string"
},
"conditionId": {
"description": "Polymarket condition ID.",
"pattern": "^0x[0-9a-fA-F]{64}$",
"type": "string"
},
"effectiveTraders": {
"description": "HHI-derived effective trader count for the observed taker flow.",
"minimum": 0,
"type": "integer"
},
"marketClosed": {
"description": "Whether the market was closed in the artifact.",
"type": [
"boolean",
"null"
]
},
"resolution": {
"additionalProperties": false,
"properties": {
"category": {
"description": "Heuristic category inferred from the market title.",
"type": "string"
},
"categoryDisputeRatePct": {
"maximum": 100,
"minimum": 0,
"type": [
"number",
"null"
]
},
"categoryFlipRatePct": {
"maximum": 100,
"minimum": 0,
"type": [
"number",
"null"
]
},
"titleLooksUncheckable": {
"description": "True when the market TITLE states no checkable threshold (price, number, score, head-to-head). Read from the title only \u2014 the resolution rules are not read.",
"type": "boolean"
}
},
"required": [
"category",
"categoryDisputeRatePct",
"categoryFlipRatePct",
"titleLooksUncheckable"
],
"type": [
"object",
"null"
]
},
"title": {
"description": "Observed Polymarket market title.",
"type": "string"
},
"topTraderShare": {
"description": "Share of observed taker volume attributed to the top trader.",
"maximum": 1,
"minimum": 0,
"type": "number"
}
},
"required": [
"conditionId",
"title",
"bucket",
"apparentVolumeUsd",
"topTraderShare",
"effectiveTraders",
"apparentVsBookFlag",
"marketClosed",
"resolution"
],
"type": "object"
},
"type": "array"
},
"observedMarkets": {
"minimum": 0,
"type": "integer"
},
"windowHours": {
"minimum": 0,
"type": "number"
}
},
"required": [
"asOf",
"windowHours",
"observedMarkets",
"decomposed",
"markets",
"caveats"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"requ